JOINT STOCK COMPANY

UKRGIDROPROJECT

STATE LICENSE FIRE SAFETY - Series АВ № 548354 dated 26.08.2010 time period is not limited

JOINT STOCK COMPANY «UKRGIDROENERGO»

DNIESTER PSPP

REGULATIONS TO OPERATE WATER RESERVOIRS OF THE HPP AND PSPP CASCADE WITH BUFFER STORAGE RESERVOIR NORMAL HEADWATER LEVEL 77.10 М (in English)

732-39-Т48

2017

ПРОЕКТНО-ІНЖИНІРИНГОВИЙ КОМПЛЕКС "ГРАНТ" ТОВ "ГІДРОТЕХПРОЕКТ" ПАТ "УКРГІДРОПРОЕКТ" ТОВ "УКРАТОМЕНЕРГОПРОЕКТ" ТОВ "МІЖFROMОМЧИЙ ЦЕНТР ІНЖЕНЕРНИХ TOСЛІДЖЕНЬ"

9, Prospect Nauki, 61166, ISO 9001:2015 JOINT STOCK COMPANY Kharkiv, Certificate Phone: +38(057) 7-175-705 № UA 227880/1 UKRGIDROPROJECT Fax: +38(057) 7-194-730

E-mail – [email protected] STATEhttp LICENSE– www.uhp.kharkov.ua FIRE SAFETY - Series АВ № 548354 dated 26.08.2010 time period is not limited

JOINT STOCK COMPANY «UKRGIDROENERGO»

DNIESTER PSPP

ДНЕСТРОВСКАЯ ГАЭС

REGULATIONS TO OPERATE WATER RESERVOIRS OF THE HPP AND PSPP DNIESTER CASCADE WITH BUFFER STORAGE RESERVOIR NORMAL HEADWATER LEVEL 77.10 М (IN ENGLISH)

732-39-Т48

Technical director Vic.V. Galat

Project Chief Engineer V.Ya.Krainik

Head of the Sector of Hydraulic Engineering and Justifying Calculations at Hydro-Technical Department A.M.Zhakun

2017

2

TABLE OF CONTENTS Terms and definitions…………………………………………………………………………..3 Introduction ...... 8 1 General...... 7 2 Water enginnering condititions in the Dniester river basin ...... 8 2.1 Characterization of the natural conditions ...... 8 2.3 Use of the Dniester river water resources ...... 13 3 Dniester cascade reservoirs operating regimes ...... 16 3.1 General requirements ...... 16 3.2 Operting regime during summer-autumn period (June - November) ...... 17 3.2.1 The Dniester reservoir ...... 17 3.2.2 PSPP downstream (buffer) and upstream reservoirs ...... 19 3.3 Operating regime in winter period (December - February) ...... 20 3.3.1 The Dniester reservoir ...... 20 3.3.2 PSPP reservoirs ...... 21 3.4 Sequence of high waters and spring floods routing through the Dniester hydro-system ...... 22 3.4.1 Conditions of floods formation and potential for their regulation...... 22 3.4.2 PSPP operating mode during high waters routing ...... 26 4 Basic information about hydro-technical facilities ...... 28 4.1 List of the facilities and specifications overview ...... 28 4.1.1 The Dniester hydro-system ...... 28 4.1.2 The Dniester PSPP ...... 30 4.1.3 Specifications of the protective facilities ...... 32 4.2 Operation of the hydro-technical facilities ...... 35 4.2.1 The Dniester HPP-1 facilities ...... 35 4.2.2 The Dniester PSPP water reservoirs and hydro-technical facilities operation ...... 36 5 Hydro-meteorological support and account of the reservoirs’ water resources utilization ...... 39 5.1 Observations over the reservoirs’ hydro-meteorological mode and account of the Dniester river flow ...... 39 5.2 Provision of current hydro-meteorological information, hydrological and specialized fore- casts to the reservoirs’ operating department ...... 48 5.3 Procedure to notify about the water regime, ice conditions and the water quality ...... 50 5.4 Arranging and implementing measures to account usage of the reservoirs water resources ...... 50 6 The Dniester reservoir operation service ...... 53 6.1 Organization of the water reservoir operation service...... 53 6.1.1 Organization of the operation service ...... 53 6.1.2 Objectives of the operation service ...... 53 7 Environmental requirements ...... 54 7.1 Key requirements ...... 54 7.2 Water protective areas ...... 54 7.3 Procedure of operating a sanitary protective zone ...... Error! Bookmark not defined. 7.4 Fish industry ...... Error! Bookmark not defined.

Погоджено:Согласовано:

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ИзмЗм. ККол.ілк ЛистАрк. №toк ПодписьПідпис Дата . 732-39-ТТ3148 Разработалмм. Иваночко Разработал Шевченко СтадияСтадія АркушЛист АркушівЛистов РозробивПроверил НічипарковаБугаковао Правила експлуатації воtoсховищ 1 105 Временные правила Р 1 66 Перевірив Бугакова Дністровського каскаду HPP і PSPP Глав. спец. Татаринцев приэксплуатации НПР 77,10 во мto буферногохранилищ Гол.спец. Татаринцев Днестровской ГАЭС в составе ПАТ «УКРГІДРОПРОЕКТ» воtoсховища (на українській та ПАО «УКРГИДРОПРОЕКТ» Гол.спецГлав. спец.. МарцинкевичШурло гидроагрегатовросійській №1 мовах)и №2 при НПУ м. Харків 2017 р. Н.Глав. контр. спец . БугаковаШурло верхнего воtoёма 229,500 м г. Харьков 2013 г. Н. контр. Бугакова 2

Annex А (for reference) Statute on Interdepartmental Commission for agreeing operating conditions of the Dnieper and Dniester water reservoirs………………………………………72 Annex Б (for reference) Contour map of the Dniester river basin ...... 66 Annex В (for reference) Characteristics of the natural runoff of the Dniester and its tributaries ..... 67 Annex Г (for reference) Diagram of the Dniester system of HPP and PSPP ...... Error! Bookmark not defined. Annex Д (for reference) Curves of the Dniester reservoir storage capacity ...... Error! Bookmark not defined. Annex Е (for reference) Curves of storage capacity and surface area of the downstream (buffer) reservoir of the Dniester PSP ...... Error! Bookmark not defined. Annex Ж (for reference) Curves of storage capacity and surface area of the headwater pond of the Dniester PSPP ...... 78 Annex К (for reference) Operational performance of hydro-turbine units at the Dniester HPP- 1 ...... Error! Bookmark not defined. Annex Л (for reference) Operational performance of hydroturbine units at the Dniester HPP- 2 ...... 80 Annex М (for reference) Operational performance of turbine pump of the Dniester PSPP ...... 81 Annex Н (for reference) Characteristics of operating conditions of the Dniester PSPP during the period of summer and autumn at average daily release of 108 m3/s, 213 m3/s, 281 m3/s ...... Error! Bookmark not defined. Annex П (for reference) Water energy indicators of the Dniester PSPP when operating during the period of summer and autumn, at average daily release of 108 m3/s, 213 m3/s, 281 m3/s ...... Error! Bookmark not defined. Annex Р (for reference) Characteristics of operating conditions of the Dniester PSPP during winter period, at average daily release of 115 and 180 m3/s ...... 86 Annex С (for reference) Water energy indicators of the Dniester PSPP during winter operation, at release of 115 and 180 m3/s ...... Error! Bookmark not defined. Annex Т (for reference) Discharge capacity curves of the Dniester hydro-system facilities ...... Error! Bookmark not defined. Annex У (for reference) Discharge curves for the Dniester hydro-system downstream race Annex Ф (for reference) Estimate rainfall flood profiles of the river Dniester at water level gauge ...... Error! Bookmark not defined. Annex Х (for reference) Curves of the Dniester reservoir free surface at the time of floods with various frequency. Free surface curves’ coordinates ...... Error! Bookmark not defined. Annex Ц (for reference) Diagrams of various frequency flood routing with considering Zalishchyky station forecast ...... Error! Bookmark not defined. Annex Ш (for reference) Curve of the buffer hydro-system discharge capacity ...... Error! Bookmark not defined. Annex Щ (for reference) Curve of the buffer hydro-system downstream race discharge ...... Error! Bookmark not defined. Annex Ю (for reference) The Dniester PSPP water energy indicators during floods of 1-10% frequency ...... Error! Bookmark not defined. Annex Я (for reference) Curves of the buffer reservoir free surface during floods with various frequency. Free surface curves’ coordinates ...... Error! Bookmark not defined. Annex F (for reference) Location diagram of the Dniester PSPP downstream (buffer) reservoir’s bank protection structures...... Error! Bookmark not defined. Annex G (recommended) Standard hydro-meteorological observations and works at the hydro-meteorological network of the Dniester and the buffer reservoirs ...... Error! Bookmark not defined. Annex L (additional Dangerous marks and consequences of water effect in the area downstream of the Dniester HPPP -1 (according to actual archive information) ...... Error! Bookmark not defined. Revision table ...... Error! Bookmark not defined.

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TERMS AND DEFINITIONS Water catchment area – part of the earth surface and soil formations, from which water flows into streams or water reservoirs; River basin management principle – integrated water resources management within the limits of a river basin area; Water-race – part of a river located downstream or upstream of a water-retaining structure (a dam) Water use – the process of abstracting water to be used in production with the purpose of making products and for satisfying the population’s domestic or drinking needs; or without water abstraction when water is used for the needs of hydro-power generation, fishing, water and air transport and other needs; Withdrawal of water living resources — withdrawal, extraction, collection of water living resources from the natural environment. Water runoff – average water discharge rate in cubic meters per second. Drainage water – water that got filtered from a specific territory and is removed with the help of drainage system to reduce the level of ground water; Return water – water which is returned with the help of technical constructions and means from economic water circulation sequence into its natural circulation sequence in the form of ef- fluents, shaft water, quarry water or drainage water; Waters – all types of waters (surface, ground and marine waters), which are integral to the natural links of water circulation; Ground water – water which is located in the subsurface layers of the upper crust rocks in all physical states; Surface water – water from different water bodies located on the earth surface; Water body – natural or artificial environment element in which water is concentrated (sea, river, lake, water reservoir, pond, canal, aquifer). Water resources – volumes of surface, ground and marine waters on a corresponding territory; Water content – characteristics of the river flow volume during a specific time span relatively to its average multi-year value; Water-resources region – part of the river basin, for which water-balance is developed; limits for water abstraction from a water body are determined; as well as other parameters of wa- ter body utilization (water use) are calculated; Aquicultural zoning – distribution of hydrographic units by water-resources regions, done to develop water-balances; Water-balance – ratio between the available for use water resources on a specific territory and the needs in the water resources in the boundaries of a specific territory during a specific time frame; Water systems – systems of interconnected water bodies and hydro-technical structures de- signed to manage water resources; Water intake facility – a structure or a device to intake water from a water body; Water reservoir – drainless or slow-drain surface water body;

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Water utilization – utilization of water (water bodies) to satisfy the needs of population, industry, agriculture, transport and other economic branches including also the right to abstract water, discharge waste water together with other types of water use (water bodies’ use). Water reservoir – artificial reservoir of more than 1 mln. cubic meters capacity built to en- sure water reserve and to regulate its runoff; Multipurpose reservoir – reservoir which according to its technical data sheet is used for two and more purposes (excluding recreational purpose); Hydraulic works (HW - ГТС) – the facilities created to use kinetic energy of hydro- electric power plants (HPP), to cool down technological processes, ensure melioration, protect riverside territories (dams), abstract water for water supply and irrigation, protect fish, regulate water level, ensure performance of sea and river ports, ensure navigation (sluices). Maximum allowable concentration (MAC - ГДК) of matters in water – determined level of matters concentration in water; if that level is excessive, the water is considered unfit for specific purposes of water use. Range of capacities — difference between maximum and minimum possible loading of the power engineering equipment. Daily regulation – increasing water runoff through a hydro-system in the periods of the power engineering facilities maximum load, and decreasing or stopping water runoff in the periods of the power engineering facilities minimum load during a day. Daily water level fluctuations — difference between maximum and minimum water levels during a day. Water abstraction — removal of water from a water body to use it with the help of technical appliances or without them. Water pollution – incoming of pollutants into water bodies. Pollutant – substance that is introduced into a water body due to human economic performance. Closed water body – natural or artificial water reservoir not connected with other water bodies (excluding aquifers); Floodland – riverside territory that can be flooded or water-logged during flood (high wa- ter); Water pollution – introducing foreign objects and materials into water bodies that can harmfully influence the water condition; Navigation facilities (NF - ЗНС) — system of riverside and floating markers of the navi- gation condition that determine direction and edges of fairways and ensure navigation security. Water body category – classification of surface water bodies by categories of water use: economic purposes, drinking, cultural purposes, domestic needs and fishery purposes. Low water – period (phase) of a water body hydrologic regime, when its water content decreases, which entails deterioration of the conditions to satisfy the needs in water resources. Dry season (runoff low period) – period of an annual cycle during which low water con- tent is observed; Spawning period — period of fish and other hydro-bionts’ reproduction (breeding). Spawning sites – water bodies’ sites, where breeding of fish and other water living re- sources occurs.

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Normal headwater level (NHL - НПР) – the highest headwater level, which could be maintained in normal conditions of water reservoirs operation. Peak loads of power systems – maximum daily loads of power systems in the periods of electric power maximum consumption. River basin region – the main unit of management in the sphere of water use and conser- vation as well as in water resources recovery, which includes a river basin (neighboring river basins) and connected with them riverside and ground waters; Fishing — activities connected with extraction of water living resources from natural en- vironment. River basin (watershed) – part of the earth surface and soil formations, from which water gradually flows through the connected water reservoirs and water streams into sea, lake or estu- ary; Fish industry — economic branch with the task to study, conserve, reproduce and utilize in the scientific frames water living resources with the purpose to produce different types of food, technical, medical and other products as well as to create conditions for satisfying materi- al, recreational and health improvement needs of the population. Dead storage level (DSL - РМО) – minimum allowable level of water reservoir opera- tion. Minimum navigational level (MNL - РНС) — minimum allowable design level for navigation in a water reservoir. Pond – artificial water reservoir of not more than 1 mln. cubic meters capacity; Sustainable utilization of water reservoirs’ water and other resources — the way to use resources, which ensures their conservative, integrated, environmentally balanced utilization that does not exceed ecosystems’ recovery capacity and create conditions for long-term resources utilization without decreasing the utilization intensity. Hydro system shipping lock – hydro-technical facility designed for ships passing through a hydro system. Arrangement of water utilization and conservation as well as water resources recovery – pre-project document that determines the main aquacultural and other actions to be performed for satisfying the prospective water needs of the population and industry as well as for water conservation or prevention of water harmful influence; Weekly regulation – increasing water runoff through the hydro system in working days and decreasing or stopping the runoff in weekends and holidays. TSS (ФПР) – top of water reservoir surcharge storage. Water quality – characteristics of water composition and properties that determine its us- ability for specific utilization purposes.

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INTRODUCTION The given “Regulations to operate water reservoirs of the Dniester Cascade HPP and PSPP” have been prepared in accordance with the Water Code of Ukraine (Articles 76, 77, 78) and Environmental Legislation. The need to develop new Regulations (the latest Regulations were published in 1987) was caused by changes in water engineering situation: - Setting of the Dniester PSPP for which off-stream storage reservoir on the Dniester right bank is used as the upstream reservoir, and the buffer storage reservoir of the Dniester HPP-1 is used as the downstream reservoir; - Change of the design parameters and modification of the buffer reservoir operational mode: NHL = 77.10 m; the regime became dependent not only on the HPP-1 discharge, but also on the PSPP operation, which functions in pumping and turbine modes; - Specification of hydrologic parameters due to the prolongation of the Dniester calcu- lated discharge parameters in years (from 90 years’ period, 1895/96 – 1984/85, to 119 years’ period, 1895/96 – 2013/14); - Accumulation of experience in actual operation of the Dniester reservoir and HPP-1 during 1987 – 2016 period; - Taking into account the modern water engineering and environmental requirements to the operational modes of the Dniester cascade reservoirs. The Regulations were developed on the basis of the approved project materials of JSC “Ukrgidroproject” and subcontracting organizations as well as additional project develop- ments. When developing the Regulations, the following materials were used: 1 Water Code of Ukraine, enacted by Ukrainian Verhovna Rada Resolution dated 06.06.1995 with additions; 2 Regulations to operate the Dniester Multi-purpose Hydro-system. USSR Ministry of Melioration and Water Engineering. Chief Department of water resources multi-purpose use. Moscow, 1987; 3 The Dniester PSPP. Specification of the Project for the 1st stage of PSPP in the com- position of three units, including the measures in enhancing reliability and safety of hydro- technical installations, the main hydro-power equipment and hydro-mechanical equipment. Corrections. Project. Additional facilities and structures. Explanatory note. JSC “Ukrgidro- project”. 732-1-Т29. 2013; 4 Dniester PSPP. Specifications of the project of the PSPP 1st stage in the composition of three units, including the measures in enhancing reliability and safety of hydro-technical installations, the main hydro-power equipment and hydro-mechanical equipment. Corrections. Project. Additional facilities and structures. Explanatory note. JSC “Ukrgidroproject”. 732-1- Т37. 2015. (Annex to 732-1-Т29); 5 Sanitary regulations and standards (SanPIN) 4630-88 “Sanitary regulations and stand- ards to protect surface waters from pollution”; 6 Typical regulations to operate water reservoirs of 10 mln. cubic m3 and more. РД 33- 3.2.08-87; 7 Hydro-power plants’ hydro-technical structures. Operating instruction (Scientific- engineering energy servicing Center, Kyiv, 1999) GKD (ГКД) 34.21.542-93 with additions; 8 Project materials for the Dniester PSPP which are kept in the archive of the JSC “Ukrgidroproject”.

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1 GENERAL 1.1 The given Regulations provide the main principles for expedient operation of the Dnie- ster cascade HPP and PSPP water reservoirs with considering the interests of water users and with adhering to environmental requirements and ensuring trouble-free operation of structures and hydro-systems as well as population safety in the riverside area. 1.2 The Regulations are a normative document mandatory for implementation by all the organizations and agencies that relate to the Dniester cascade HPP and PSPP operation. 1.3 All the other technical documents that frame the reservoirs’ operation mode as well as the work of connected structures in normal operation conditions (working regulations to manage the water mode made up for specific time periods and seasons, schedules of water supply, elec- tric power production, operating instructions for some separate facilities, instructions for high water passage, operational observations, account of water resources, notifications and infor- mation provision, etc.) must be developed in accordance with these Regulations. 1.4 Shift of the head hydro-systems to a special operation mode, not stipulated by the Reg- ulations or which is banned for normal operation conditions, could only be allowed in cases of emergencies, which may threaten safety and preservation of the major facilities and requiring implementation of emergent actions. In such a case the hydro-systems’ operation mode is changed according to the set procedures by the order of the responsible person authorized to op- erate water retaining structures with simultaneous notification of the superior organization, local governance agencies, general designer and other stakeholders. The sequence of notification about emergencies is provided in a separate local instruction. 1.5 The operational modes of the Dniester cascade HPP and PSPP water reservoirs are agreed (per month, in the periods of spring floods, passage of rainfall and snow-rainfall flows, in the periods of dry seasons) with the Interdepartmental Commission at Ukrainian State Water Agency to coordinate operational modes of the Dnipro and Dniester water reservoirs. Annex A contains Provisions of the Interdepartmental Commission operation. 1.6 The given Regulations are compiled for the conditions of the Dniester PSPP seven units operation when the buffer water reservoir NHL is equal to + 77.10 м. The Regulations could be corrected or amended by a General Designer in case the opera- tional conditions of the cascade water reservoirs change or if it would be necessary to follow the orders of new guiding documents issued by the Ministry of Energy and Coal, State Agency of Water Resources, Ministry of Nature and local environmental authorities. 1.7 All organizations and agencies, who are involved into controlling and using the Dnie- ster cascade water reservoirs water resources, are responsible for these Regulations implementa- tion. 1.8 State Ecological Inspection of Ukraine and its local branches exercise control over ad- hering to the Regulations provisions on the local level. State Agency for Water Resources of Ukraine exercises control over adhering to the operational modes of water reservoirs work.

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2 WATER ENGINEERING CONDITIONS IN THE DNIESTER BASIN. GENERAL INFORMATION 2.1 Characterization of the natural conditions 2.1.1 HPP and PSPP Dniester cascade is located in the middle part of the Dniester basin. Annex Б provides a sketch map of the basin. The Dniester catchment area is 72,100 km2, the river length is – 1,362 km. Till the Dniester HPP-1 site the catchment area is 40,500 km2 or 56.2 % of the total area, the river length is 678 km. By alimentation conditions and water regime formation the Dniester basin could be subdi- vided into three sections: - Upper part is located on the north-eastern Carpathian slopes, where right-bank tributary- the river Bystrytsia inflows into the Dniester. Here there is the densest and abound in water net- work, where about half of the river flow is formed; - Middle part is located on the Volyn-Podillya and Bessarabian Plato – before the influx of the river Reut. At this site the basin is divided by numerous low-water tributaries; ground waters play a considerable role in the river alimentation; - The basin lower Black Sea part is characterized by weakly developed river network and unfavorable conditions for land runoff formation. The upper part could be characterized by a big number of floods during a year, which oc- cur due to: - Intensive and very intensive rainfalls, and rain showers during a warm season; - Short-time snow melting in the mountains and rainfalls during winter thaws; - General snow melting in spring time. In the basin middle and lower parts rainfall showers are not so abundant and do not cause intensive flooding in contrast to the Carpathian rivers. 2.1.2 The cascade area climate is moderately continental with relatively cold winter and hot summer. The main climatic elements are presented by the representative meteorological station (the closest one) Novodnistrovsk for the multi-year period of observations (since 1985 till 2014) Average annual air temperature is + 8.8 ºС. Absolute maximum – (+) 37.8 ºС, absolute minimum – (-) 34 ºС. Average date of temperature shift to above 0 ºС in spring – March 6, in autumn – Decem- ber 3. Average number of frost free days -174, min. days number -145, max. days number – 212. Annual atmospheric precipitation on the mentioned territory mainly has a cyclical nature. Average multi-year aggregate precipitation per year is 596 mm, including 435 mm, or 73% occurring in the warm season (April – October). The wettest 2008 witnessed 956 mm precipitation, the driest 1986 – 331 mm. Averagely during multi-years’ observations, the volume of liquid precipitation is 79%, sol- id precipitation - 12% and mixed ones - 9%. Average free-water surface evaporation value is 560 mm per annum, the highest value is – 690mm, the lowest one – 414mm. 2.1.3 The Dniester is the river of mixed snow and rainfall alimentation. Ground waters also play a noticeable role in the land flow formation.

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Water regime is characterize by seasonal and multi-year cycles of the flow fluctuations. The multi-year flow is characterized by the low-water and high-water years’ groupings. Lower than the norm average water discharge was observed during several years in a sequence (3 – 6 years), and above-the-norm water discharge was observed in the period of up to 9 years. Figure 2.1 shows integral and difference integral curves of natural and household runoffs of the Dniester river at the stations near Zalischyky town, Dniester HPP-1 (calculated by the hy- drometric data from the gauging station near Mogyliv-Podilskyi town before HPP-1 commis- sioning; after its commissioning the data were taken from the gauging station near the town Za- lischyky and tributaries that influx into the Dniester water reservoir) and till the Dubosary HPP (using the data of the HPP operating agency) for the period 1895 – 2013. That year flow data were used for water engineering and water power calculations. According to the conducted analysis of the multi-year flow cycle the adopted calculation period for the Dniester reservoir influx could be considered representative. In the multi-year flow there were short low-water periods to be replaced by high-water pe- riods till 1946. 19 years-long phase of the decreased water content (1948 – 1964) at Кaver.=0.80 is balanced by the long-term period of high water content with Кaver.=1.21 (period 1965 - 1981). Moreover, full cycle of multi-year river flow fluctuations was observed to last from 1982 till 2010.

Fig. 2.1 – Chronological presentation of the river Dniester flow Translator’s note: the Ukrainian explanation in the Fig.2.1. top box is given lower in the same sequence Household (observed) water runoff, Qi (town Zalischyky) Annual average influx into the Dniester water reservoir, Qi Difference integral curve, sum (Qi-Qo)+a (town Zalischyky) Difference integral curve of the natural influx into the Dniester reservoir

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Difference integral curve (household water influx into the Dubosary HPP) Integral curve of the influx into the Dniester water reservoir (a sum Q i/a) Linear trend of the household water discharges (town Zalischyky) Linear trend of the influx into the Dniester reservoir Linear trend of the integral curve of the influx into the Dniester reservoir Cyмa = sum Table 2.1 presents calculated values of natural river runoff (average multi-year and of different frequencies) of the Dniester river in the calculated HPP sites and at water resources regions. Table 2.1 – Calculated values of the Dniester river natural runoff at the calculated sites and water resources regions Intermediate in- Intermediate in- flow between flow between Dniester HPP- Dniester HPP-1 Dubosary HPP The Dniester Characteristics Dubosary hydrau- 1 site and Dubosary hy- site mouth lic system Dnie- draulic system ster mouth (HPP) Catchment area, km2 40,500 13,100 53,600 18,500 72,100 2 Average multi-year flow: - Water flow Q, m3/s 278 31,1 309 34,9 344 - Discharge volume W, km3 8.77 0.98 9.75 1.10 10.9 3 Calculated discharge (km3) of the frequency, Р %: - 25 % 10.4 1.17 11.4 0.95 12.7 - 50 % 8.49 0.95 9.50 0.70 10.6 - 75 % 6.82 0.75 7.80 0.50 8.68 - 95 % 4.86 0.53 5.78 0.28 6.41 - 97 % 4.42 0.48 5.33 0.24 5.93 Seasonal Dniester river flow distribution at the Dniester HPP-1 site averagely in the multi- year period is as follows: - Spring time (March – May), when the major flow volume is formed at the expense of snow melting in the mountains – 38 %; - Summer (June – August) – 27 %; - Autumn (September – November) – 19 %; - Winter (December – February) – 16 %. Data about the accepted statistical parameters and calculated values of the maximum water flow and discharge volumes (spring floods and rainfall floods) of the Dniester river at the main hydrometric and calculated sites are presented in the Annex B, Tables В.1-В.2. Calculated values of the Dniester left bank maximum intermediate inflows during spring floods and discharge volumes of the rainfall floods that influx into the Dniester reservoir are pre- sented in the Annex B, Tables В.3-В.4. Calculated values during warm and winter periods of the Dniester river minimum flow (average monthly and average annual water flows) at major discharge sites for the conditions of the water regime, not disturbed by the Dubosary and Dniester reservoirs discharge regulation (in natural conditions) are presented in the Annex B, Table В.5.

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2.2 Dniester cascade HPP and PSPP reservoirs’ performance 2.2.1 Annex Г shows diagram of the Dniester cascade HPPs and PSPPs that include: – Dniester HPP-1 with 702 MW installed capacity having seasonal water reservoir with shifting to multi-year flow regulation (relative live storage 훽 = 0.22); – Buffer hydro-system with the reservoir designed to equalize non-uniform flows passing through the HPP-1 turbines during daily and weekly capacity regulations, and water flows pass- ing through the Dniester PSPP turbines in the generator mode; – HPP-2 at the buffer hydro-system with the installed capacity 40.8 MW, that works in the base-load regime on the equalized flows; – Dniester PSPP located on the buffer reservoir right bank approximately nine kilometers downstream of PSPP-1 site. The acting buffer reservoir is used as the PSPP downstream reser- voir. The upstream PSPP reservoir has been set in the cut-and-fill through diking on the plato lo- cated approximately 150 m higher than the Dniester level. Table 2.2 provides some information about the Dniester cascade facilities. Table 2.2 – Dniester cascade reservoirs performance Reservoirs Performance charac- Dniester PSPP up- teristics Dniester Buffer stream reservoir 1 Name of the regu- r.Dniester r.Dniester Artificial reservoir lated stream 2 Dam site location t.Novodnistrovsk, v.Nagoryany, Mogyiliv- Sokyrianskyi dis- Sokyrianskyi dis- Podilsk district, Vinnytsia trict, ob- trict, Chernivtsi ob- oblast, Ukraine (left last, Ukraine last, Ukraine bank) v.Naslavcha, Oknytskyi district, Moldova (right bank) 3 Reservoir location Khmelnitskyi, Sokyrianskyi district, Sokyrianskyi dis- Chernivtsi, Vinny- , trict, Chernivtsi ob- tsia, ob- Ukraine; Mogyiliv- last, Ukraine lasts, Ukraine Podilsk district, Vinnytsia oblast, Ukraine; Mu- ralovonokurylovetskyi district, Moldova, - tskyi district, Moldova (right bank) 4 Category of im- СС3 СС3 СС3 portance 5 Distance from river 668.4 mouth to hydro- 677.7 657.9 (from the Dniester system, km mouth) 6 Reservoir type Run of the river Run of the river Offstream storage 7 Built by the project JSC JSC JSC “Ukrgidroproject” “Ukrgidroproject” “Ukrgidroproject” 8 Type of flow regu- Seasonal with shift- Weekly and daily Daily lation ing to multi-year

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Reservoirs Performance charac- Dniester PSPP up- teristics Dniester Buffer stream reservoir 9 Reservoir purpose Multi-purpose: Hydro-power generation Hydro-power gener- flood control, hy- (reregulator of HPP-1 ation dro-power genera- discharges and PSPP tion, water supply, downstream reservoir) irrigation 10 Reservoir operates In the Dniester HPP In the Dniester HPP and In the Dniester HPP in a cascade, within a and PSPP cascade PSPP cascade including: and PSPP cascade system or inde- including: - Dniester HPP-1; including: pendently - Dniester HPP-1; - Dniester HPP-2; - Dniester HPP-1; - Dniester HPP-2; - Dniester PSPP - Dniester HPP-2; - Dniester PSPP - Dniester PSPP 11 Commissioning Commissioning of Hydro-units commission- Stagewise filling till year the 1st two units af- ing: first unit – 8.09.1999 the mark 229.5 m – ter the reservoir got October 2013 filled to the level of 95.0 m–Dec. 1981 Commissioning of 2nd hydro-unit – Operation of the 1st the 3rd and 4th units 2 September 2000 hydro-unit in normal at the level of pump mode – since 95.0 m – Oct. –Dec. 01.10.2013; since 1982 24.11.2013 – opera- tion in the custom- ary mode Commissioning of 3rd hydro-unit – Operation of the 2nd the 5th and 6th units 20 Dec. 2002 hydro-unit in normal at the reservoir dead pump mode – since storage level (DSL) 08.09.2014; since =102.5m–Dec. 1983 24.10.2014 – opera- tion in the cus- tomary mode Reservoir filling till 3rd unit–10.06.2016 the level of 114.0 m startup operations – November 1985 completed Reservoir filling till the level of NHL =121.0m – end of 1986 12 Regulations for Operating proce- Provisional operating procedures for upstream operating the reser- dures for the reser- and downstream reservoirs compositional to hy- voirs voirs of the Dniester dro-units №1, №2, №3 at the upstream reservoir multi-purpose hy- NHL +229.500 м dro-system, 1987 13 Hydro-system de- JSC JSC JSC partmental identity "Ukrgidroenergo" "Ukrgidroenergo" "Ukrgidroenergo" 14 In joint or separate use Joint use Joint use Separate use

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2.2.2 Table 2.3 presents the reservoirs main design parameters. Appendices Д, Е, Ж pre- sent volume and surface curves of the Dniester, downstream (buffer) and upstream reservoirs. Table 2.3 – Representative design levels and morphometric specifications of the Dniester cascade HPPs and PSPPs reservoirs Reservoirs Indicator PSPP upstream reser- Dniester Buffer voir 1 Representative water de- sign levels in the reservoir (near the dam), m: - normal headwater level (NHL); 121.0 77.1 229.5 - dead storage level (DSL) 102.5 67.6 215.5 - top of surcharge storage (TSS) at rooting the flood of 0.01% frequency 125.0 82.0 - 2 Static volume, mln.m3: - at TSS; 3227 99.07 - - at NHL; 2657 58.10 41.43 - at DSL; 750 6.50 8.73 - useful (between NHL and DSL) 1907 31.80 32.7 - flood control (between TSS and NHL) 570 - - 3 Surface area, km2: - at NHL; 136 7,30 2.61 - at DSL 67.9 3.35 2.19 4 Length, km 194 19.8 2.90 (along the waterway at NHL = 121.0 m) 5 Average width, m 701 369 900 6 Depth, m: - maximum 54 17.1 29.75 - average 19.5 7.96 15.9

2.3 Use of the Dniester river water resources 2.3.1 The main tasks of the Dniester cascade reservoirs: - Flood control through using flood control facility in the Dniester reservoir; - Power generation at HPP-1, HPP-2 and PSPP; - Ensuring compensational releases for water supply, irrigation and navigation at the Dnie- ster portion from the Dniester hydro-system to its mouth; - Ensuring the cascade’s environment conservation function through increasing the Dnie- ster water content during anomaly dry periods through the flow regulation; - Stable provision of water to the downstream settlements and industries.

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2.3.2 Table 2.4 presents data about irretrievable water consumption it the Dniester river ba- sin accepted in the project of the Dniester multi-purpose hydro-system when selecting reservoirs’ parameters. Table 2.4 – Irretrievable water consumption it the Dniester river basin according to the approved Dniester hydro-system project Volume of water consumption, mln.m3, at the Dniester basin site Downstream of Water consumers Upstream of the the Dniester hy- Totally in the ba- Dniester hydro- dro-system till sin system the mouth Industrial and municipal water sup- ply, including: 400 355 755 - transfer to Lviv city; 182 - 182 - transfer to Odesa city - 214 214 Agricultural water supply 143 167 310 Fisheries 119 167 286 Watering 150 22 172 Irrigation (precipitation frequency Р = 95 %) 49 2765 2814 Sanitary release into the (80 m3/s) - 2520 2520 Total: 861 5996 6857 Evaporation from the Dniester reser- voir 40 - 40 Evaporation from the Dubosary res- ervoir - 29 29 Total with evaporation 901 6025 6926 2.3.3 Design norms of water availability for the consumers (by the number of uninterrupt- ed years) are as follows: - Industrial and municipal water supply 95-97 %; - Sanitary release – 95 %; - Irrigation at: Full irrigation norm – 75 %; 0.8 irrigation norm – 95 %; - Hydro-power engineering – 90 %; - Fish husbandry – 75 %; - River transport – 95 %. 2.3.4 The cascade reservoirs water resources are also used for hydro-power engineering: ensuring power engineering at HPP-1, HPP-2 and PSPP. The Dniester HPP-1 and PSPP when operating within the power grid: - Participate in compensating the peak and half-peak zones of daily loading schedule; - Serve as fast acting emergency, frequency and repair reserves of the power grid. The Dniester HPP-2 operates 24 hours a day ensuring additional power generation. Table 2.5 presents the main parameters of the Dniester cascade HPP-1 and PSPP operation.

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Annex K presents the performance data of the Dniester HPP-1 hydro-units. Annex Л pre- sents performance data of the HPP-2. Annex M presents performance data of the Dniester PSPP pumps-turbines. Table 2.5 – Design parameters of the Dniester HPP-1, HPP-2 and the 1st quetch of PSPP composed of seven units PSPP Indicator HPP-1 HPP-2 turbine mode pump mode 1 Installed capacity, MW 702 40.8 2268 2947 2 Number of hydro-units, pcs. 6 3 7 3 Turbine type ПЛ 60/3160- ПЛ 15/3233- ОРО 170/5217-В-730 В-600 ГК-470 4 Maximum water con- sumption by HPP and PSPP, m3/s 1970 471 1890 1834 5 Average multi-year an- nual power production, mln.KW.year 896 94.5 2720 - 6 Average multi-year an- nual number of hours in using the installed capacity in the turbine mode 1276 2316 1200 -

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3 DNIESTER CASCADE RESERVOIRS’ OPERATING REGIMES 3.1 General requirements 3.1.1 The Dniester cascade reservoirs – the Dniester reservoir, buffer reservoir and up- stream PSPP reservoir, are the water bodies of a single water engineering system of the Dniester basin. The water engineering system is regulated through installing corresponding regimes for each system water body. The operating modes are approved by the Interdisciplinary Commission at the State Water Agency of Ukraine on the basis of the regulations to operate water bodies with taking into ac- count environmental requirements and interests of all the consumers not to forget the forecasts of water influx into the Dniester reservoir. 3.1.2 The Dniester reservoir is the main flow regulator. It ensures seasonal, weekly and daily regulation striving to solve the following tasks: – Control of inundations caused by floods; – Ensure compensatational releases for municipal and industrial water supply, environ- mental irrigation releases, navigation at the downstream Dniester part till the mouth; – Power generation at the HPP-1. According to the Dniester Pumped-Storage Power Plant (PSPP) project, 1984, the mini- mum average daily environmental water release during all seasons should be not less than 100 m3 /s. This value had been substantiated by the necessary sanitary river conditions in the water abstraction points used for drinking purposes and for food processing industry needs, as well as by the need to keep the corresponding depth for navigation purposes and for ships standing dur- ing repair period over winter time. Maximum average-daily compensational water release should not exceed 1000 m3 /s to avoid flooding in the tail race excluding the periods of flooding. 3.1.3 Buffer water reservoir is designed to equalize the unequal flows incoming from the Dniester reservoir during daily and weekly regulation of HPP-1 capacity. Simultaneously it serves as PSPP downstream reservoir. Equalizing of flows occurs through reregulation in the buffer reservoir, which is filled dur- ing the turbine operational mode of HPP-1 and PSPP and emptied during the rest part of the day ensuring uniform release into the downstream race. 3.1.4 Upstream PSPP has a power engineering purpose. It is used as an accumulating res- ervoir, which is filled during PSPP work in the pumping mode and emptied during the turbine operating mode. The PSPP operating mode is determined according to the power grid require- ments. 3.1.5 Operating modes of the Dniester cascade reservoirs are interconnected and depend on the value of the compensating release from the Dniester reservoir into the downstream Dniester site. Volumes and schedules of the compensating releases are set by the Interdisciplinary Com- mission depending on the water engineering situation, hydrologic and environmental conditions in the river basin. Operating modes of HPP-1, HPP-2 and PSPP in the power grid loading schedule are to be determined with account of the Interdisciplinary Commission decisions.

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3.2 Operating regime during summer-autumn period (June-November) 3.2.1 The Dniester reservoir 3.2.1.1 In summer-autumn period the buffer reservoir works in the compensational releases mode which is performed to provide water to downstream Dniester consumers till the mouth. The values of the compensating releases are approved by the Interdisciplinary Commission depending on the inferred water consumption, expected aggregated influx into the Dniester res- ervoir and intermediate inflows volume on the Dniester multi-purpose hydro-system site – the river Dniester mouth. Values of the average monthly summer-autumn compensating releases of different fre- quencies are presented in the lower Table 3.1. The discharge values were obtained due to water- power calculations by multi-year flow indicators for the period since 1895/96 till 2012/13 (118 years) at the water consumption level, accepted in the Dniester hydro-system project (Table 2.4). Table 3.1 – Compensating average monthly releases in summer-autumn (June – Novem- ber) period from the Dniester reservoir. Indicator Value Average monthly compensating discharge, m3/s: – 99 % frequency; 100 – 95 % frequency; 104 – 90 % frequency; 108 – 84 % frequency; 130 – 75 % frequency; 160 – 50 % frequency; 213 – 25 % frequency; 281 – 16 % frequency 344 3.2.1.2 In the water reservoir it is necessary: - Not to allow to have daily water level fluctuations more than 20-15 cm after emergence of spawning temperature exceeding 12 0С, especially in environmentally vulnerable zones of the reservoir head, where the main spawning grounds are located; - To perform summer reservoir emptying lower than NHL by 1 – 2 m to ensure banks ramping. 3.2.1.3 The Dniester reservoir operating mode and water supply to the consumers are framed by the reservoir operating curves presented in the Figure 3.1. The curves were prepared according to the irretrievable water consumption principle for which the Dniester multi-purpose hydro-system was designed (Table 2.4).

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Figure 3.1 – Dniester reservoir operating curves When determining the discharge to the hydro-system downstream race it is necessary to account intermediate inflows volume on the river reach the Dniester multi-purpose hydro-system – the river Dniester mouth. 3.2.1.4 At the Dniester reservoir levels in the zone of the guaranteed yield of the operating curves (zone III) the compensating release is initiated in the volume that ensures irretrievable water consumption, which is presented in the Table 2.4. 3.2.1.5 At the reservoir levels in the zone of the increased yield (zone II) excessive water volumes could be used in accordance with the water engineering conditions: - For water discharge increase during low streamflow periods. Emptying of the excessive water (higher than the upper limit of the guaranteed yield) could be initiated immediately upon low streamflow period occurrence, or during some part of the low streamflow period, or during the whole low streamflow period; - Excessive water volumes may not be used to increase water yield. In such a case water consumers receive only guaranteed yield and excessive inflow goes to fill the reservoir up to NHL = 121.0 м.

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In each of the mentioned regime options 95 % of the guaranteed yield is preserved. 3.2.1.6 At the levels of the reservoir in the zone of the decreased yield (zone IV) it is expe- dient to shift to limited yield to prevent early emptying to the level of DSL =102.5 m and proba- ble occurrence of a serious disruption. 3.2.1.7 In the zone I between the marks TSS = 125.0 m and NHL = 121.0 m there is a flood control capacity which in the period between floods should always be empty and ready to receive a flood flow. 3.2.2 PSPP downstream (buffer) and upstream water reservoirs During summer-autumn period the buffer reservoir operates in the compensatation releases mode, which is implemented to provide water consumers with water at the Dniester reach, locat- ed downstream of the buffer reservoir dam and stretching to the mouth. The volumes of the compensating releases are approved by the Interdisciplinary commis- sion depending on the determined water consumption, expected aggregate inflow into the Dnie- ster reservoir and intermediate inflow volume at the Dniester multi-purpose hydro-system site– the river Dniester mouth. Table 3.1 presents values of the average monthly summer-autumn compensating releases of different frequencies. Appendix H presents characteristics of the operating modes of the PSPP upstream and downstream reservoirs in the conditions of 50 % frequency compensating releases occurrence, which is 213 m3/s, as well as releases of 90 and 25 % frequencies. These characteristics are pre- sented as an example and they correspond to one of the many modes, which could be employed during HPP-1, HPP-2, PSPP operation during summer-autumn period. In the mentioned examples it was accepted: – HPP-1 and PSPP operate in the peak zone of the daily load schedule: HPP-1 during 6 hours, PSPP – depending on the volume of the pumped water; – HPP-2 operates 24 hours on the equalized flows 108; 213; 281 m3/s, with the frequencies 90; 50; 25 % accordingly. Diurnal buffer reservoir water balance is characterized by the following features. During PSPP operation in the pump mode the buffer reservoir gets empty due to water pumping into the PSPP upstream reservoir and discharge of average-daily release through the HPP-2 turbines. After pumping is executed, before HPP-1 and PSPP operation starts in the turbine mode, buffer reservoir continues to be emptied at the expense of discharging the average daily flow through the HPP-2 turbines. When HPP-1 and PSPP operate in the turbine mode, together with simultaneous release through HPP-2 average daily flow, buffer reservoir is filled up to the mark NHL = 77.1 m. Annex П presents PSPP parameters when operating in summer-autumn period in the con- ditions of the above mentioned releases.

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3.3 Operating regime in winter period (December - February) 3.3.1 Dniester reservoir 3.3.1.1 In winter period the Dniester reservoir operates in power engineering mode. To en- sure HPP-1 designed guaranteed 47.6 MW capacity of 90% frequency it is necessary to have 115 – 180 m3 /s discharge depending on the Dniester reservoir storage. 3.3.1.2 Normal pre-flood reservoir emptying is 114.7 m. If necessary, emptying below that level could be executed even down to DSL 102.5 m, if the following situations occur: - To maintain guaranteed capacity in winter low water period; - During preparation for spring floods routing, the forecasted volume of which is consider- ably higher than the norm; - During emergencies in the power grid on the condition that snow water stocks in the Dniester basin are not lower than the norm. Restriction of the reservoir emptying higher than 114.7 m is allowed only during low water flood when the snow stocks in the Dniester basin are considerably lower than the norm. When the Dniester reservoir is emptied lower than 114.7 m level BS (Baltic system), it is necessary to take into account minimum levels of water intakes in Kamianets-Podilskyi city of Khmelintskiy oblast (108.65 m BS) and Khotin city of Chernivtsy oblast (111.0 m BS). The decision to undertake pre-flood emptying is coordinated by the Interdisciplinary com- mission and approved by the State Water Agency. 3.3.1.3 The guaranteed average winter HPP-1 capacity and the level of safe annual pre- flood Dniester reservoir emptying depend on the value of irretrievable water consumption in the Dniester basin. 3.3.1.4 When the reservoir level is in the zone of the guaranteed yield (zone III) of the Dniester reservoir operating curves, the HPP-1 operates with the guaranteed capacity. 3.3.1.5 When the reservoir levels are in the zone of excessive yield (zone II), the excessive water over the upper line of the guaranteed yield zone is used according to the needs of the pow- er system. 3.3.1.6 When the reservoir level is in the zone IV, HPP-1 capacity should be reduced by 20%, and if it is in the zone VI – it should be decreased by 40 % of the guaranteed capacity. 3.3.1.7 In power grid emergency situations requiring increase of power yield from the Dniester HPP-1, the reservoir emptying is allowed within all the zones of the operating curves. The spent water stock should be restored in the shortest possible time through decreasing power generation after the emergency is dealt with. 3.3.1.8 Intensity of the reservoir winter emptying during ice drift should not exceed 10 cm per day. After the reservoir is free from ice, water level fluctuations near the HPP-1 dam are al- lowed in the range of up to 50 cm per day.

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3.3.2 PSPP water reservoirs In winter period during a work week the release mode of the buffer reservoir – PSPP downstream reservoir – is set according to the calculations depending on the Dniester reservoir operating mode. In such a period the Dniester reservoir operates in the power engineering mode. To ensure HPP-1 47.6 MW designed capacity of 90% frequency it is necessary to have average daily dis- charge of 115 – 180 m3/s depending on the Dniester reservoir storage. Annex P presents characteristics of the Dniester PSPP upstream and downstream reservoirs during joint operation of HPP-1, HPP-2 and PSPP which are essential for the operating condi- tions of the HPP-1 at these average daily discharge rates. These characteristics are given for an example and correspond to one of the possible modes, which could be employed in the process of PSPP operation in the composition of seven hydro-units in winter period. The mentioned example has the following admissions: – HPP-1 and PSPP operate in the peak zone of the daily load schedule: HPP-1 – during 6 hours; PSPP – depending on the volume of the pumped water; – HPP-2 operates in the equalized discharges 115 and 180 m3/с. Average daily buffer reservoir water balance has the following characteristics. During PSPP operation in the pumping mode buffer reservoir is emptied at the expense of water pumping into the PSPP upstream reservoir and discharging average daily flow volume though HPP-2 turbines. When HPP-1 and PSPP operate in a turbine mode with simultaneous rerelease of average daily flow volume through HPP-2, the buffer reservoir got filled up to level of NHL = 77.1 m. Annex C presents water-power indicators of PSPP when operating in the above described mode.

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3.4 Sequence of high waters and spring floods routing through the Dniester hydro- system 3.4.1 Conditions of floods formation and potential for their regulation 3.4.1.1 Maximum water discharges in the Dniester are observed annually in the period of spring floods during formation of thawed snow and rainfall high waters. Maximum discharges of rainfall high waters are usually bigger than the melted snow dis- charges. The highest maximum for the whole observations period 1881 – 2015 was of the rain- fall origin and was registered at the beginning of September 1941 with maximum flow in the gauging station site Zalischyky amounting to 8040 m3/s. Rainfall high waters are characterized by intensive variation of the flow passage. Duration of water rising usually continues for 20 – 30 hours, subsiding lasts longer period of time. In- crease in discharges during water rising may reach 1000 – 1500 m3/s for 12 hours in contrast to the pre-flood discharge of 100 – 200 m3/s. 3.4.1.2 The main zone of rain high waters formation in the Dniester basin is catchment are- as of its right tributaries located on the Carpathian north-eastern slopes (Stryi, Svicha, Lomny- tsia, Bystryitsia). Increased runoff zone stretches almost in parallel to the main river at 70 – 90 km distance from it. Here there is the most intensive runoff with the maximum value of 1% fre- quency 2000 – 3000 l/s·km2. The Dniester head and its right bank tributaries yield nearly 75 – 85 % of the annual flow, which is registered at the Zalischyky gauging station site, and during summer high waters they yield 90 – 95% of the Dniester monthly flow. 3.4.1.3 The Dniester high water cause floods, when partial or full flooding occurs to flood settlements, agricultural lands, roads, communication lines and other facilities. Thanks to the Dniester reservoir setting it became possible to decrease losses from floods through high waters regulation. For this purpose, there is a flood control facility in the reservoir having the storage volume of 570 mln.m3, located in the prism of the top surcharge storage be- tween the marks of NHL = 121.0 m and TSS = 125.0 m (zone I of the reservoir operating curves, Figure 3.1). Water discharge facilities of the Dniester hydro-system are the following: - Water discharge dam with 12 waterways, which is adjacent with the HPP-1; - 6 units of HPP-1. Annex T provides specifications of the Dniester hydro-system throughput capacity. Annex У presents flow curve in the downstream race of the Dniester hydro-system. 3.4.1.4 The main sequence to regulate high waters and spring floods, accepted and ap- proved in the signed project, is the sequence without considering the forecasts, and it guarantees cutting of the maximum high waters flow volumes of 1 – 10 % frequency to 2600 m3/s. This se- quence uses hourly information about the flow volumes at the Zalischyky gauging station site (the main point of water influx into the Dniester reservoir). The flow regulation occurs according the following rules: - If the flow is less or equal to 2600 m3/s, then it is transited to be discharged through the hydro-system, the reservoir water level is kept at the mark not to exceed NHL = 121.0 m; - If the flow exceeds 2600 m3/s and flood control facility is not filled, it is necessary to dis- charge the water incoming at 2600 m3/s and to force the water level in the reservoir to the mark of TSS = 125.0 м; - If the flow-rate is higher than 2600 m3/s and the flood control facility is filled, then all the excessive water volume is discharged through the hydro-system into the downstream race and the water level is kept at the mark of TSS = 125.0 м.

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Annex Ф presents calculated hydrographs of the rainfall precipitation for the Dniester river by the gauging station Zalischyky data. Table 3.2 presents the calculation results of high waters regulation by the sequence without employing forecasts. Table 3.2 – Indicators of different frequency high waters routing through the Dniester hydro-system with regulating the process by the sequence without forecasts consideration

High water frequency, Р % Indicator 0.01 0.1 0.5 1 5 10 20 50 70 1 Maximum flow-rate at the Zalischyky gaug- 13260 8320 6000 5140 3400 2750 2130 1330 1000 ing station data, m3/s 2 Discharge maximum flow rate through the 13260 8320 5550 2600 2600 2600 2130 1330 1000 hydro-system, m3/s 3 Maximum water lev- el in the reservoir (near 125.0 125.0 125.0 125.0 122.0 121.1 121.0 121.0 121.0 the dam), m 4 Decreasing maxi- mum flow-rate (cut- ting) at the expense of regulation,m3/s 0 0 450 2540 800 150 0 0 0 % 0 0 7.5 49.4 30.7 5.5 0 0 0

Table 3.2 data show that when regulating high waters by the scheme without forecasts, maximum flow rates are cut only for the high waters by 0.5 – 10 %, and the high water of 1% frequency is cut most of all – by 2540 m3/s or by 49.4 %. The flow rates of less than 0.5 % frequency are not cut, because the flood control facility got filled during the start of high water incoming. The curves of the free Dniester reservoir surface were prepared by the calculated dis- charged and influx flow rates. Annex X presents those curves and their coordinates. 3.4.1.5 Flood flows of more than 1% frequency are cut a little or don’t get cut at all, and this is a shortcoming of the scheme without forecasts accounting. This shortcoming could be re- moved through using forecasts of water influx into the Dniester reservoir. The scheme of high waters routing with forecasts utilization is executed in the following sequence: - When determining discharge volumes through the Dniester hydro-system it is necessary to be guided by the forecasted discharges at the Zalischyky gauging station site (main influx) and by the forecasted intermediate inflows into the Dniester reservoir expected in 24 hours (i.e., fore- cast for 24 hours); - If the forecasted flow-rate is expected to be less than 1000 m3/s, the water is transited to be discharged into the downstream race; - If the flow-rate is forecasted in the boundaries of 1000 - 4200 m3/s, the discharged vol- umes are determined by the following dependence: 푄𝑖푛푓푙푢푥 − 1000 푄푑𝑖푠푐ℎ. = 1000 + ; 2

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- If the flow-rates are forecasted to exceed 4200 m3/s, the discharged volume is assigned to be equal to 2600 m3/s and is kept during the whole period, until the reservoir water level reaches the mark TSS = 125.0 m. After that the influx volumes arte transited to the downstream race. 3.4.1.6 The hydro-system operating mode in accordance with the above mentioned scheme is assigned and corrected in the process of the forecasts incoming on the basis of operatively done calculations of the Dniester reservoir high waters transformations. 3.4.1.7 After high waters subsiding the facility of for top surcharge storage is emptied and the reservoir water level is drained to the mark NHL = 121.0 м. 3.4.1.8 To check the proposed sequence of high water routing with using forecasts we have performed calculations of the transformations of high waters with 0.01 %; 0.1 %; 0.3 %; 0.5 %; 1 %; 5 %; 10 %; 20 % and 50 % frequencies. The following conditions were ensured: 1 Before the high water period the reservoir is filled up to the NHL = 121.0 м; 2 The 24 hours ahead forecast comes twice a day with 12 hours’ interval and the assigned discharge volume is kept during 12 hours before the next forecast comes; 3 Three variants of forecasts are calculated for each high water period: - The forecast is totally true; - The forecast is 50% higher, i.e., the actual influx in reality is 1.5 times lower than the forecast; - The forecast is 50% lower, i.e., the actual influx is 2 times more than the forecast. 4 High water transformations calculations were performed by the detailed method with ac- counting unstable movement of the flood wave in the reservoir. Check of the output hydraulic and morphometric data accepted in the calculations of the unstable movement of the flood wave in the Dniester reservoir was performed by way of com- paring the calculated and actual levels and flow-rates during the high water passage in July 2008. Annex Ц and Table 3.3 present the results of the calculations. Analysis of the Table 3.3 calculation results testifies that the used schemes of high water routing with account of the forecasts in comparison with the scheme without forecasts (Table 3.2) gives a high cut of the maximum flow-rates when routing the high waters of 0.5 % and more frequencies. High waters of 0.01 and 0.1 % frequencies by both schemes are routed without cutting the maximum flow-rate. The scheme with forecasts should be the principal scheme for high waters routing through the Dniester hydro-system. It is also necessary to account the forecasts by Zalischyky station and intermediate inflows data, but also the by the data from the gauging station Galych. It gives the opportunity to start emptying the reservoir 24 hours earlier to ensure more efficient cutting of the maximum flow-rate.

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Table 3.3 – Results of performing calculations for high waters routing through the Dniester hydro-system by the scheme with forecasts

Max.discharge flow-rate The highest water level in the reser- Max.influx through the hydro-system, Cutting of the high-waters max.flow- voir near the dam, m, at the forecast flow-rate at the m3/s, rate m3/s, at the forecast error Flood frequency error Zalischyky sta- at the forecast error tion site, m3/s +50 % 0 % -50 % +50 % 0% -50% +50 % 0 % -50 % 0 0 0 0.01 % 13260 13260 13260 13260 1250 125.0 125.0 0 0 0 0 0 0 0.1 % 8320 8320 8320 8320 1250 125.0 125.0 0 0 0 3400 3400 3400 0.5 % 6000 2600 2600 2600 1241 124.3 124.75 56,66% 56,66 56,66 2540 2540 2540 1 % 5140 2600 2600 2600 123.05 123.2 123.55 49,4% 49,4% 49,4% 800 1200 1200 5 % 3400 2600 2200 2200 121.25 121.75 122.20 23,5% 35,3% 35,3% 150 875 875 10 % 2750 2600 1875 1875 121.1 121.45 121.90 5,5% 31,8% 31,8% 30 565 565 20 % 2130 2100 1565 1565 121.0 12.,3 121.7 1,41% 26,5% 26,5% 170 165 165 50 % 1330 1500 1165 1165 − 121.0 12.,1 121.45 12,8% 12,4% 12,4%

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3.4.2 PSPP operating mode during high waters routing 3.4.2.1 Maximum high water flow is discharged into the buffer reservoir after its cutting by the Dniester reservoir. In the buffer reservoir those discharged volumes are not considerably transformed due to the reservoir small size and the discharged flow is transited through the buff- er hydro-system. 3.4.2.2 Buffer hydro-system water discharge facilities are as follows: – Water discharge dam with twelve waterways including two of them that are regulated; – Three hydro-units of HPP-2. Table 3.4 and Annex Ш present specifications of the buffer hydro-system throughput ca- pacity. Annex Щ presents flow-rate curve in the buffer hydro-system downstream race. Table 3.4 Throughput capacity of the reservoir buffer hydro-system at the inherent reser- voir water levels Throughput capacity, m3/s Facilities at NHL = 77.1 m at TSS = 82.0 м Water discharge dam 7650 13260 HPP-2 turbines 0 0 Totally for the hydro-system 7650 13260 3.4.2.3 Maximum flow-rate cutting in the Dniester reservoir is performed by the scheme of high waters routing with no account of influx forecast. For this purpose, a flood-control facility of 570 mln.m3 capacity is used, it is located in the prism between the marks NHL=121.0 m and TSS =125.0 m. Table 3.5 presents maximum flood volumes of different frequency incoming into the buff- er reservoir, which are later discharged through the buffer hydro-system, as well as the highest water levels. Table 3.5 – Indicators of high waters routing of different frequencies through the buffer hydro-system in the conditions of operating the Dniester PSPP seven hydro-units. Maximum flow-rate, m3/s Highest level in the Flood frequency buffer reservoir near Influx Discharge the HPP-2 dam, m 0.01 % 13260 13260 82.0 0.1 % 8320 8320 77.8 0.5 % 5550 5550 77.1 1-10 % 2600 2600 77.1 3.4.2.4 The Dniester PSPP having seven units operates without any limitations in the con- ditions, when average daily flow rates passing through the PSPP downstream (buffer) reservoir do not exceed 5700 m3/s. At high waters flow rates exceeding 5700 m3/s PSPP must limit its operation till full shut- down in order not to exceed the mark of NHL = 77.1 m due to the PSPP operation. 3.4.2.5 Annex Ю presents the water engineering indicators of the Dniester PSPP when working during high waters at 1-10 % frequency. 3.4.2.6 Annex Я presents curves of the buffer reservoir free surface during high waters of different frequency as well as their coordinates.

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Morphometric and hydraulic features of the calculated buffer reservoir sites were used as output data in the calculation of those curves. Those features were determined on the basis of the natural lateral profiles coordinates, accepted from the report of “Interdisciplinary center for engi- neer research” (732/МЦІД-2-Т98, 2013 р.).

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4 BASIC INFORMATION ABOUT HYDRO-TECHNICAL FACILITIES 4.1 List of the facilities and specifications overview 4.1.1 Dniester hydro-system 1 The hydro-system includes the following facilities: - Left-bank dam; - Right-bank dam; - HPP building; - Assembly site building; - Abutments, retaining walls, sidewalls; - Take-off channel. 2 Table 4.1 presents overview of hydro-technical facilities specifications

Table 4.1 – Dniester reservoir hydro-technical facilities specifications

Facility Specification Left-bank dam Facility type: earth-and-rock fill dam. Basement soil: sandstone. Dam crest level – 127.0 m (in over-water part). Maximum head – 53 m. Construction height – 59.0 m. Length along the crest – 620 m. Width by the crest – 12.0 m, width by the foot - 300 m. Water repellent and drainage arrangements: cement-grout curtain in the channel part, grout curtain in the left-bank part, pipe drainage in the downstream race. Design of the conjugated buildings: concrete stakes, retaining walls, sidewall. Main design and layout features: central dam core is loam, transitional zones are of sand-gravel mixture, rock toes in downstream and upstream races; soil in the dam body was layered and rolled; cement gallery in the core. Slopes arrangement: upstream slope – 1:1.8; downstream slope – 1:1.7. Type of slopes fixing: rocks, banquettes. Right-bank dam Facility type: earth-and-rock fill dam. Basement soil: argillite, sandstone. Dam crest level – 127.0 m. Maximum head – 41 m. Construction height – 47.5 m. Length along the crest – 270 m. Width by the crest – 24 m, width by the foot – 163 m. Water repellent and drainage arrangements: cement-grout curtain, pipe drainage in the downstream race. Design of the conjugated buildings: concrete stakes, retaining walls, sidewall. Main design and layout features: central dam core is loam, transitional zones are of sand-gravel mixture, rock toes in

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Facility Specification downstream and upstream races; soil in the dam body was layered and rolled; cement gallery in the core. Slopes arrangement: upstream slope – 1:1,8; downstream slope – 1:1,7. Type of slopes fixing: rocks. HPP building Building type: run-of-river, conjugated with overflow spillway. Basement soil: granites. Construction height: 80 m. Length: 75 m (along the flow). Width: 153 m (across the flow). Water repellent and drainage arrangements: double-row cement- grout curtain; drainage relief holes united into the pressure header; system of trays and laid pipes to collect and bypass water which is filtered into the drainage pump station well. Design of the conjugated buildings: concrete stakes, retaining walls Type and number of turbines: ПЛ 60 – В – 600, 6 pcs. Main design and layout features: HPP concrete building is conjugated with the overflow spillway; it has developed partially hollow piers; it is divided by three sections 51 m each; joints between one section units – blind; waterways and suction pipes – with intermediate piers. Spillway crest level: 110.0 m. Number of waterways and their size: 12 waterways; 7.5 m-wide each. Aggregated design water flow through waterways: at NHL – 6800 m3/s; at TSS – 11280 m3/s. Assembly site building Main design and layout features: is made of two sections – head section, with the plan size: 46.3х73.0 m and 57.3 m high; assembly hall section, with plan size 50.0х43.5 m and 29.3 m high. Head section includes: base plate that bears longitudinal and lateral counter-force walls, connected with upstream race with monolithic slabs. In the downstream head section, the premises are located in the assembled concrete accessory building (with window openings). Cement and drainage ring-gallery is located in the head section on the level of 71.2 m. From this gallery double-row cement-grout curtain is arranged (from upstream race side) as well as a number of drainage holes, united by the general pressure header, which drains water in the downstream race. The head section is conjugated with the right-bank dam with the help of right-bank upstream riser and a bulkhead, which penetrates the dam body. Assembly site head section top portion is on the level of 127.0 m. Assembly hall section includes: monolithic foundation plate and assembled frame. Assembly site assembly hall section top portion is on the level of 99.0 m. The assembly site floor is 5 m lower than the site for delivering shipments into the HPP. Assembly hall section is conjugated with the right-bank dam with the help of downstream right bank riser and retaining wall.

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Facility Specification Assembly site drainage: water that drained through head section concrete is collected in drainage pressure header as well as in the drainage gallery, where it comes through a system of pipes and pits, on the level of 71.2 m. Then the water is discharged into the HPP building drainage gallery from where it is pumped into the downstream race with the help of pumps located in the first HPP building section. Abutments, retaining Concrete, angle-type, divided by seams into sections. walls, sidewalls Type of soil – depending on the location of a riser and a wall. Take-off channel The channel axis deflects by 10 о towards the left-bank dam. Average channel length: about 400 m. Width: 170 m (neat the HPP building). Upstream and downstream aprons’ design: upstream apron well that joins the HPP building, has bottom length (in the flow direction) 35 m, bottom level is 54 m. The well frontal wall is inclined till the level of 65 m; at the level of 65.0 m there is a horizontal site of 36.5 m length (downstream apron), which is finished with a baffle wall 3.0 m high. Immediately behind the baffle wall there is a hopper filled with rocks to the level of 65.0 m; the hopper depth relatively to the downstream apron is 7.0 m, width by its bottom – 4.0 m, width by its top – 25 m. Behind the hopper at the level of 68.0 m there is a cleaned to the rock bottom of the take-off channel. Fixing of the upstream and downstream aprons: concrete monolithic plates connected with the rock by the plate anchors 1.5(3.0) m thick. The channel slopes near the HPP are fixed by down sloping wing abutments. Clearly expressed slope is absent beyond the limits of the left-bank riser; the right-bank slope is covered with concrete till the level of 74.5 m at a distance of 300 m from the riser; higher than the berm, the slope is strengthened with rock at the level of 74.5 m. The foundation of the take-off channel bed is composed of sandstones

4.1.2 The Dniester PSPP 1 Dniester PSPP hydro-technical facilities include: – Upstream reservoir; – Water intake facility; – Underwater penstocks; – PSPP building; – Offtake waterways; – Spillway; – Take-out channel. 2 Table 4.2 presents overview of the specifications of the PSPP upstream hydro- technical facilities and water conveyance system. Table 4.2 – Specifications of the Dniester PSPP upstream reservoir and water convey- ance system (as to the project)

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Facility Specifications Upstream reservoir It is set at the cut-and-fill site through arranging a bund with maxi- mum use of dredged useful soil – sand, clay, limestone, loam. Reservoir length - 2900 m, general length of the left-bank and right- bank dykes – 7250 m (along the staking grid line), 7220 m (along the dam crest axis with the level +231.5 m). PSPP water intake facility It is located in the bund wall body. The flow part is presented by seven different pipes of variable cross-section connected by joint foundation plate. In the upstream race side piers, behind the intake wall, there are side recesses of repair gates. The gates are serviced by a gantry of 2 х 180+5 t. capacity Intake facility general size: – Length along the head front – 85.0 m; – Width in the direction along the flow – 64.7 m; – Maximum height – 35.25 m. Underwater penstocks From the water intake facility towards PSPP building shafts there come seven penstocks lines each of which includes: –Vertical penstock with steel-concrete fixtures approximately 100m high and 7.5 m in diameter; –Horizontal site nearly 400 m long, of which 200 m have concrete fixtures of 500 mm thickness and 200 m with steel-concrete fixtures PSPP building It is located in the near-slope part of the Dniester right bank. The PSPP building is of shaft type and includes seven shafts of 26 m di- ameter each, located in plan in a row with 54 m distance between each of them. Structurally the PSPP building is subdivided into: –Subsurface part, where the main hydro-power and accessory equipment is located; –Surface part, including surface building for the main generator and technological building. Offtake waterways They offtake from each of PSPP seven shafts. The waterways length is 120 – 150 m, inner diameter – 8.2 m. Spillway It is located at the end of penstocks and consists of seven separate concrete-steel intake mouths, the spans of which are covered with waste rakes and repair flat gates. The gates are serviced by a gantry of 2 х 63+5 t. capacity. Size of the spillway: –Length of the head front – 182.0 m; –Width in the direction of the flow – 45.0 m; –Height – 28.8 m. Take-out channel It is designed to conjugate spillway facilities with the PSPP down- stream reservoir. Channel width at the spillway 182 m, average width – 300 m. The channel bottom level 64.0 m is accepted on the condition of en- suring normal hydraulic mode. This level is an average mark of the bed half-rock and the lowest mark of the Dniester bottom.

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3 Table 4.3 presents HPP-2 facilities specifications. Table 4.3 –HPP-2 facilities specifications Facility Specifications 1 Earth dam Non-overflow dam. The upstream side is made of loam, the down- 1.1 HPP-2 left-bank dam stream side is of loam and loamy sand. Dam crest level is 84.0 m. Dam length along the crest – 520.0 m. Width by the crest – 10 m. Maximum height – 23 m. Slopes fixture: – Upstream slope till the level 78.7 m – steel-concrete plates on a one-layer filter of sand-gravel mixture; – Higher than 78.7 m – light-weight steel-concrete fixture 15 cm thick along the layer of sand-gravel mixture; – Downstream slope till the level 76.0 m in the place of joining riser – with the monolithic steel-concrete plates; – On other sites – unsorted rock mass on the layer of sand-gravel mixture.

Non-overflow earth dam. It is made of dump soil from claystone

quarry with the screen from loam soil. Crest level – 84.0 m. Dam 1.2 HPP-2 right-bank dam length along the crest – 192 m, maximum height – 22 m. Slopes fixture is analogous to the left-bank earth dam slopes fixture. 2 HPP-2 spillway dam Twelve-span spillway with broad crest at the level 64.0 m. Span width is 7.5 m. Consists of three sections of 41.5 m length. Length of the spillway dam is 124.5 m, its height – 26 m. The dam is equipped with flat gates of surface type. It is services by two gantries of 150×2+30 t capacity. Crest level is 84.0 m. From upstream race side there is a bridged passage. 3 HPP-2 building HPP-2 building – is one three-units section 33 m long, 43.78 m wide in the bottom. HPP-2 building height is 33 m. Water intake waterways 7.5×8(h) m – are equipped with spillway sliding gates of the deep-seated type, which are service by the gan- tries of the spillway dam. Assembly site joins the HPP-2 building from left-bank side, spillway dam joins the building from the right- bank side. 4.1.3 Specifications of the protective facilities 1 Patterns of flow levels in the downstream reservoir in the conditions of full design readiness of the upstream reservoir influence the operation of the facilities located in the zone of downstream reservoir impact and include protective facilities of settlements and right-bank and left-bank protective facilities including: Settlements protective facilities: - protection of vil.Bernashivka; - protection of vil. ; - protection of vil.Ozhevo; - protection of vil.Vasylivka; - protection of vil.Voloshkovo. Right-bank protective facilities include:

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- bank strengthening on the site from the HPP-1concrete reinforcement to the right-bank concrete road entry; - site 3; - site 2; - site 1 from vil.Ozhevo to vil.Vasylivka; - site 4 from PSPP right-bank riser till NDSh; - site 5. Left-bank protective facilities include: - reinforcement site at HPP-1 downstream race; - bank strengthening on the site of HPP-1 – HPP-2 highway from control point 0 to con- trol point 6+50; - site 10а; - site 10; - site 9; - site of bed widening in the area of PSPP main facilities; - site 8; - site downstream of vil.Kozliv. Annex F presents the scheme of protective facilities. 2 Protection of settlements Settlements’ protection facilities include protective dams, drainages, facilities to divert runoff and drainage from behind-the-dam territory, spillway facilities, designed to route high water flows, channels, accumulating reservoirs with pumping stations as well as construction and reconstruction of roads, bridges, pipes-crossings and other facilities. 3 Protection of vil.Bernashivka Village Bernashivka is located on the left-bank of the downstream reservoir. Protective facilities include: - waterway on the end site of the river Zhvan with stone-earth protective dams; - facilities to divert runoffs and drainages with accumulating reservoir and pumping sta- tions; - drainage elements; - territory planning; - landslide control, water-diverting and erosion-control measures for the banks and slopes; - waterways through stream diversion channel with a crossing bridge across it; - bridge for pedestrians. 4 Protection of vil.Kozliv Village Kozliv is located on the left bank of the downstream reservoir. Protective facilities include: - earth protective dam at cut-and-fill site 5 m high with slopes reinforcement from res- ervoir side from the level +66.500 m to +79.000 m; - facilities to divert runoffs and drainages with accumulating reservoir and pumping sta- tions; - drainage elements;

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- territory planning 5 Protection of vil.Ozhevo Village Ozhevo is located on the right bank of the downstream reservoir. For village protection there are: - protective dam at cut-and-fill site 4 m high with slopes reinforcement from reservoir side from the level +66.500 m to +79.000 m. - system of facilities to divert runoffs and drainages, which also include a depression “Zapadnia” and ravine of the vil.Ozhevo, with the account of which water diversion facilities are stipulated with further joining of accumulating reservoir and pumping station to remove runoffs and drainages.

6 Protection of vil.Vasylivka Village Vasylivka is located on the right bank of buffer reservoir in the mouth part of the Dniester right-bank tributaries  rivers Sokirianka and Kobolchi. Protecting facilities include: - earth protective dam at cut-and-fill site up to 5 m high with slopes reinforcement from reservoir side from the level +66.500 m to +79.000 m; - closed and open facility for diverting rivers Sokirianka and Kobolchi; - pumping station to divert runoffs and drainages; - pumping station receiving reservoir; - drainage elements; - territory planning. 7 Protection of vil.Voloshkovo Village Voloshkovo is located on the right bank of buffer reservoir, practically opposite the village of Kozliv. Protecting facilities include: - territory planning till the level +76.500 m; - crossing over the stream; - bank reinforcement in the area of the residential area. Bank protecting facilities of the downstream reservoir Protecting facilities of the right and left banks include: bank reinforcement facilities, protecting dams, runoffs diverting facilities from behind-the-dam territory, spillways, calcu- lated to route high waters, channels as well as construction and reconstruction of roads, pipe- crossings and other facilities.

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4.2 Operation of the hydro-technical facilities 4.2.1 Dniester HPP-1 facilities 4.2.1.1 Hydro-systems facilities of HPP and PSPP Dniester cascade are operated by local instructions developed on the basis of the typical instructions: - Technical operation of electric power plants and grids. Regulations. ГКД 34.20.507- 2003. Order of the Ukrainian Ministry of Energy and Coal №296 dated 13.06.2003; - Revision 1 to ГКД 30.20.507-2003 Technical operation of electric power plants and grids. Regulations. ГКД 34.20.507-2003. Order of the Ukrainian Ministry of Energy and Coal №609 dated 19.12.2005; - Other normative documents of the Ukrainian Ministry of Energy and Coal. 4.2.1.2 List of the local instructions to operate Dniester HPP-1 Dniester Document name Developer Place of storage Regulations to operate Dniester multi-purpose JSC c.Novodnistrovsk, hydro-system. Part 1. Main facilities “Ukrgidroproject” Sokirnyanskiy dis- Section 2. Concrete facilities of the main hydro- trict, Chernivtsy ob- system (589-39-Т21) last. Directorate of Section 3. Stone-earth facilities of the main hydro- the Dniester HPP and system (589-39-Т22). PSPP cascade Section 11. Hydro-technical facilities of the buffer hydro-system (589-39-Т28) Control over the condition and operation of Dniester HPP-1 hydro-technical facilities is performed with the help of instrumental observations read from in-built instrumentation and with the help of visual observations during periodic inspections of earth dams, their joints with the concrete facilities and bank abutments. Instrumentation observation provide for controlling the following quantitative parameters of the dams’ condition: - Seepage conditions including observations over piezometer levels in the dam body and in the basement, in bank abutments with the help of with the help of standpipe and em- bedded piezometers as well as monitoring of seepage water runoffs in the left-bank drainage system, by-pass seepage, water outflow from the basement at the approach gal- lery (on the marking of + 99.000 m) with the help of weir gauges, flow testers and through discharge volumetric measurements; - Sinking of earthwork structures through levelling the altitude marks; - Sustainability of right-bank slope with the help of inverted plumb lines and shear measur- ing device as well as through levelling deep bench marks and range marks in two geodet- ic points - Sinking and pore pressure in the core of the left-bank earth-and-rock-fill dam (at one point) with the help of tele-deformation gauges and piezo-dynamometers; - Crack formation in the cores of right-bank and left-bank earth-and-rock-fill dams via controlling water levels appearance and change in piezometers, installed from the dam crest into strip drains: bands of sand and broken stone dumped in narrow strips in the dam core at different levels. Visual observations provide for controlling the following qualitative parameters of the dams’ condition: - Availability and development of soil subsidence at the dams, banquettes and slopes;

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- Availability of landslides at the levees and bank slopes; - Water seepage on the levees and slopes, emergence of springs and mud springs, for- mation of ice aprons on the seepage water outflows, emergence of wetlands; - Seepage water turbidity; - Waste generation and number of drainage devices increase; - Operability of instrument control systems. 4.2.2 Dniester PSPP water reservoirs and hydro-technical facilities operation 4.2.2.1 General requirements to the reservoirs’ technical condition 4.2.2.1.1 All the facilities, extensions and other elements of the Dniester PSPP upstream and downstream reservoirs located within its boundaries and within the water protection zone must be maintained in serviceable condition. 4.2.2.1.2 Observations over riparian territories’ silting, growing-over, water-blooming as well as over banks development, shallow waters development and technical conditions of the reservoirs facilities must be performed by the reservoirs operating department staff as part of their official responsibilities. 4.2.2.1.3 Together with the operative observations over reservoirs’ silting the observations over banks development, growing-over, sediments accumulation, full and regulated reservoirs’ storage capacities should be conducted as routine operative observations. The observations are to be conducted in accordance with the requirements of the “Instruc- tions to the hydro-meteorological stations and gauging stations”. The observations results should be registered in the reservoirs’ technical condition log. 4.2.2.1.4 To evaluate the reservoirs’ operative conditions to regulate the flow it is neces- sary to know their actual regulating capacity. Dynamic regulating capacity for the buffer reser- voir should be determined with the help of special measurements with water levels’ levelling by the speed of the reservoirs emptying as specified by the Regulations for operating silted reser- voirs of small and average storage (ПР 34-70-009-83, М, Soyuztechenergo, 1985). 4.2.2.1.5 The operative department should perform observations over identifying water- logged territories adjacent to the reservoirs. When observing riparian territories visual control should be ensured to identify water logged territories. At the identified water-logged zones, it is necessary to make detailed investi- gation: the area of the water-logging spread and the depth of the ground waters occurrence. The land users must be informed about the investigations’ results. 4.2.2.1.6 To identify abrasion areas and the banks development intensity it is necessary to observe their non-strengthened sites. Reconnaissance observations over reservoirs’ banks are performed when necessary: after spring floods, summer-autumn rain shower high-waters as well as in the middle of summer and in the autumn before reservoirs’ freezing. 4.2.2.2 Hydro-technical facilities operation 4.2.2.2.1 Operation of the Dniester PSPP upstream and downstream reservoirs’ hydro- technical facilities is performed on the basis of the local instructions developed on the basis of the Typical operating instruction “Hydro-power stations’ hydro-technical facilities” (ГКД 34.12.542-93) and other normative documents issued by the Ukrainian Ministry of energy and coal. With this purpose as stated in the “Typical regulations on HPP structural subunits…” (РД 34.04.502) a special production subunit is set having production and organizational structure.

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4.2.2.2.2 Control over hydro-technical facilities’ condition is performed in accordance with the section “PSPP facilities monitoring. Refinement of the project for PSPP 1st phase consisting of 3 units including the measures to enhance reliability and safety of hydro-technical facilities, main hydro-power equipment and hydro-mechanical equipment. PSPP 1st phase composed of three units. Construction completion. Explanatory note”, 2010 (732-1-Т14 Зм. 1). According to the current Ukrainian normative documents pressure hydro-technical installa- tions are equipped with automated system for diagnostic control (ASC) to ensure its operability and efficiency. The purpose of the ASC is to have authentic information about the hydro-technical instal- lations condition with the help of modern technical tools to enhance reliability, efficiency and operative control over the safety status of PSPP pressure facilities. Purpose of the ASC that includes hardware and software system is to: - Ensure primary information automated collection and processing; - Ensure entry, processing, interpretation, analysis, and presentation of all the results of natural control observations (including the non-automatic observations data) through using spe- cial software and information processing technologies; - Operatively present the required information about the Dniester PSPP condition to the corresponding departments and controlling agencies. 4.2.2.2.3 A special control is performed over the PSPP main concrete installations to in- clude: - Concrete installations’ subsidence, slanting and shifting, as well as cracks emergence and development; - Stressed condition of the steel concrete fixation of the undersurface installations (tunnels and equipment shafts), deformations in the surrounding rock medium as well as stressed condi- tion of undersurface installations separate structures (PSPP building, water reception facility and intake chamber); - Seepage heads in the basement of the water reception facility and water outlet, contact and bypass filtration, seepage flows from the drains as well as ground waters pressure in the sol- id and by the outline of tunnel water outlets and hydro-units’ pits; - Turbidity, temperature and chemical composition of the filtered water; - Hydro-dynamic characteristics of the head flow in the hydro-units’ water conveyance systems, etc. 4.2.2.2.4 As regards earth installations of upstream and downstream reservoirs, the follow- ing control is executed: -Subsidence and shift of the fencing dams of the PSPP upstream reservoir, protecting dams of the downstream (buffer) reservoir, soil fills of the depressions on the Dniester slope, located in the close proximity to the upstream reservoir; - Pore pressure, preservation of the upstream reservoir bottom and protecting dam loam screens and properties changes in the laid soil; - Status of the upstream reservoir levee front fixing and downstream reservoir levees con- dition; - Levels of the seepage flow in the protecting dike and levee bodies, ground waters outlets to the slopes and berms, drainage seepage, turbidity, temperature and filtered water chemical composition; - Planned-high-altitude shift of the slope surface in the zone of PSPP head waterways and other slide-dangerous the rivers Dniester and Sokirianka in the area of the upstream reservoir; - Wave, ice-thermal and hydraulic conditions in upstream and downstream reservoirs;

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- Scours and other disturbances of the reservoirs’ slopes and bottoms. 4.2.2.2.5 The following control measures are undertaken for the facilities of engineering protection: - Change of ground waters level on the territories protected from flooding and water- logging to control the norm of drying, especially on the populated areas; - Change of chemical composition of the ground waters that are used as a water supply source from the 1st from the surface aquifer. 4.2.2.2.6 Monitoring of the hydro-technical facilities general condition and their impact on the reservoirs water area, banks, and water protection area must be implemented by the organiza- tions that operate those facilities and the department for reservoirs operation.

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5 HYDRO-METEOROLOGICAL SUPPORT AND ACCOUNT OF THE RESER- VOIRS’ WATER RESOURCES UTILIZATION 5.1 Observations over the reservoirs’ hydro-meteorological mode and account of the river Dniester flow

5.1.1 The Dniester hydro-power system components are: - HPP-1 with Dniester reservoir; - HPP-2 з buffer reservoir. 5.1.2 Planning of the Dniester reservoirs operating modes and control over maintaining their necessary mode are performed on the basis of actual and forecasted meteorological condi- tions as well as characteristics of the Dniester basin rivers and the Dniester reservoirs hydrologi- cal modes. The seasonal requirements of the water consumers and water users should also be taken into account. 5.1.3 A network of meteorological and hydrological stations as well as gauging stations subordinated to State Emergency Service of Ukraine (SESU) perform observations over the ele- ments of meteorological and hydrological modes in the Dniester basin on the Ukrainian territory. In total, there are 13 meteorological stations, 65 river gauging stations in the Ukrainian part of the Dniester basin. 62 of them measure the water flow. The Dniester reservoir has 7 lake gauging stations and the buffer reservoir has 3 lake gauging stations. The lake gauging stations are subor- dinated to the lake gauging station in the town Novodnistrovsk. The river gauging stations are subordinated to the SESU Lviv regional and Chernihiv and hydro-meteorological centers. On the Molodovan part of the Dniester river 11 gauging stations perform the hydro- meteorological observations. They are integral to the state hydro-meteorological service of Mol- dova. Annex G presents the list of standard hydro-meteorological observations and operations within the hydro-meteorological grid. 5.1.4 Permanent control over the water levels in the Dniester HPP-1 upstream and down- stream water races is executed by the lake gauging station Novodnistrovsk through measure- ments at the lake gauging station «Novodnistrovsk-upstream race» and the gauging station «No- vodnistrovsk-downstream race». To study the Dniester reservoirs’ hydro-meteorological mode and control their pollution level the reservoirs operation department in addition to the available network of the SESU gaug- ing stations set up extra network that includes the operating gauging station in the downstream race and planned for opening level control stations in the Dniester HPP-2 upstream and down- stream races as well as gauging stations on the rivers Zhvan and Karayets. The Dniester PSPP project stipulates installing devices to measure water levels in upstream and downstream reservoirs. 5.1.5 To plan the reservoirs’ operation modes (the Dniester HPP-1, the buffer Dniester HPP-2, upstream reservoir PSPP, including the PSPP itself), as well as to take into account the routine work of the servicing personnel the operating department must have meteorological ob- servation data from the meteo-stations: Novodnistrovsk, Kamianets-Podilskiy and Mohuliv- Podilskiy. 5.1.6 The diagram of the gauging stations location (the acting and the designed ones), where current control of the Dniester river, Dniester and Dubosary reservoirs’ water resources condition is presented on the Figure 5.1, and the list of gauging stations to work on the water sur- face of the Dniester and Dubosary reservoirs, including the part of the Dniester downstream of Mohuliv-Podilskiy and down to the river mouth, is presented in the Table 5.1.

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5.1.7 Control over the water influx into the Dniester reservoir is performed by the results of the observations at the gauging stations, located at the Dniester river near t. Zalischyky (in- flow station), and at the tributaries that flow into the reservoir on the site between t. Zalischyky and the Dniester HPP-1: r.Seret, r.Nichlava, r.Zbruch, r.Zhvanchyk, r.Smotrych, r.Muksha, r.Studenytsia, r.Ushytsia та r.Kalyus. The discharge volume from the Dniester reservoir is de- termined by the flow account at the Dniester HPP-1. Control over water influx into the buffer reservoir is performed by the data of the Dniester HPP-1 (head range) outflow and by hydromet- ric data of the rivers Zhvan and Karaets or analogous rivers (intermediate inflow). Water dis- charge volume from the buffer reservoir, including the period of environmental-reproductive re- leases towards the Dniester lower reaches, are controlled by the data of the Dniester HPP-2 out- flow and hydrometric observations at the gauging station near t.Mohuliv-Podilskiy. 5.1.8 To evaluate the current status of the Dniester river water resources and perform control over their utilization it is necessary to ensure well-coordinated performance of multiple works by the competent organizations in accordance with their profiling: - State Agency for Water Resources and its water engineering organizations perform monitoring of the water quality in the control stations in the areas of drinking water abstraction, water-engineering systems of inter-branch and agricultural water supply and perform state ac- count of the water use; - JSC “Ukrgidroenergo” and National Energy Company “Ukrenergo” should ensure reli- ability of the water flow account at HPP-1 and HPP-2, provide for conducting research in this frame, provide sufficient data about flow-rate through the hydro-systems to the stakeholders, in- cluding detailed data about the high waters routing through both HPPs; - Hydro-meteorological department of SESU (Hydromet-service of Ukraine) can spread its program to perform hydro-meteorological observations in the Dniester river basin with ensur- ing updating of the capacities and improving observation methods as well as hydrometric opera- tions, as well as improving forecasting methods, adapt and commission modern forecasting sys- tems.

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Figure 5.1 – Sketch-Map of Dniester basin rivers and reservoirs gauging stations location

Аркуш 732-39-Т48 40 Зм. Кіл. Аркуш №toк Підп. Дата Period of the station operation Period, during which observation data are available Distance Station “0” Station Catchment water chemi- River, reservoir Station from mouth, Departmental identity marking, m, water tempera- ice thick- No area, km2 opened closed water level flow rate cal composi- km BS ture ness tion 1913- 1908-1911 1918, 42 1913-1918, 1920, State hydromet service 1 Dniester v.Strilky 1317 384 01.10.1907 Operational 405,49 1920-1929, 1925- 1950-2016 1945-2016 - SESU Ukraine 1940-1943, 1929, 1945-2016 1958- 2016 1867, 1894- 1900, 1902- 1948-1950, 1910, 1921- 1946- 2 Same t.Sambir 1278 850 Same 1850 Same 284,17 1950-2016 1945-2016 1953-1956, 1929, 1940, 2016 1959-1962 1941, 1944- 2016 1878 1958- 3 -«- t.Rozdol 1191 5700 -«- -«- 243,18 1958-2016 - 1958-2016 - (01.03.1958) 2016 1895- 1914, 1894-1900, 1926- 1902-1914, 1929, 4 -«- t.Zhuravno 1159 9910 -«- 1878 -«- 231,52 1916-1918, 1950-1975 1945-2016 - 1941- 1926-1929, 1946, 1946-2016 1972- 2016 1895- 1894-1900, 1915, 1902-1915, 1918, 1918, 1920- 1948-1955, 5 -«- t.Galych 1117 14700 -«- 1876 -«- 211,26 1920- 1950-2016 1945-2016 1929, 1940- 1961 1929, 1980, 1983- 1946- 2016 2016 1895- 1894-1900, 1914, 1902-1911, 1920- 1913, 1920- 6 -«- v.Nyzhniv 1072 20400 -«- 1850 -«- 190,36 1929, 1950-2016 1945-2016 - 1929, 1940, 1941- 1942, 1943, 1943, 1945-2016 1946 1877, 1888, 1895- 1893-1900, 1914, 7 -«- t.Zalischyky 936 24600 -«- 1850 -«- 140,69 1950-2016 1945-2016 1979-2016 1902-1911, 1917, 1913,1914, 1918,

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43 1920-1929, 1920- 1940-2016 1929, 1940- 2016 8 -«- v.Rukhotin* - - -«- 20.09.1986 -«- 110,00 1988-2016 - 1986-2016 1986-2016 - 1882-1920, State 1925-1941, 1945- 9 -«- v.Zhvanets* - - hydromet service of SESU 01.09.1985 Operational 110,00 1985-2016 1984-2006 1963-1970 1945-1980, 2016 Ukraine 1988-2016 Dniester reser- 10 v.Ustya* - - Same 01.08.1985 Same 110,00 1988-2016 - 1985-2016 1985-2016 1987-2016 voir 11 Same v.Grushivtsi* - - -«- 31.10.1984 -«- 110,00 1988-2016 - 1985-2016 1984-2016 - 12 -«- v.* - - -«- 04.10.1984 Closed 110,00 1984-2016 - 1984-2013 1984-2016 - Dniester reser- 13 v.Korman* - - -«- 01.07.2013 Operational 110,00 - - - - - voir 14 Same v.Neportove* - - -«- 09.11.1983 Same 110,00 1988-2016 - 1984-2016 1983-2016 - Dniester reser- t. Novodnistrovsk, 1983- 15 675 - -«- 20.10.1982 -«- 110,00 1988-2016 1984-2016 1982-2016 1987-2016 voir upstream race (UR) 2016 flow ac- JSC 16 Dniester Dniester HPP-1 677 40500 01.11.1983 -«- 67,40 1983-2016 count at - - - «Ukrgidroenergo» HPP Operational, t. Novodnistrovsk, State 01.12.1984 17 Buffer reservoir downstream race 675 40700 hydromet service of SESU 20.10.1982 64,00 1988-2016 - 1984-2016 1982-2016 - transferred to (DR) Ukraine lake-type 18 Same vil.Kozliv 664 - Same 01.11.1988 Operational 64,00 1988-2016 - 1988-2016 1988-2016 - 13.01.1877 1936-1941, 1950- 1954-1967, 19 Dniester t. Mohuliv-Podilskiy 630 43000 -«- Same 58,17 1950-2016 1945-2016 (01.01.1983) 1945-2016 2016 1986-2016 State Hydromet-service 13.07.1982 20 Same v.Soroky 550 47000 -«- 41,07 1945-2016 - 1945-2016 1945-2016 - Moldova (27.07.1945) v.Grushka 48700 01.11.1967 32,61 1968- 21 -«- 509 (473) Same -«- 1967-2016 1967-2016 1967-2016 - (t.Kamianka) (49000) (04.09.1885) (27,83) 2016 Dubosary reser- 14.08.1905, 1905-1917, 22 t.Rybnytsia* 423 50900 -«- -«- 19,38 - - - - voir 1954 1945-1954 State enterprise 1956- 23 Dniester Dubosary HPP 351 53600 01.01.1956 -«- 20,00 - - - - «Dubosary HPP» 2016 24 Same t.Dubosary, DR* 351 53600 Same 30.12.1954 -«- 20,00 1958-2016 - 1945-1954 - - 25 -«- t.Grygoriopil 286 63100 State Hydromet-service 31.10.1911 -«- 6,11 1949-2016 1949- 1954-2016 - -

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44 Moldova (01.10.1949) 2016 1881- 13.01.98 1915, 26 -«- t.Bendery 214 66100 Same -«- 1,83 1945-2016 1949-2016 - 1965-1970 (30.01.1945) 1945- 2016 1901-1920, 27 -«- t.Teraspil 191 67900 -«- 13.01.1900 -«- 2,65 1924-1940, - 1945-2016 1954-1970 1965-1970 1945-2016 State Hydromet-service 05.02.1900 1959- 28 -«- v.Oloneshty 77 68900 Closed - 1,92 1950-2016 1949-1970 1950-1970 1959-1970 Moldova (12.08.1949) 2016 -«-(branch 20.12.1928 1972- 29 v.Nezavertailivka 6,9 - Same Operational -0,34 1969-2016 1969-2016 1950-2016 - Turunchuk) (01.01.1969) 2016 1901-1917, OSEU (Odesa State Ecolog- 30 Dniester v.Chervoni Mayaky 15 72000 18.02.1900 Same - 1,11 1926-1941, - 1950-2016 1945-2016 - ic University) 1944-2016 1898-1900, 1963- 1902-1929, State hydromet service of 1897 1988, 31 Strviazh t.Khyriv 64 353 -«- 343,50 1944-1962, 1950-2016 - 1964-1970 SESU Ukraine (01.01.1998) 1996- 1963-1988, 2016 1995-2016 1867, 1894- 1900, 1902- 11, 1913, 1914, 1916, 1957- 32 Same v.Luky 6,1 910 Same 1863 -«- 263,31 1950-2016 1945-2016 - 1917, 2016 1923-1929, 1940, 1941, 1943-2016 1900 1940, 1941, 1957- 33 Vereschytsia t.Komarno 15 812 -«- -«- 257,38 1950-2016 1945-2016 1963-1969 (25.04.1940) 1944-2016 2016 1940- 1897 1943, 34 Tysmenytsia t.Drogobych 21 250 -«- -«- 267,56 1945-2016 1950-2016 - - (07.09.1944) 1945- 2016 -«- 1954- 1950-2016 35 Bystrytsia v.Ozymyna 35 206 07.1932 -«- 274,35 1945-2016 1945-2016 - 2016 -«- 1899 1945- 36 Scherek t.Schyrets 19 307 -«- 258,85 1945-2016 1950-2016 1949-2016 - (19.06.1945) 2016

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45 1929- t.Verhnie Syn- 1941, 1954-1956, 37 Stryi 77 2400 -«- 1902 -«- 369,62 1942-2016 1950-2016 1945-2016 iovydne 1951- 1958-1970 2016 1893-1900, 1902-11, 1913, 1914, 1953- 38 Svicha v.Zarichne 24 1280 -«- 1987 -«- 278,50 1953-2016 1953-2016 1961-1970 1922-29, 2016 1940-1944, 1953-2016 1902-1906, 1909-1911, 1913,1920- 1957- 39 Svyzh t.Bukachivtsi 4,0 465 -«- 1902 -«- 224,52 1950-2016 1947-2016 1963-1970 29, 1940, 2016 1941, 1944- 2016 State hydromet service of 1904 1940-1943, 1954- 40 Limnytsia v.Perevozets 17 1490 Operational 236,03 1954-2016 1953-2016 1963-1970 SESU Ukraine (01.03.1940) 1954-2016 2016 1954- 41 Lukva v.Bodnariv 21 185 Same 16.12.1944 Same 282,02 1945-2016 1950-2016 1945-2016 1963-1970 2016 1945- 42 Gnyla Lypa t.Bilshovtsi 8 848 -«- 1899 -«- 215,45 1958-1975 1950-2016 1945-2016 - 2016 1893-1900, 1902-1908, Bystrytsia 1887 1910-1913, 1983- 43 t.Ivano-Frankivsk 5 777 -«- -«- 237,15 1950-2016 1945-2016 1963-1970 Solotvynska (21.06.1973) 1920-1929, 2016 1945-1973, 1987-2016 1959- 44 Bystrytsia v.Yamnytsia 12 2450 -«- 10.09.1959 01.10.1988 221,39 1960-1988 1960-1988 1959-1988 1965-1968 1988 1902-1911, 1913, 1914, 1955- 45 Zolota Lypa v.Zadariv 14 1390 -«- 1899 Operational 209,11 1925-1929, 1950-2016 1946-2016 1963-1970 2016 1940, 1941, 1946-2016 1889 1948-1957, 1958- 46 t.Koropets 3,2 476 -«- Same 201,31 1950-2016 1948-2016 - (11.03.1948) 1958-2016 2016 47 Strypa t. 33 1270 -«- 1900 -«- 266,62 1963-2016 1912, 1947-2016 - 1963-1970

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46 (12.07.1963) 1913, 1923- 1929, 1963- 2016 1940, 1897 1940, 1941, 1941, 48 Seret t. 75 3170 -«- -«- 208,85 1950-2016 - 1979-2016 (08.03.1940) 1945-2016 1944- 2016 1933 1955- 49 Nichlava v.Strilkovtsi 29 584 -«- -«- 179,18 1946-2016 1950-2016 1945-1980 - (14.06.1945) 2016 1971- 50 Zbruch v.Zavallia 20 3240 -«- 11.11.1971 -«- 136,16 1972-2016 1971-2016 1971-2016 1972-2016 2016 1930- 1931-1941, 1939, 1930-41, 51 Zhvanchyk v.Lastivtsi 7,0 703 -«- 14.08.1930 -«- 125,30 1950-2016 1964-1970 1952-2016 1954- 1945-2016 2016 1931- 52 Smotrych v.Tsybulivka 21 1790 -«- 10.08.1930 -«- 130,91 1930-2016 1950-2016 1945-2016 - 2016 1954- 53 Muksha v.Mala Slobidka 15 302 -«- 01.09.1950 -«- 148,36 1954-2016 1954-2016 1954-2016 1954-1970 2016 1970- 54 Studenytsia v.Golozubyntsi 42 296 -«- 22.08.1970 -«- 203,33 1981-2016 1970-2016 1970-2016 - 2016 -«- 1972- 55 Ushytsia v.Tymkiv 34 1150 06.09.1971 -«- 130,63 1972-2016 1971-2016 1972-2016 - 2016 25.10.1945 1951- 56 Kalyus t. 28 259 -«- -«- 164,26 1963-2016 1950-2016 1963-2016 - (17.08.1963) 2016 -«- 1946- 57 Batig v.Zamihiv 25 94,1 27.08.1946 11.09.1988 198,79 1946-1988 1950-1988 1946-1988 - 1988 58 Zhvan - - - -«- under design ------State 59 Karaets - - - hydromet service SESU under design ------Ukraine 1963- 60 Lyadova v.Zherebylivka 20 652 Same 23.07.1963 Operational 129,16 1964-2016 1963-2016 1963-2016 1970 2016 1961- 61 Nemia v.Ozaryntsi 12 359 -«- 08.08.1961 01.09.1988 126,09 1962-1988 1961-1988 1961-1988 - 1988 62 Murafa v.Kudiivtsi 147 70 -«- 01.06.1948 Operational 260,44 1948-2016 1962- 1950-2016 1948-2016 -

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47 2016 1939-1941, 1951- 63 Marakivka v.Pidlisivka 19 615 -«- 01.01.1939 Same 76,22 1950-2016 1945-2016 - 1944-2016 2016 State Hydromet-service 1959- 64 Chorna v.Chorna 1,2 307 15.10.1958 11.04.1975 34,00 1963-1974 1959-1975 - 1963-1970 Moldova 1975 1936-1941, 1949- 65 Yagorlyk v.Toibany 8,0 1220 Same 04.09.1936 Operational 28,92 1947-2016 - 1938-1940 1947-2016 2016 1957- 66 Reut v.Zholobok 46 7100 -«- 02.04.1957 Same 24,71 1957-2016 1957-2016 - - 2016 1949- 67 Ikel v.Pashakany 25 562 -«- 24.11.1940 01.01.1963 51,40 1945-1958 1945-1958 - 1952-1957 1959 1949- 1959, 1954- 68 Baltsata v.Baltsaty 15 62,4 -«- 01.01.1954 21.05.1977 51,60 - - - 1954-1957 1957, 1960- 1975 1940, 1941, 1945- 1945-1962, 1949-1955, 69 Byk t.Kyshyniv 72 882 -«- 01.07.1967 Operational 39,68 1945-1962, - 2016 1967-2016 1969, 1970 1968-2016 1941, 1947-1949, 1945-1962, 1949- 1950,1952, 70 Botna v.Kaushany 28 1210 -«- 01.12.1940 Same 7,89 1953-1962, - 1965-2016 2016 1960-1962, 1966-2016 1965-1970 Note - Asterisk symbol (*) indicates lake stations Table 5.1 – Hydrometric state of exploration at the Dniester basin rivers and reservoirs

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5.2 Provision of current hydro-meteorological information, hydrological and special- ized forecasts to the reservoirs’ operating department 5.2.1 Hydro-meteorological organizations of the State Emergency Service of Ukraine (SESU) provide water engineering agencies and hydro-energy institutions as well as reservoirs’ operating department and other interested stakeholders with the information regarding the cur- rent and expected meteorological and hydrological situation in the Dniester basin and reservoirs: - actual meteorological information, including daily and monthly weather forecasts; - short-term and long-term forecasts (consultations) regarding the Dniester reservoir influx amount; - disaster warnings as regards dangerous and disastorous hydro-meteorological events; - emergency information as regards the Dniester river and reservoirs pollution. 5.2.2 Hydrological forecasting in the Ukrainian part of the Dniester basin is performed by the hydro-meteorological organizations: - Ukrainian Hydro-meteorological center (UkrHMC, Kyiv); - Lviv regional center in hydro-meteorology (Lviv RCHM, Lviv); - Hydro-meteocenter of the Black and Azov seas (HMC BAS, Odesa). Similar works in the Moldova part of the Dniester basin are performed by the State Hydro- met service of Moldova. 5.2.3 Regular sharing of hydro-meteorological information and forecasts between compe- tent authorities of Ukraine and Moldova are performed to ensure holistic picture of the actual sta- tus of the Dniester river and its tributaries to account also the probable changes of the status. The sequence, forms, contents, ways and terms of the data exchange are framed by the “Program of cooperation between SESU Hydro-meteo-center and Moldova hydro-meteo-center” 5.2.4 Actual hydro-meteorological information, forecasts, consultations and disaster warn- ings are provided by the regional and oblast hydro-meteorological centers (Lviv RCHM, Khmel- nytskyi, Vinnytsia, Ternopil and Chornivtsi CHM) and the Novodnistrovsk lake station to the reservoirs operating department and other stakeholders according to the set procedure and Agreements for hydro-met support, which are signed annually between the corresponding SESU hydro-met service and the organization-consumer. The Agreements specify volumes, time frames, types of information provision and responsible persons from both sides. The main sub- jects of hydro-meteorological support are the following organizations: - on the national level: Ukrainian State Agency for Water Resources, National Energy Company “Ukrenergo”, JSC “Ukrgidroenergo”, UkrHMC, SESU operative service; - on the regional level: Dniester- Basin Authority to manage water resources, SESU hydro-met organizations, oblast water engineering departments, an affiliate of “Dniester HPP”, and an affiliate “Directorate in building The Dniester PSPP”. 5.2.5 Data about information-forecasting characteristics of the Dniester river basin (includ- ing also time frames for issuing hydrological forecasts) provided to the stakeholders are present- ed in Tables 5.2 and 5.3. Table 5.2 – Meteorological information Warnings and forecasts Elements - wind (including squalls and tornadoes), with max. 1 Disaster warnings about disastrous hydro- speed 25 m/s and more meteorological events and significant Significant slush build up, complex ice formation weather changes (DHE and SWC) with the diameter of 35 mm and more

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- significant air temperature change (100 С per day) or average daily t0 - by 50 С and more; - Significant black frost of 20 mm and more; - wind of 15-24 m/s and more speed - Slush build up, complex ice and black ice deposits 2 Disaster warnings about dangerous meteo- of 11 - 34 mm diameter; events (DE) - black ice of 6 - 19 mm diameter; - thunderstorm - data about actual weather by the meteo-stations 3 Current meteo-information Novodnistrovsk, Kamianets-Podilskyi and Mohuliv-Podilskiy - for the 1st, 2nd and 3rd days from the meteo-stations: Novodnistrovsk, Kamianets-Podilskiyта Mohuliv- Podilskiy 4 Weather forecasts - monthly on the Ukrainian territory, Lviv, Ivano- Frankivsk, Chernivtsi, Khmelnytskyi and Vinnytsia oblasts Table 5.3 – Hydrological information and forecasts

Forecast Responsible for Types of forecast materials Forecast issuance date time-frame the forecast

Long-term forecasts and consultations 1 Forecast for average water inflow into the Dniester reservoir: - during March - April Ukrainian Hy- 61 days March 1 dro-met-center (UkrHMC) - For March 31 days March 1 UkrHMC - For April 30 days April 1 UkrHMC 2 Consultation regarding average 1st day of the month for monthly water inflow for the rest 28-31 days which the forecast is UkrHMC months of the year prepared 3 Forecast for total water inflow dur- up to 60 February 25 UkrHMC ing spring floods days 4 Consultation regarding probable maximum Dniester spring flood flow up to 30 February 25 UkrHMC in the gauging station near t. Zalis- days chyky 5 Short-term forecasts and warnings 5.1 Forecast for average daily water

inflow: - total 1-2 days daily UkrHMC - intermediate inflow in the area: t. 1 days daily UkrHMC Zalischyky- the Dniester HPP site - gauging station site near 1-2 days daily UkrHMC t.Zalischyky - gauging station site near t.Galych 1 days daily UkrHMC 6 Forecast for the max.water level upon conditions emer- 6-36 hours Lviv RCHM (flow) at the gauging station site near gence & events devel-

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Forecast Responsible for Types of forecast materials Forecast issuance date time-frame the forecast

t. Zalischyky during high waters and opment spring floods 7 Forecast for the spring flood State Hydro- max.water level at the gauging sta- 24-48 hours Same met-service tion site near v.Oloneshty Moldova 8 Forecast for water inflow at the 4-6 days daily Same Dubosary HPP site Hydro-met- 9 Forecast for water level rising and center of the flood-plain flooding at the Dniester during high waters de- 24-48 hours Black and Azov river and its branch Turunchuk (Ode- velopment & floods seas sa oblast) (RCHM) 10 Disaster warnings about dangerous and disastrous hydrological events: - about flood inflicted water rise, ice- upon conditions emer- up to 1-2 jamming events in the Dniester basin gence & events devel- Lviv RCHM days rivers opment from several on the Dniester basin 11 Oral consultations regarding wa- hours to 5 rivers during high waters UkrHMC ter inflow into the Dniester reservoir days development & floods

5.3 Procedure to notify about water regime, ice conditions and the water quality 5.3.1 Reservoirs operating department should annually prepare notification plan to notify water consumers about the water regime and ice conditions at the reservoirs as well as about the water quality. The plan should contain a list and addresses of the water consumers as well as sources, types, time periods and means of information transfer. 5.3.2 Hydro-meteorological forecasts and reviews of the current hydro-meteo situations at the reservoirs, disaster warnings about dangerous and disastrous hydro-meteo-events are provid- ed by the corresponding SESU hydro-meteorological organizations within the time frames and by the ways of information dissemination, which are specified by the Agreements on hydro- meteorological servicing and support. 5.3.3 Emergency alarms and warnings about disastrous and dangerous hydro-meteo events, that develop in the reservoirs zones, should be provided by the reservoirs’ operating department via phone messages and other accessible modern mass communication (fax, e-mail) according to the notification plan to notify water consumers about the water regime. 5.3.4 Information about the reservoirs pollution is transferred to the water consumers, ob- last departments of the Ukrainian Sanitary Epidemiologic Service, departments of ecology and natural resources at the oblast state administrations (OSD) as well as Dniester-Prut water re- sources basin authority. 5.3.5 Dniester-Prut water resources basin authority (BAWR) and Odesa oblast water engi- neering department together with Ukrainian sanitary control agencies ensure quality control of the Dniester reservoirs water quality as well as control over the Dniester river site near drinking- industrial water abstraction points (in case of water quality deterioration the State Agency for Water resources and Ukrainian Ministry of Ecology and Natural Resources get notified).

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5.3.6 Systemic laboratory-production control over the conditions of effluents discharge and their impact on the reservoirs water quality must be undertaken by the water consumers. The re- ceived data are to be transferred to the reservoirs’ operating department. 5.3.7 Administrative and economic agencies of regions and settlements located on the res- ervoirs’ banks and downstream of the Dniester HPP-2, in the zone of the discharged effluents impact, should be informed by the reservoirs’ operating service in advance about the sequence of high waters and floods routing. For this, the date of reservoirs’ and the river’s water level rising, the levels’ variations and water volumes discharges into the downstream race at the specified dates. 5.4 Arranging and implementing measures to account usage of the reservoirs water resources 5.4.1 Account of the water usage is performed by the single national system according to the Ukrainian Water Code, Paragraph 6 (State Account of Water Usage) and Regulations to keep the State Water Cadaster, developed in accordance with the Ukrainian Water Code, Article 28 and approved by the Ukrainian Cabinet of Ministers Resolution No. 413, dated 8 April 1996. 5.4.2 The current account of the reservoirs water resources usage should be performed by the reservoirs’ operating department in the form of a water balance log according to the “Manual for processing and preparing for print the material of observations at lakes and reservoirs”, [Hy- drometizdat, Leningrad, 1957]. 5.4.3 Operational water balances (for decade and monthly) should be systematically pre- pared in the process of the reservoirs operation. 5.4.4 After the calendar year is over, the previously prepared operative balances are cor- rected and annual water balance is compiled. 5.4.5 Water balance elements are subdivided into the incoming and outgoing parts (for the calculated time interval). Their values are expressed in mln.cub. meters with rounding to three significant figures. 5.4.6 Sequence of determining major water balance elements on the example of the Dnie- ster and buffer reservoirs are provided lower. Incoming part: - influx into the Dniester reservoir (determined by the data from the gauging station near t. Zalischyky and stations at the intermediate inflows: r.Seret - t.Chortkiv, r.Nichlava - v.Strilkivtsi; r.Zbruch - v.Zavallia; r.Zhvanchyk - v.Lastivtsi; r.Smotrych - v.Tsybulivka; r.Muksha-v.Mala Slobidka; r.Studenytsia-v.Golozubyntsi; r.Ushytsia-v.Tymkiv; r.Kalius-v.Nova Ushytsia); - influx itno the buffer reservoir (determined by the The Dniester HPP-1 flow rate; inter- mediate inflow volume is determined by the calculation (with using hydrometric data for the riv- ers Zhvanі, Karaets or by the analogous rivers, if necessary); - water incoming at the expense of atmospheric precipitations (determined by the observa- tions undertaken by precipitation measuring stations located on the banks (in the zone) of the reservoirs and with the account of average water surface area at the calculated time period; - influx of effluents into the Dniester (buffer) reservoir (determined by the water consum- ers data on the basis of state reporting forms processing № 2-ТП (vodgosp) Outgoing part: - water outflow through the HPP -1 (HPP-2) hydro-system facilities (determined by the re- porting data: through the hydro-turbines – by hydro-units discharge characteristic; through the spillways – by hydraulic formulas with the account of calibration);

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- seepage from the reservoirs at the hydro-systems’ sites (accepted by the design or hydro- metric data); - subsurface outflux into the reservoir bed rocks (its volume is determined on the basis of special geologic and hydro-geologic investigations); - free-water surface evaporation value (it is calculated with the account of meteorological observations on the reservoirs banks and surfaces by an average surface area during the calculat- ed period interval); - water abstraction from the reservoirs (these data should be developed on the basis of water users reports (format № 2-ТП (vodgosp)).

Variation of the reservoirs’ water volume during the calculated period interval: - variation of the water volume in the reservoir during the calculated period interval is de- termined by the data about the water levels with using statistical morphometric curves. Admissible relative mismatch of the reservoirs’ monthly and annual water balances should not exceed 5%. 5.4.7 Annual water resources usage report should be performed in the format of infor- mation-registration card on a water reservoir utilization (reporting rules have been developed by the Ukrainian Scientific Research Institute for Ecological Problems (UNDIVEP) on the basis of the Provisions for waters state account and utilization) [Provisions on the state system of envi- ronment monitoring. Approved by the Ukrainian Cabinet of Ministers Resolution No.391, 30.03.1998, and in pursuance of the Ukrainian State water engineering service (derzhvod- gosp)order No.100 of 24.10.1994]. 5.4.8 When compiling the card, the following normative documents should be a guidance: - Ukrainian State Statistical Bureau (Derzhcomstat) Order No. 264 of 27.07.1998,typical forms № ПОД-11 and № ПОД-12; - Ukrainian Tax Code (Section XVI. Water collection and special water use. Article 325.3). 5.4.9 Reservoirs’ Operating department jointly with the Dniester-Prut basin water re- sources authority ensure: а) control over: - correctness of the primary account by the water users the volumes of the abstracted water and discharged effluents within the reservoirs; - availability and condition of the metering equipment to account water consumption and discharge; - adherence to the periods of the water metering equipment certification; б) account of the water reservoirs’ utilization on the basis of the water consumers reports; в) mutual information sharing with the State Hydro-meteo-Service, SESU, Ministry of In- ternal Affairs; г) registration of the water users and water consumers.

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6 THE DNIESTER RESERVOIR OPERATION SERVICE 6.1 Organization of the water reservoir operation service 6.1.1 Organization of the operation service The Dniester reservoir operation service was created at the Novodniestrovsky regional Dniester water resources and operation department (hereinafter – the Novodniestrovsky RWRD). Within the sphere of its competence, the Novodniestrovsky RWRD shall perform man- agement of the water resources located in the area of the water resources inventory of the Dnie- ster reservoirs, including the largest one among them – the Dniester water reservoir.

6.1.2 Objectives of the operation service The key objectives of the operation service are as follows: - organize measures to reclaim surface waters and to ensure upkeep of the water reservoir; - grant permits to carry out operations on the lands of the water resources inventory; - make proposals concerning the establishment of the reservoir operational conditions and control of the observance thereof; - perform analysis and synthesis of information about the quality of water; - within the sphere of competence presented by the Dniester-Prut BWRD, carry out inter- national cooperation with the Republic of Moldova in the field of water resource management, conservation and reproduction; - carry out maintenance activities at hydraulic engineering structures designed to protect populated areas and lands from flooding, waterlogging, wearing of banks, and to ensure their trouble-free performance; - ensure the functioning of the operations control center designed to inform the Dniester-Prut BWRD of the threat of or the occurrence of a man-caused or natural emergency situation. Enterprises, organizations and persons that caused damage through failure to observe these "Regulations…", shall be liable under the Water code and other acts of legislation.

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7 ENVIRONMENTAL REQUIREMENTS 7.1 Key requirements 7.1.1 All enterprises, organizations and individuals must meet the requirements concerning the avoidance of water reservoir contamination, and prevent water erosion in the coastal protec- tion belts. Disposal of untreated waste waters, contaminants, solid waste and garbage is prohibit- ed in accordance with The Water Code of Ukraine, Article 44. The hydrometric service, the BWRD or other control bodies shall perform regular monitor- ing of the state of water at the following points: downstream of the town of Zalishchyky; downstream of the village Ustya; downstream of the village Zhvanets; top and tail waters of the HPP-1 dam, city of Novodniestrovsk; downstream of the estuary of the river Zhvan; in the vicinity of the village Ozhevo; in the vicinity of the village Kozliv; downstream race of the HPP-2. 7.1.2 All the water users must have a permission for a special water consumption, keep records of water abstraction from the reservoir, maintain water treatment and other water facili- ties in serviceable condition. 7.1.3 Construction, dredging and explosion works, sand and gravel extraction, laying of cables, pipelines and other communications in the reservoir influence zone shall be performed upon authorization of the state environmental, water economy and geology authorities in compli- ance with the Water Code of Ukraine, Article 87. 7.1.4 Use of the water area of the upper PSP (pumped storage station) and of the buffer reservoir for the purpose of recreation is forbidden. Use of the Dniester water reservoir for the purpose of recreation is possible in specially equipped places only. 7.1.5 In the course of water reservoir operation, all the participants in the water utilization system must observe the said «Regulations of the operation of reservoirs in the Dniester system of HPPs and PSPPs» in accordance with the Water Code of Ukraine, Article 77. 7.2 Water protective areas 7.2.1 The vital water protective limitations in the use of lands shall be considered the water protective zones (WPZs) and coastal protection belts (CPBs) which are designed to perform the function of a «natural buffer» between the water body and the man-made productive-economic and construction systems which produce a detrimental effect on the condition and quality of wa- ter. The regulatory and methodological framework for establishing the current water protective limitations for the use of lands consists of the following documents: the Water Code of Ukraine dd. 06.06.1995, № 213/95-ВР; The Land Code of Ukraine dd. 25.10.2001, № 2768-III; the de- cree of the Cabinet of Ministers of Ukraine of 08.05.1996, № 486 «On approval of the Procedure of determining the size and boundaries of water protective zones and the mode of economic ac- tivities in them»; State building regulations 360-92 «City development.

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Planning and development of urban and rural settlements»; Standard СОУ 00032632- 005:2009 «Land utilization. Land utilization projects related to the creation of water protective zones. Rules of development», approved by the order of the State Committee of Ukraine for Land Resources of 17.07.2009 № 375; Methodology of improving water protective zones of the rivers in Ukraine; ВБН 33-4759129-03-05-92 «Design, improvement and operation of water pro- tective zones of water reservoirs». Depending on the environmental conditions, areas with a rigid mode of economic activities and areas with partially limited economic activities can be allotted within water protective zones. The former includes wooded lands, flood reservoirs, water logged lands, increasing ravines, banks that are being worn away or sliding. The latter include cloughs and trenches, territories of possible bank or slope displacement, erosion protection slopes, flood-prone lands. 7.2.2 Any works at the water abstraction intake that can have a detrimental effect on the river are prohibited in accordance with the provisions of the Water Code of Ukraine. It is prohibited to do the following in the territory of a water protective zone: -use long-lived and potent pesticides; -locate cemeteries, animal burial sites, dumps, filtration fields; -dispose of untreated waste waters using cloughs, quarries, water streams etc. 7.2.3 Coastal protection belts – territories of limited economic activities. Coastal protection belts can be used for carrying out economic activities on condition of a mandatory meeting of requirements specified in Articles 89 and 90 of the Water Code of Ukraine. The following is forbidden in the coastal protection belts alongside rivers, around water reservoirs and in the islands: -plowing of lands (other than soil preparation for meadow formation and afforestation), fruit farming and vegetable gardening; -storage and use of pesticides and fertilizers; -arrangement of summer camps for livestock; -building of any structures (other than hydro-technical, hydrometric and linear ones), in- clusive of recreation camps, dachas, garages and parking lots; -washing and maintenance of transport vehicles and equipment; -arrangement of garbage dumps, sludge disposal facilities, liquid and solid production waste ponds, cemeteries, animal burial sites, filtration fields, etc. Facilities located in a coastal protection belt can be operated provided the conditions of the latter are not disrupted. Unserviceable structures, as well as those not meeting the prescribed management modes, shall be subject to removal from the coastal protection belts. 7.2.4 Parameters of water protection and environmental protection belts of water reservoirs in the Dniester system of HPPs and PSPPs, and the scope of measures to limit the economic ac- tivities and to create favorable operating conditions of water bodies, as well as to prevent their contamination, were specified in 1987 by the working design of water protection in the Dniester water reservoir developed by the design and research institute Ukrgiprovodkhpz by the order of the Ministry of Water Economy of Ukr.SSR dd. 03.10.1986 and the decree of the Council of Ministers of the USSR dd. 02.10.1978 № 815 «On the procedure of organizing and coordinating activities ensuring an appropriate technical condition and development of water reservoirs and on performance of these activities», and by the decree of the Council of Ministers of Ukr.SSR dd. 14.11.1978, № 529 «On measures ensuring an appropriate technical condition and develop- ment of water reservoirs», by the Water, Forestry and Land Codes of the Ukr.SSR.

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In 1992, by commission from the Dniester basin department, the Kharkiv branch of insti- tute «Soyuzdiprolisgosp» (The All-Union State design and research institute of forestry) correct- ed the parameters and scopes of works in a water protection zone (732-8-Т92; 93; 94). The working design was agreed with the Vinnitsa and Chernivtsi regional executive committees and approved for performance. In 1982 the Kharkiv branch of institute «Soyuzdiprolisgosp» (690-8-Т11) developed the project of water protection and environmental protection system of the Dniester PSP. In 1988 the detailed design documentation was prepared on protective and decorative gar- dening in the influence zone of the Dniester PSP (732-8-Т47). The design documentation as to the implementation of the WP and EPZ boundaries was agreed at the local level. Forest improvement measures designed to strengthen the banks and to stop the erosion process were carried out at the time of constructing the Dniester water reservoir. In accordance with the existing designs, the total water protection area of hydrological fa- cilities in the Dniester system of HPP and PSPP constitutes over 103 thou. hectares, including 17.5 thou. hectares – the area of coastal protective belts (Table 7.1). In case of the Dniester and the buffer water reservoir a somewhat greater area of protected water is located in the left bank. Table 7.1 – The area of water protection zone of hydrological facilities in the Dniester system of HPP and PSPP in accordance with existing design. The Dniester system of HPP and PSPP Area, hectares Total Inclusive of EPS By the administrative division The Dniester water reservoir Tchernivetska Region 41110 7738 Khmelnitska Region 48187 7420 Vinnitska Region 1467 359 Buffer water reservoir Tchernivetska Region 2550 253 Vinnitska Region 2836 413 By the position in the river basin The Dniester water reservoir Right bank 37733 7452 Left bank 53031 8065 Buffer water reservoir Right bank 2550 253 Left bank 2836 413 By the hydrological facilities The Dniester water reservoir 90764 15517 Buffer water reservoir 5386 666 PSP reservoir 7720 1360 Total in hydroelectric complex of HPP and 103870 17543 PSPP Within the limits of the water protection territories of the Dniester system of HPP and PSPP there have been identified 6 types of landscape complexes: 1 forest and sparse wood; 2 shrub vegetation; 3 meadow (grass) complexes;

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4 water complexes; 5 settled landscapes (housing development, roads, other man-made complexes); 6 agricultural landscapes (agricultural farmland). Analysis of the landscape complex transformation in the water protection zones of the Dniester system of HPP and PSPP over the last 30 years identified a number of changes that took place in that area. First and foremost, there was a redistribution of areas among the main natural complexes, namely, a significant increase (nearly by 2/3 or by 100 км2) of forest vegetation, with a simul- taneous decrease by about the same amount of the area of grass vegetation (steppe and meadow) and shrubs. That was due to both the forest improvement works done on the slopes of the Dnie- ster water reservoir at the end of the last century, and to the change in the traditional types of economic activities in the region, since discontinuation of haying contributed to over-growing of plain areas with forests. Reduction of the shrub complexes is also accounted for by the change of this kind of landscape to forests. Alongside with that, an insignificant decrease in the area of farming lands is observed– by 10 % – from 530 км2 in 1985 to 475 км2 – in 2015. During this period, the square of populated areas and corresponding infrastructure increased by 8 %. Altogether, observed over the last 30 years within the boundaries of water protection zones of the Dniester hydrological complex is a slight increase of the portion of natural land-scopes to 39 % of the total area against 36 % recorded in 1985. At the same time, one can state that the man-made changes in the territories located within the boundaries of the water protection zone of the Dniester hydrological complex decreased by 3%. 7.2.5 The most intense processes of bank alteration are observed in the vicinity of populat- ed places Voronovytsi, Neporotove, Stara Ushytsia and Korman. At the upper sections of the Dniester water reservoir (the section between the village of Ataky and the town of ) the silting of the river bed is observed due to accumulation of solid effluents in the Dniester river. 7.2.6 The transformation of landscape complexes in the coastal protection belts of the Dniester system of HPP and PSPP over the last 30 years was as follows: the area of forest vege- tation within the boundaries of specially protected territories increased by half (from 120 км2 to 180 км2); a reduction by nearly 50% of the area of shrub and grass vegetation is observed. Increase in the area of forest vegetation was due to overgrowing of ravines and stoppage of erosion processes, as well as to the natural replacement of meadow vegetation with shrubs and, eventually, with forest vegetation. As of today, within the boundaries of the coastal protection belts, i.e. the lands where any economic activity is forbidden, there are over 26 км2 of farming lands and 4.5 км2 of settled lands which is a violation of the conditions. 7.2.7 The operation service shall establish control of the operation of treatment facilities and sanitary condition of open reservoirs in the entire coastal territory of the reservoirs. The treated effluent shall be disposed of in compliance with the requirements of "The rules of pro- testing surface waters from effluent pollution". Permission to dispose of effluent can be granted only after the maximum allowable dis- posal (MAD) has been developed and approved. Permission to dispose of effluent from operat- ing enterprises in the water bodies shall remain effective for three years after which it becomes subject to renewal. For enterprises in the design stage, the permission to dispose of effluent shall be reviewed in case of changing conditions of water utilization in the section of the water body which receives the effluent from the enterprise which is being designed.

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7.2.8 During the reservoir operation (on the basis of monitoring the quality of water and its compliance with the requirements and norms) the water protection measures can change in terms of quality and quantity, be amended and specified. 7.2.9 In the territory of enterprises that have a surface runoff from the irrigated areas, the operation service should perform a rigid ongoing monitoring of a proper storage of toxic chemi- cals and fertilizers to preclude the ingress into reservoirs of effluent and surface runoff saturated with mineral and organic fertilizers, and pesticides. Disposal of untreated effluent from animal farms is forbidden. When discovering the ingress into the reservoir of pollutants from the adjacent territories, the operation service should establish the source of pollution and take measures to liquidate it. 7.2.10 As of today, the water protection measures have not been taken in full scope. The coastal protection belt has not been staked out throughout, and the breach of the economic ac- tivity conditions occurs now and again. The existing condition of the WP and EPZ demonstrates the obsolescence of the available schemes of designating water protection zones and coastal protection belts and the need to cor- rect them and agree with local self-government bodies, subsequent staking out and specifying environmental protection measures inside them. 7.3 Procedure of operating a sanitary protective zone 7.3.1 With a view to guarantee the protection of water bodies, sanitary protective zones (SPZs) are established in the vicinity of water intake facilities used for public water supply. SPZs are organized in all the intakes of public drinking water supply, irrespective of their sub- ordination. In accordance with the decree of the Cabinet of Ministers of Ukraine of 18 December, 1998, № 2024, the boundaries of the water body SPZ shall be defined by the land planning de- sign and established by the local self-government bodies in their territory by agreement with the bodies of land resources, sanitary and epidemiological inspection, environmental protection, wa- ter economy and geology. 7.3.2 SPZ of surface and ground waters are integral parts of the water protection zone, and they are divided into three belts with a special economic mode: the first belt – the rigid conditions zone, which integrates the territory of the water ab- straction location, the watercourse facilities site and the power canal; the second and the third belts – the zone of limitation and surveillance, integrate the terri- tory designed to ensure protection of water supply sources from pollution. Within the boundaries of belt, I of the SPZ the following shall be performed: - planning of the territory for the disposal of the surface runoff outside its boundaries, plant- ing of greenery, fencing and provision of permanent security or protective signaling; - buoying of the surface area or enclosure with other warning signs; - equipment of water intake facilities with fish protection devices. Forbidden in this belt is the following: - disposal of waste waters, bathing, all kinds of fishing (industrial, sport, amateur etc.), as well as fish breeding, stock watering and other types of water utilization affecting the quality of water; - presence of unauthorized persons, location of housing and public structures, organization of piers for floating craft, use of pesticides, organic and mineral fertilizers, laying of pipe-lines,

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digging of gravel and sand, dredging and other construction and erection works not directly con- nected with operation, reconstruction or expansion of water supply facilities and net-works; - principal felling operations. Within the surface area of belt II of the SPZ: The following shall be performed: - sanitary improvement of territories in the populated localities and of other facilities (sew- age, arrangement of waterproof cesspools, etc.); - bathing, tourism, water sports and fishing in allowed places only agreed with the state bodies of sanitary and epidemiological inspection; - anti-erosion measures. The following is forbidden: - location of industrial waste ponds; - location of fuel and lubricant depots; - use of chemical agents without authorization from the bodies of the state sanitary and epi- demiological inspection; - location of cemeteries, animal burial sites, clearing and filtration fields, irrigation sys- tems, underground filtration facilities, sludge collectors, trench silos, animal and fowl farms and other agricultural facilities that create the threat of a microbe contamination of water, as well as location of solid domestic waste landfills, biological and sludge ponds; - storage and use of pesticides and mineral fertilizers; - plowing of lands (other than sites for meadow formation and afforestation), fruit farming and vegetable gardening; - principal felling operations; - sand extraction and other dredging works not connected with construction and operation of water pipeline systems; - arrangement of summer camps for livestock and grazing closer than 300 m from the bank. Within the surface area of belt III of the SPZ: The following shall be performed: - administration of territory allotment for the development of populated localities, con- struction of medical and prophylactic and health institutions, transport, power, industrial and ag- ricultural facilities, as well as possible change of the production technology involving the risk of pollution of the water supply sources with waste waters; - identification of facilities polluting the water supply sources; - development of plans of implementing specific water protection measures within the timeframe agreed with the bodies of the state sanitary and epidemiological inspection and water economy at the local level; - implementation of measures related to the sanitary improvement of the territory of pop- ulated localities and other facilities (sewage, arrangement of waterproof cesspools, etc.). The following is forbidden: - disposal in the water reservoirs of waste waters not meeting the requirements of sanitary rules and norms (SanPIN 4630-88 «Protection of surface waters from pollution») and the norms of the Water Code of Ukraine.

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Responsibility for ensuring the compliance with the economic activity conditions in the belts of SPZ of centralized water supply sources and facilities shall be placed as follows: - within the boundaries of the first belt – on water supply companies; - within the boundaries of the second and the third belts – on the local bodies of executive power, on the local self-government bodies by virtue of their authority, and enterprises, organi- zations and individuals who are owners or users of land plots within the boundaries of these zones. 7.4 Fish industry 7.4.1 It is forbidden to import fish and other aquatic organisms into water reservoirs for the purpose of acclimatization and breeding unless authorized by the bodies of the state veterinary inspection. 7.4.2 The operation of the Dniester multipurpose hydraulic project has a significant im- pact on the fish fauna of the river downstream of the buffer reservoir dam. The key limiting fac- tor is low temperatures of the water. Among other factors that determine the fish population of the said area is a rock and pebble bedding, quite high flow speeds and substantial fluctuations of the water level. For this stream ecosystem to function normally, it is necessary that the water dis-charge from the buffer reservoir be close to the natural water flow so as to reduce sharp fluctuations of water levels and discharge. It is necessary to optimize the thermal condition of the water, particu- larly during the period of spring and summer (at the time of spawning). A decisive factor in creating recoverable reserves is the efficiency of fish reproduction. The most valuable commercial fishes in the Dniester reservoir belong to the phytophilous eco- logical group. The reproduction efficiency of these fishes depends on the level conditions of the reservoir which concerns primarily the early spawning kinds (pike, roach, bream and others). Due to specific features of the structure (insignificant area of shallow waters, the canyon type of the bed), there exists a perceived deficit of spawning sites for the phytophilous fish in the Dnie- ster reservoir. Unfavorable conditions for fish reproduction are becoming more pronounced as a result of releases from storage under the conditions of low water content of the river at the time of the spring ecological release of water into the Lower Dniester and into the firth. The summer release of the level (below TSS) results in dewatering of the bank slopes and islands in the Dnie- ster reservoir and promotes the development of grassland vegetation which will be flooded at the time of next year’s high water and will be used as a spawning substrate by the fish carpophyls. Under such conditions, the next year reproduction efficiency of phytophilous fish tends to be quite high, and the number of the young of the year of roach increases 4-fold, while that of bream – 17-fold. During the reservoir operation in winter, water is released from the reservoir to the mark at which the dried out storage capacity of the reservoir area should be 20 – 30% less than the pre- dicted runoff in the first ten days of April so as to prevent deficit of water. During the low water years this mark has to be at least119 m, during the years of average dryness – at least 117.5 m, while during the high-water years – 117 m. During winter period the HPP has to operate using the inflowing water. The filling up of the reservoir above the mark of 118 m during winter period is not allowed because of the possibility of destruction of the future spawning substrate. The average daily fluctuations connected with the HPP operation should not exceed 20 – 25 cm. It is recommended to maintain the water level at the mark of 121 m until the late May. During the summer period the water level should be reduced to the mark of 117 - 118 m and maintained at this level throughout summer. In this case the dried out bank slopes of the res- ervoir with the area of 1240 - 1620 hectares will grow up with grasses. They will serve as a

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spawning substrate for the next spawning period. It should be borne in mind that the level of wa- ter should not be reduced below the mark of 116 m so as not to dry out the littoral zone.

7.4.3 The use for fishery of the headwater pond PSPP and of the buffer reservoir is not en- visaged, the species composition of the fish fauna is of no commercial importance.

7.4.4 To ensure favorable conditions for the fish spawning in the lower course of the Dnie- ster, it is recommended to perform ecological release (additional release of water from the Dnie- ster reservoir) which it makes sense to perform in spring and at the dry time of the year. The be- ginning of the spring release depends on the temperature of water which induces the be-ginning of the spawning and vegetation of plants, therefore, it is necessary to take into account the rate of warming of the cold water released from the Dniester reservoir which depends on the air temper- ature and the time it takes the water to get to the estuary. In case of the main commercial fishery species in the lower course of the Dniester the mass spawning begins at the temperature above 11-12ºС (middle-end of the third ten days of April). Given the time it takes the water to get from the Dniester HPP-1 to the estuary, which constitutes approximately 5 days, it is recommended to perform the ecological release starting from April 15 - 16. The exact date is determined on the basis of the water temperature data received from the water facility at Mayaky. The duration of the release should be long enough for the juvenile fish to be able to leave the roe laid on the vegetative substrate. Taking into account the internal and inter-species di- versity of fishes, the duration of the release should be at least three weeks. Hence, the release should continue at least until May 8-10. In case of a cold weather spell, it should be extended at least till the mid-May. Under these circumstances, the high level shall be maintained till the be- ginning of the last ten days. The specific timeframe should be corrected annually in accordance with the hydro-meteorological forecasts and be agreed with the fisheries protection inspection. Another important characteristic of the release is the rate of discharge. It should guarantee at least the minimum, but sufficient water depth in the seasonally flooded lands. According to the ichthyologic research, the minimum depth required for spawning is 0.7 m, which is ensured by the discharge of at least 420-500 m3/sec. The period with a sustainable river discharge should last at least 10 days. The release should last at least till the early June. During the spring and summer period, the level of the tail water at HPP-2 (under the nor- mal hydrological conditions) should not fluctuate by more than 5 cm/hr or 20 cm/day. The ecological spring release is similar to a natural flood; therefore, it is required at low or medium water content of the river. Water release must be corrected annually, involving experts, depending on the environ- mental conditions. The amount of discharge at the time of the ecological and reproduction release depends on the reservoir storage and the inflowing discharge during this period. The timeframe of the eco- logical and reproduction release and the procedure thereof shall be agreed with the Interdepart- mental commission. 7.4.5 Taking into account the fact that water biological resources of the Dniester reservoir are protected within the boundaries of the national natural parks «Khotynsky» and «Podilski Tovtry», any economic activities in the reservoir can be carried out when authorized by the ad- ministration of environmental organizations on an area basis.

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7.4.6 When carrying out economic activities, it is necessary to bear in mind the specific features of the zone division specified in the Organization design of the environmental organiza- tions. It is proposed to exclude protected areas specified in the “Organization design” from the economic use. 7.4.7 As a special utilization of water biological resources in the territory belonging to the nature reserve fund, fish and other water biological resources can be captured for research pur- poses as per the tasks allotted to the administration of environmental institutions by the de-cision of the research and development boards of these institutions. Amateur and sport fishing on terms of a special utilization shall be allowed in accordance with the specified conditions. 7.4.8 In certain areas of the reservoir, fish and other water biological resources can be cap- tured for reclamative purposes with a view to regulate the population of certain species or to pre- vent cases of a mass fish kill or the threat of epizootic outbreaks, within the timeframe and using the fishing gear specified by the decisions of the research and development boards of environ- mental institutions. 7.4.9 Within the territorial boundaries of the natural guard fund the following is forbid- den: - movement of all the floating craft during the spawning period in places identified for the prohibition, except for the craft belonging to specially authorized bodies that protect the envi- ronment, rescue boats and special boats of the waterworks; - use of floating craft without the plate numbers on board and corresponding documents for the floating craft (other than rowing and inflatable boats); - movement and stoppage of floating craft (other than those moving along the established routes) in places where fishing is forbidden, except for the craft belonging to specially author- ized bodies that protect the environment, rescue boats and special boats of the waterworks, and with the exception of stops near the populated localities, and in emergencies (storm, fog, acci- dent, etc.); - movement of floating craft after dark (more than an hour after the sunset and more than an hour before the sunrise), except for the craft belonging to specially authorized bodies that protect the environment, rescue boats and special boats of the waterworks;

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Annex А (reference)

STATUTE ON INTERDEPARTMENTAL COMMISSION FOR AGREEIG OPERATING CONDI- TIONS OF THE DNIEPER AND THE DNIESTER WATER RESERVOIRS

Order of the State Agency of water resources, 01.11.2013, № 170 1. The interdepartmental commission charged with the task of developing the operating conditions of the Dnieper and the Dniester water reservoirs (hereinafter – the Commission) is a permanent advisory and consultative body under the State Agency for Water Resources set up in accordance with Article 16 of the Water Code of Ukraine and the Decree of the President of Ukraine of 13.04.2011, № 453 «On Regulations of the State Agency for Water Resources of Ukraine», order of the Ministry of the Environment and Natural Resources of 07.02.2012, № 46 «On approving the procedure of development and implementation of operating conditions of multi-purpose reservoirs, water management systems and canals», registered in the Ministry of Justice of Ukraine on 14.03.2012, № 393/20706, for the purpose of coordinating the is- sues related to the rational and comprehensive utilization of water resources of the Dnieper and the Dniester reservoirs, providing water for the needs of the public and of the branches of re- gional economy, taking into account the environmental requirements and needs of the partici- pants in the water management complex by way of prescribing the optimal operating conditions of water management systems and multi-purpose reservoirs. 2. In its activities the Commission shall be guided by the Constitution and laws of Ukraine, by the acts of the President of Ukraine and the resolutions of the of Ukraine, by the acts of the Cabinet of Ministers of Ukraine, other laws and regulations, and this Statute. 3. The key goals of the Commission shall be: - consider and agree draft operating conditions of the Dnieper reservoirs, major water man- agement systems in the basin of the river Dnieper and the Dniester reservoirs in accordance with the «Rules of management of the Dnieper cascade reservoirs», «Rules of management of the Dniester cascade reservoirs», and other normative documents regulating operation of the reser- voirs, water management systems and facilities; - agree operating conditions of reservoirs for the period of letting pass inundations and floods, of fish spawning and at the time of low water content; - monitor compliance of the participants in the water management system with the deci- sions of the Commission. 4. In accordance with the tasks allotted to it, the Commission shall: - resolve in a timely manner the issues arising due to a change in the water management, environmental, hydro-meteorological situation, emergency situations in the Dnieper, the Dniester and their tributaries, and in the process of water resource utilization by all the participants in the water utilization system; - consider differences between the proposals from the participants in the water utilization system concerning the issues of water utilization conditions of water bodies and take the required decisions; - make proposals to the Ministry of the environment and natural resource, to the State Agency of water resources as to the limiting of water utilization during the law water periods of the year in case of reduction of the water content and in case of emergency situations in the wa-

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ter bodies of the basins of the Dnieper and the Dniester in accordance with the priorities stipulat- ed by the rules of utilizing water reservoirs and water management systems. 5. The Commission shall have the right to: - hear at its meetings the information provided by the representatives of the bodies of ex- ecutive power and of local self-government, enterprises responsible for rational and comprehen- sive utilization of water resources of the Dnieper and the Dniester reservoirs, for providing water to the population, and the participants in the water utilization system; - receive documents and other materials required for discharging their functions from ex- ecutive power and local self-government bodies; - on agreement, attract, in accordance with the established procedure, professionals from corresponding branches of the economy, representatives of the bodies of executive power and local self-government bodies, scholars. 6. The Commission shall be headed by the Chair of the State Agency of water resources. His/her assistants shall be the first deputy Head of the Agency and deputy Head of the Agency. In the absence of the Commission head his/her duties shall be discharged by one of the deputies. 7. The Commission Head shall: - organize the work of the Commission; - convene the meetings of the Commission; - preside over the Commission meetings; - sign letters, applications and other documents prepared by the Commission as a result of its work. 8. The main format of the Commission work shall be meetings to be held as per the sched- ule, but at least once a month. The Commission meeting shall be legitimate if more than half of the Commission mem- bers are present. Proposals concerning the consideration of issues at the Commission meeting shall be made by the Commission Head and members. 9. The Commission shall discharge its functions in accordance with annual plans approved by the Commission Head. If required, depending on the specific hydro-meteorological and water management situa- tion, extraordinary meetings shall be held. 10. Decisions are made by the open vote by the majority of members present at the meet- ing. The decisions of the Commission made at its meetings shall be recorded in the minutes. Recommendations of the Commission shall be taken into consideration by the State Agen- cy for water resources when approving the utilization conditions. The minutes of a Commission meeting shall be signed by the Head or his/her deputy and the executive secretary of the Commission. 11. Correction of the operating conditions of the Dnieper and the Dniester reservoirs or water utilization systems, if required, can be made, with only those participants of the water re- sources utilization system invited whose interests are directly impacted by the change in the uti- lization conditions. Operating conditions can also be corrected in case of an abrupt change of

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hydro-meteorological conditions and water management situation, in case of emergencies in wa- ter bodies and other reasons. The interested participant of the water resource utilization system shall notify the Commis- sion Head of the need to correct conditions. The recommendations of the Commission shall be submitted to the State Agency for water resources for decision-taking concerning the correction of the conditions. Later on, the State Agency for water resources shall inform other participants of the water utilization system about the correction of the utilization conditions. 12. Questions concerning the interests of adjacent countries shall be resolved in compli- ance with the effective legislation and in accordance with intergovernmental agreements on utili- zation of trans-border waters. 13. The State Agency for water resources shall inform the public and the population about the established conditions and recommendations of the Commission via the official website. 14. In case of disagreement with the decision made, a participant in the water utilization system may express a differing view which shall be annexed to the minutes, with a correspond- ing entry made in the minutes. The decisions of the Commission that fall within its authority shall have a recommendatory nature for the participants in the water utilization system. 15. Monitoring of the implementation of decisions made by the Commission shall be per- formed by the departments of water resources, the Dnieper and the Dniester-Prut basin depart- ments of water resources of the State Agency for water resources, the State environmental in- spection, and the State emergency response service. 16. The Commission secretary shall prepare the materials required for the meetings, sum- marize the proposals, develop drafts of decisions. 17. Responsible for the development of design operating conditions of the Dnieper reser- voirs, major water utilization systems in the basin of the Dnieper river and the Dniester reser- voirs, as well as for the provision of organizational and technical and information-analytical sup- port of the Commission shall be the department of water resources utilization at the State Agency for water resources.

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Annex Б (for reference) Contour map of the Dniester river basin

77.100

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Annex В 67 (for reference) Characteristics of the natural runoff of the Dniester and its tributaries В.1 – Maximum runoff of the spring overflow in the Dniester river at level gauging sites Parameters Maximum flow, of Р % frequency: Coefficients 0,01 with Catchment Period of record Average val- Site guaran area, кm2 (years) ues over of variation, of variation, -teed 0,01 0,1 0,3 0,5 1 5 10 25 50 Cv Cv many years cor- rec- tions. 1 Parameters and estimate values of maximum water flow rate m3/s) 1881-2013, town of Galytch 14700 857 0.52 4C 6050 5350 3710 3060 2780 2430 1690 1410 1040 755 n=133 v 1881-2013, town of Zalishchyky 24600 1170 0.54 4Cv 8720 7700 5290 4330 3920 3410 2350 1940 1420 1020 n=133 1881-2013, Vil. Zhvanets 34300 1260 0.53 4Cv 9130 8070 5570 4570 4150 3620 2510 2080 1530 1100 n=133 Dniester multipurpose hy- 40500 - - - - 9400 8340 5760 4730 4290 3740 2590 2150 1585 1145 draulic project site 1881-2013, City of Mogyliv-Podilsky 43000 1320 0.53 4C 9580 8470 5850 4800 4350 3800 2630 2180 1610 1160 n=133 v 1881-2013, City of Kamyanka 49000 1385 0.51 4Cv 9510 8420 5870 4850 4410 3870 2710 2260 1680 1220 n=133 2 Parameters and estimate values of aggregate runoff (km3) 1881-2013, t.Galych 14700 1.34 0.45 2C - 4.82 4.01 3.60 3.40 3.14 2.47 2.16 1.69 1.25 n=133 v 1881-2013, t.Zalischyky 24600 1.66 0.47 2C - 6.21 5.14 4.6 4.34 3.99 3.12 2.71 2.10 1.54 n=133 v 1881-2013, v.Zhvanets 34300 1.89 0.47 2C - 7.12 5.89 5.27 4.97 4.57 3.57 3.10 2.40 1.76 n=133 v Dniester multipurpose hy- 40500 - - - - - 7.87 6.51 5.82 5.49 5.05 3.95 3.42 2.66 1.95 draulic project site

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1881-2013, 68 City of Mogyliv-Podilsky 43000 2.17 0.47 2C - 8.11 6.71 6.00 5.66 5.21 4.07 3.53 2.74 2.01 n=133 v 1881-2013, t.Kamianka 49000 2.36 0.47 2C - 8.84 7.31 6.54 6.17 5.67 4.43 3.85 2.98 2.19 n=133 v

В.2 - Maximum rainfall runoff in the Dniester river at gaging sites

Parameters Maximum runoff with flow probability, Р %: Coefficients Catchment Period of record Average val- 0,01 Site of varia- area, кm2 (years) ues over many of variation, with guar- tion, 0,01 0,1 0,3 0,5 1 5 10 25 50 years Cv anteed cor- Cv rections 1 Parameters and estimate values of maximum water flow rate m3/s)

t.Galych 14700 1881-2013, n=133 1330 0.66 4Cv - 11600 7540 6010 5370 4560 2960 2370 1650 1110 1881-1969, n=89, design, reduced to 1580 0.62 4Cv 13250 12550 8320 6680 6000 5140 3400 2750 1950 1330 t.Zalischyky 24600 period of 130 years (de- sign data) 1881-2013, n=133 1690 0,66 4Cv 15440 14600 9530 7600 6790 5770 3740 2990 2080 1400

v.Zhvanets 34300 1881-2013, n=133 1610 0.65 4Cv 14380 13600 8930 7130 6380 5430 3540 2840 1980 1340 t. Mogyliv- 43000 1881-2013, n=133 1560 0.64 4Cv 13740 13000 8530 6830 6110 5210 3420 2740 1930 1310 Podilsky

t.Kamianka 49000 1881-2014, n=133 1550 0.63 4Cv 13310 12600 8290 6640 5960 5090 3350 2700 1910 1300

t.Bendery 66100 1881-2013, n=133 1080 0.57 4Cv 8050 7640 5170 4200 3790 3280 2230 1820 1320 931 2 Parameters and estimate values of aggregate runoff (km3)

t.Galych 14700 1881-2013, n=133 0.56 0.77 4Cv - 6.02 3.77 294 2.60 2.17 1.34 1.04 0.69 044

t.Zalischyky 24600 1881-2014, n=133 0.82 0.67 4Cv - 7.27 4.73 3.76 3.35 2.84 1.84 1.46 1.02 0..68

v.Zhvanets 34300 1881-2013, n=133 0.86 0.67 4Cv 7.63 4.96 3.94 3.52 2.98 1.93 1.54 1.07 0.71 Dniester hy- 40500 - - - - 7.75 5.04 4.01 3.57 3.03 1.96 1.56 1.08 0.72 dro-system site

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Parameters 69 Maximum runoff with flow probability, Р %: Coefficients Catchment Period of record Average val- 0,01 Site of varia- area, кm2 (years) ues over many of variation, with guar- tion, 0,01 0,1 0,3 0,5 1 5 10 25 50 years Cv anteed cor- Cv rections t. Mohyliv- 43000 1881-2013, n=133 0.885 0.67 4C - 7.83 5.09 4.05 3.61 3.06 1.98 1.58 1.09 0.73 Podilsky v t.Kamianka 49000 1881-2004, n=133 0.92 0.66 4Cv - 7.94 5.18 4.13 3.69 3.13 2.03 1.62 1.13 0.76

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70

В.3 – Parameters and estimate values of maximum runoff during spring overflow with various probability

Average water Estimate values Qmax (m3/s), Catchment Runoff period of rec- Coefficients Monitoring flow rate over with exceedance probability Р %: River area, ord point 2 many years of variaton, of asymmetry, F км (years) 3 0,5 1 2 3 5 10 25 Qomax, m /s Cv Cs 1 Nichlava v.Strilkovtsi 584 1955-2013 (n=54) 11.4 1.05 3 Cv 70.3 58.3 52.0 41.1 33.9 25.0 14.7 1.1 Nichlava mouth 871 - 15.4 - - 94.9 78.7 70.2 55.5 45.8 33.8 19.8 2 Zbrutch 1972-2013 (n=40) v.Zavallia 3240 48.6 0.77 3 C 217 186 165 140 120 94.3 62.2 1957-2013 (n=55) v 2.1 Zbrutch mouth 3330 - 49.6 - - 221 190 168 143 122 96.2 63.4 3 Zhvanchyk 1936-1939, v.Lastivtsi 703 15.6 1.20 3 C 111 90.4 80.0 62.1 50.3 35.9 19.8 1954-2013 (n=59) v 3.1 Zhvanchyk mouth 769 - 16.7 - - 119 96.7 85.6 66.4 53.8 38.4 21.2 4 Smotrych v.Tsybulivka 1790 1931-2013 (n=79) 57.8 1.30 3 Cv 448 362 300 243 195 136 72,3 4.1 Smotrych mouth 1800 - 58,0 - - 450 363 301 244 196 137 72,6 5 Muksha с. Mala Slobodka 302 1954-2013 (n=52) 7.15 1.21 3 Cv 51.2 41.7 36.0 28.6 23.1 16.5 9.07 5.1 Muksha mouth 336 - 7.72 - - 55.3 45.0 38.9 30.9 24.9 17.8 9.80 6 Studenytsia* v.Golozubyntsi 296 1971-2013 (n=37) 10.2 - - 112.5 88.0 66.0 52.5 38.0 23.5 11.5 6.1Studenytsia mouth 477 - 14.6 - - 161 126 34.4 75.1 54.3 33.6 16.4 7 Ushytsia v.Tymkiv 1150 1972-2013 (n=37) 50.3 1.27 3 Cv 380 307 250 208 167 118 63.1 7.1 Ushytsia mouth 1420 - 58.9 - - 445 359 293 244 196 138 73.9 8 Kalyus* t. Nova Ushytsia 259 1951-2013 (n=55) 19.6 - - 111 104 95.0 89.0 80.5 65.8 25.0 8.1 Kalyus mouth 390 - 26.6 - - 151 141 129 121 109 89.5 34.0 9 Batig (right tributary v.Zamihiv 94.1 1947-1988 (n=42) 22.5 0.77 3 C 83.8 76.1 70.0 63.0 56.4 46.6 32.0 of the river v Zhvan) N o t e -* - Estimate values of the maximum water runoff were obtained using the summary integrated curves of probability

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71 В.4 – Parameters and estimate values of maximum runoff during spring overflow with various probability Average water Estimate values Qmax (m3/s), Catchment Runoff period of rec- Coefficients Monitoring flow rate over with exceedance probability Р %: River area, ord point many years of variaton, of asymmetry, 2 3 F км (years) Qomax, m /s Cv Cs 0,5 1 2 3 5 10 25

1 Nichlava v.Strilkovtsi 584 1955-2013 (n=54) 10.3 2,0 3 Cv 139 107 80.0 63.9 43.3 20.8 7.22 1.1 Nichlava mouth 871 - 12.6 - - 170 131 97.7 80.0 52.8 25.4 8.81 1972-2013 (n=40) 2 Zbrutch v.Zavallia 3240 32.0 0.70 6 C 140 116 95.0 83.3 70.5 55.4 38.4 1957-2013 (n=55) v 2.1 Zbrutch mouth 3330 - 32.5 - - 142 118 96.3 84.4 71.5 56.2 38.9 1936-1939, 3 Zhvanchyk v.Lastivtsi 703 11.7 1,95 6 C 137 101 75.0 57.9 43.0 27.2 12.5 1954-2013 (n=59) v 3.1 Zhvanchyk mouth 769 - 12.2 - - 143 106 78.4 60.6 45.0 28.5 13.1 4 Smotrych v.Tsybulivka 1790 1931-2013 (n=79) 20.9 0,97 3 Cv 121 102 85.0 74.8 61.2 44.3 25.0 4.1 Smotrych mouth 1800 - 21.0 - - 121 102 85.2 75.0 61.4 44.4 25.1 5 Muksha с. Mala Slobodka 302 1954-2013 (n=52) 7.39 2.0 6 Cv 101 77.0 60.0 45.8 29.9 13.6 5.17 5.1 Muksha mouth 336 - 7.79 - - 107 81.2 63.3 48.3 31.5 14.3 5.45 6 Studenytsia* v.Golozubyntsi 296 1971-2013 (n=37) 8.33 1.85 4 Cv 166 71.4 60.0 42.4 31.8 20.2 9.08 6.1Studenytsia mouth 477 - 10.6 - - 211 90.7 76.2 53.8 40.4 25.7 11.5 7 Ushytsia v.Tymkiv 1150 1972-2013 (n=37) 25.4 - - 113 110 98.0 90.0 79.0 63.0 35.0 7.1 Ushytsia mouth 1420 - 28.2 - - 132 129 115 105 92.4 73.7 41.0 8 Kalyus* t.Nova Ushytsia 259 1951-2013 (n=55) 13.9 - - 149 133 116 104 86.0 55.0 7.50 8.1 Kalyus mouth 390 - 17.1 - - 183 164 143 128 106 67.7 9.23 9 Batig (right tributary v.Zamihiv 94.1 1947-1988 (n=42) 30.4 2.0 4 C 373 279 230 162 120 74.4 31.9 of the river v Zhvan) N o t e - * - Estimate values of the maximum water runoff were obtained using the summary integrated curves of probability

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72

В.5 - Minimum average monthly and average daily runoff in the Dniester river (natural conditions), m3/s

Monitoring point, Summer and autumn period Winter period area of water ab- Characteristic straction surface Р=75 % Р=90 % Р=95 % Р=75 % Р=90 % Р=95 % (km2) Average 58.5 49.0 42.5 56.5 40.0 31.5 t. Zalischyky, monthly F=24600 km 2 daily 43.0 33.5 30.0 19.0 15.0 13.0 Average 74.5 63.0 55.0 70.0 49.0 42.5 v.Zhvanets monthly F=34300 km 2 daily 58.0 46.0 38.5 22.5 17.0 14.0 Dniester multipur- Average 85.5 67.5 59.5 84.0 58.0 47.5 pose hydraulic pro- monthly ject site, F=40500 daily km2 70.5 55.0 48.5 31.5 23.0 18.0 Average м. Mohuliv- 103 81.5 72.5 92.5 64.0 52.5 Podilskiy monthly F=43600 km 2 daily 75.0 62.0 52.0 37.0 28.0 19.5 Average 116 89.5 82.5 117 87.5 65.0 t.Kamianka monthly F=49000 km2 daily 91.5 78.0 62.5 61.5 47.0 30.0

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Annex Г (for reference) Diagram of the Dniester system of HPP and PSPP

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Annex Д (for reference) Curves of the Dniester reservoir storage capacity and surface area Interpolation table of coordinates

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Annex Д continued

1 Об’єми, млн.м3 Відмітки, Частки метра м БС 0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 69,0 0,006 0,023 0,041 0,058 0,076 0,093 0,11 0,13 0,15 0,16 70,0 0,18 0,25 0,32 0,38 0,45 0,52 0,59 0,66 0,72 0,79 71,0 0,86 1,00 1,15 1,29 1,43 1,58 1,72 1,86 2,00 2,15 72,0 2,29 2,48 2,66 2,85 3,03 3,22 3,40 3,59 3,77 3,96 73,0 4,14 4,37 4,61 4,84 5,07 5,31 5,54 5,77 6,00 6,24 74,0 6,47 6,76 7,05 7,35 7,64 7,93 8,22 8,51 8,81 9,10 75,0 9,39 9,75 10,1 10,5 10,8 11,2 11,6 11,9 12,3 12,6 76,0 13,0 13,4 13,9 14,3 14,7 15,2 15,6 16,0 16,4 16,9 77,0 17,3 17,8 18,3 18,9 19,4 19,9 20,4 20,9 21,5 22,0 78,0 22,5 23,1 23,7 24,3 24,9 25,6 26,2 26,8 27,4 28,0 79,0 28,6 29,3 30,0 30,7 31,4 32,2 32,9 33,6 34,3 35,0 80,0 35,7 36,5 37,3 38,2 39,0 39,8 40,6 41,4 42,3 43,1 81,0 43,9 44,8 45,8 46,7 47,7 48,6 49,5 50,5 51,4 52,4 82,0 53,3 54,4 55,4 56,5 57,6 58,7 59,7 60,8 61,9 62,9 83,0 64,0 65,2 66,4 67,6 68,8 70,0 71,2 72,4 73,6 74,8 84,0 76,0 77,3 78,7 80,0 81,4 82,7 84,0 85,4 86,7 88,1 85,0 89,4 90,9 92,4 93,9 95,4 96,9 98,3 99,8 101 103 86,0 104 106 108 109 111 113 114 116 118 119 87,0 121 123 124 126 128 130 132 133 135 137 88,0 139 141 143 145 147 149 151 153 155 157 89,0 159 161 163 166 168 170 172 174 177 179 90,0 181 184 186 189 191 194 196 199 201 204 91,0 206 209 212 214 217 220 223 225 228 231 92,0 234 237 240 243 246 249 252 255 258 261 93,0 264 267 270 274 277 280 283 287 290 293 94,0 297 300 304 307 311 315 318 322 326 329 95,0 333 337 341 345 349 353 357 361 365 369 96,0 373 377 382 386 391 395 400 404 409 413 97,0 418 423 429 434 439 445 450 456 461 466 98,0 472 477 483 489 494 500 506 511 517 523 99,0 529 534 540 546 552 558 564 570 576 582 100,0 588 594 601 607 613 619 625 632 638 644 101,0 650 657 663 670 676 683 690 696 703 709 102,0 716 722 729 736 743 750 756 763 770 777 103,0 784 791 798 805 812 819 826 833 840 847 104,0 854 861 869 876 883 891 898 905 912 920 105,0 927 935 942 950 957 965 973 980 988 995 106,0 1003 1011 1019 1027 1035 1043 1050 1058 1066 1074 107,0 1082 1090 1098 1106 1114 1123 1131 1139 1147 1155 108,0 1163 1172 1180 1189 1197 1206 1214 1223 1231 1240 109,0 1248 1257 1266 1274 1283 1292 1301 1310 1318 1327 110,0 1336 1345 1354 1363 1372 1381 1390 1399 1408 1417 111,0 1426 1435 1445 1454 1463 1473 1482 1491 1500 1510 112,0 1519 1529 1538 1548 1557 1567 1577 1586 1596 1605 113,0 1615 1625 1635 1645 1655 1665 1674 1684 1694 1704 114,0 1714 1724 1735 1745 1755 1766 1776 1786 1796 1807 115,0 1817 1828 1838 1849 1860 1871 1881 1892 1903 1913 116,0 1924 1935 1946 1957 1968 1980 1991 2002 2013 2024 117,0 2035 2047 2058 2070 2081 2093 2104 2116 2127 2139 118,0 2150 2162 2174 2186 2198 2210 2221 2233 2245 2257 119,0 2269 2294 2320 2345 2371 2396 2421 2447 2472 2498 120,0 2523 2536 2550 2563 2577 2590 2603 2617 2630 2644 121,0 2657 2671 2685 2698 2712 2726 2740 2754 2767 2781 122,0 2795 2809 2823 2837 2851 2866 2880 2894 2908 2922 123,0 2936 2950 2965 2979 2994 3008 3022 3037 3051 3066 124,0 3080 3095 3109 3124 3139 3154 3168 3183 3198 3212 125,0 3227

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Annex Д continued

2 Площі дзеркала , км2 Відмітки, Частки метра м БС 0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 69,0 0,015 0,029 0,042 0,056 0,069 0,083 0,096 0,11 0,12 0,14 70,0 0,15 0,25 0,35 0,46 0,56 0,66 0,76 0,86 0,97 1,07 71,0 1,17 1,22 1,27 1,31 1,36 1,41 1,46 1,51 1,55 1,60 72,0 1,65 1,69 1,73 1,78 1,82 1,86 1,90 1,94 1,99 2,03 73,0 2,07 2,12 2,18 2,23 2,29 2,34 2,39 2,45 2,50 2,56 74,0 2,61 2,67 2,74 2,80 2,86 2,93 2,99 3,05 3,11 3,18 75,0 3,24 3,31 3,38 3,45 3,52 3,60 3,67 3,74 3,81 3,88 76,0 3,95 4,03 4,11 4,19 4,27 4,35 4,42 4,50 4,58 4,66 77,0 4,74 4,83 4,91 5,00 5,09 5,18 5,26 5,35 5,44 5,52 78,0 5,61 5,71 5,80 5,90 5,99 6,09 6,19 6,28 6,38 6,47 79,0 6,57 6,68 6,79 6,90 7,01 7,12 7,23 7,34 7,45 7,56 80,0 7,67 7,79 7,91 8,03 8,15 8,27 8,38 8,50 8,62 8,74 81,0 8,86 8,97 9,09 9,20 9,32 9,43 9,54 9,66 9,77 9,89 82,0 10,0 10,1 10,3 10,4 10,5 10,7 10,8 10,9 11,0 11,2 83,0 11,3 11,4 11,6 11,7 11,9 12,0 12,1 12,3 12,4 12,6 84,0 12,7 12,8 13,0 13,1 13,3 13,4 13,5 13,7 13,8 14,0 85,0 14,1 14,3 14,4 14,6 14,7 14,9 15,1 15,2 15,4 15,5 86,0 15,7 15,9 16,0 16,2 16,3 16,5 16,6 16,8 16,9 17,1 87,0 17,2 17,4 17,5 17,7 17,9 18,1 18,2 18,4 18,6 18,7 88,0 18,9 19,1 19,3 19,6 19,8 20,0 20,2 20,4 20,7 20,9 89,0 21,1 21,4 21,6 21,9 22,1 22,4 22,6 22,9 23,1 23,4 90,0 23,6 23,9 24,1 24,4 24,7 25,0 25,2 25,5 25,8 26,0 91,0 26,3 26,6 26,8 27,1 27,3 27,6 27,8 28,1 28,3 28,6 92,0 28,8 29,1 29,3 29,6 29,8 30,1 30,4 30,6 30,9 31,1 93,0 31,4 31,7 32,0 32,3 32,6 32,9 33,1 33,4 33,7 34,0 94,0 34,3 34,7 35,1 35,4 35,8 36,2 36,6 37,0 37,3 37,7 95,0 38,1 38,5 38,9 39,4 39,8 40,2 40,6 41,0 41,5 41,9 96,0 42,3 42,9 43,5 44,1 44,7 45,3 45,9 46,5 47,1 47,7 97,0 48,3 49,0 49,7 50,5 51,2 51,9 52,6 53,3 54,1 54,8 98,0 55,5 55,8 56,0 56,3 56,6 56,9 57,1 57,4 57,7 57,9 99,0 58,2 58,5 58,7 59,0 59,3 59,6 59,8 60,1 60,4 60,6 100,0 60,9 61,2 61,5 61,8 62,1 62,4 62,6 62,9 63,2 63,5 101,0 63,8 64,1 64,3 64,6 64,9 65,2 65,4 65,7 66,0 66,2 102,0 66,5 66,8 67,0 67,3 67,6 67,9 68,1 68,4 68,7 68,9 103,0 69,2 69,5 69,7 70,0 70,2 70,5 70,8 71,0 71,3 71,5 104,0 71,8 72,1 72,3 72,6 72,9 73,2 73,4 73,7 74,0 74,2 105,0 74,5 74,8 75,1 75,3 75,6 75,9 76,2 76,5 76,7 77,0 106,0 77,3 77,6 77,9 78,1 78,4 78,7 79,0 79,3 79,5 79,8 107,0 80,1 80,4 80,7 81,0 81,3 81,6 81,8 82,1 82,4 82,7 108,0 83 83,4 83,7 84,1 84,5 84,9 85,2 85,6 86,0 86,3 109,0 86,7 87,0 87,2 87,5 87,7 88,0 88,2 88,5 88,7 89,0 110,0 89,2 89,5 89,7 90,0 90,2 90,5 90,7 91,0 91,2 91,5 111,0 91,7 92,0 92,2 92,5 92,8 93,1 93,3 93,6 93,9 94,1 112,0 94,4 94,7 95,0 95,3 95,6 96,0 96,3 96,6 96,9 97,2 113,0 97,5 97,9 98,2 98,6 98,9 99,3 99,6 100 100 101 114,0 101 101 102 102 103 103 103 104 104 105 115,0 105 105 106 106 107 107 107 108 108 109 116,0 109 109 110 110 111 111 111 112 112 113 117,0 113 113 114 114 115 115 115 116 116 117 118,0 117 117 118 118 119 119 119 120 120 121 119,0 121 122 123 125 126 127 128 129 131 132 120,0 133 133 134 134 134 135 135 135 135 136 121,0 136 136 137 137 137 138 138 138 138 139 122,0 139 139 140 140 140 141 141 141 141 142 123,0 142 142 143 143 144 144 144 145 145 146 124,0 146 146 146 147 147 147 147 147 148 148 125,0 148

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Annex Е (for reference) Curves of storage capacity and surface area of the downstream (buffer) reservoir of the Dniester PSPP

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Annex Ж (for reference) Curves of storage capacity and surface area of the headwater pond of the Dniester PSPP

м

м

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Annex К (for reference) Operational performance of hydro-turbine units at the Dniester HPP-1

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Annex Л (for reference) Operational performance of hydro-turbine units at the Dniester HPP-2

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81 Annex М (for reference) Operational performance of turbine pump of The Dniester PSPP

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82 Annex М continued

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Annex Н 83 (for reference) Characteristics of operating conditions of the Dniester PSPP during the period of summer and autumn at average daily release of 108 m3/s, 213 m3/s, 281 m3/s

Indicator value at average daily release with probability Indicator 90 % 50 % 25 % Q = 108 m3/s Q = 213 m3/s Q = 281 m3/s 1 Downstream (buffer) reservoir of the PSP 1.1 Pump mode: – level at the beginning of the PSP operation, m; 77.1 77.1 77.1 – Storage capacity of reservoir at the beginning of 3 the PSP operation, mln.m ; 58.10 58.10 58.10 – Duration of PSP operation, hrs; 4.71 4.46 4.33 3 – Amount of water abstracted for PSP, mln.m ; 29.97 28.38 27.42 – Reservoir inflow through HPP -1 over the peri- 3 od of the PSPP operation, mln.m ; 0 0 0 3 – Release through HPP-2, mln.m ; 1.83 3.42 4.38 – Storage capacity of reservoir at the end of the 3 PSPP operation, mln.m ; 26.30 26.30 26.30 – Level at the end of the PSPP operation, m; 72.0 72.0 72.0 1.2 Period prior to beginning of operation of HPP-1 and PSPP in the turbine mode: – duration, hours; 13.29 13.54 13.67 – Amount of water released through the turbines 3 of HPP-2, mln.m ; 5.17 10.38 13.83 – Storage capacity of reservoir at the end of the period 21.13 15.92 12.47 1.3 Turbine mode: –Storage capacity of reservoir at the beginning of 3 the PSPP and HPP -1 operation, mln.m ; 21.13 15.92 12.47 – Level at the beginning of the PSPP and HPP- 1 operation, m; 71.00 69.92 69.15 – Duration of PSPP and HPP-1 operation, hours: HPP -1; 6.00 6.00 6.00 PSPP 4.35 4.12 4.00 – Reservoir inflow, mln.m3: through HPP -1; 9.33 18.40 24.28

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Indicator value at average daily release with 84 probability Indicator 90 % 50 % 25 % Q = 108 m3/s Q = 213 m3/s Q = 281 m3/s Through PSPP; 29.97 28.38 27.42 3 Release through HPP-2, mln.m 2.33 4.60 6.07 – Storage capacity of reservoir at the end of the 3 PSPP and HPP -1 operation, mln.m ; 58.10 58.10 58.10 – Level at the end of the PSPP and HPP – 1 op- eration, m 77.1 77.1 77.1 2 Headwater pond of the PSPP 2.1 Pump mode: – level at the beginning of operation, m; 216.81 27.57 218.01 – Storage capacity at the beginning of the PSPP 3 operation, mln. m ; 11.46 13.05 14.01 – Duration of the PSPP operation, hours; 4.71 4.46 4.33 3 – Admission volume, mln.m ; 29.97 28.38 27.42 – Storage capacity at the end of the PSPP opera- 3 tion, mln.m ; 41.43 41.43 41.43 – Level at the end of the PSPP operation, m 229.5 229.5 229.5 2.2 Turbine mode: – Level at the beginning of the PSPP operation, m; 229.5 229.5 229.5 – Storage capacity of the reservoir at the begin- 3 ning of operation, mln.m ; 41.43 41.43 41.43 – Duration of the PSPP operation, hours; 4.35 4.12 4.00 3 – Amount of reservoir depletion, mln.m ; 29.97 28.38 27.42 – Storage capacity at the end of operation, 3 mln.m ; 11.46 13.05 14.01 – Level at the end of operation, m; 216.81 217.57 218.01 3 – Reserve capacity, mln.m 2.73 4.32 5.28

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732-39-Т48 83 Зм. Кіл. Аркуш №toк Підп. Дата 85

Annex П (for reference) Water energy indicators of the Dniester PSPP when operating during the period of summer and autumn, at average daily release of 108 m3/s, 213 m3/s, 281 m3/s Indicator value at average daily release with probability Indicator 90% 50 % 25 % Q = 108 m3/s Q = 213 m3/s Q = 281 m3/s 1 Turbine mode 1.1 Operation duration, hours; 4.35 4.12 4.00 1.2 Depletion amount, mln.m3; 29.97 28.38 27.42 1.3 Average capacity, MW 2480 2498 2499 1.4 Electric power generation during one daily cycle, mln. kWhr 10.790 10.294 9.996 2 Pump mode 2.1 Operation duration, hours; 4.71 4.46 4.33 2.2 Amount of pumped water, mln.m3; 29.97 28.38 27.42 2.3 Average consumption, MW 2912 2913 2905 2.4 Electric power consumption for pump- ing during one daily cycle, mln. kW·hrs 13.717 12.992 12.579 3 PSPP efficiency 0.787 0.792 0.795 4 Amount of water to generate one kilowatt- hour of power, m3/kW·hrs 2.778 2.757 2.743 5 Power consumption to pump one cubic me- ter of water into the headwater pond, kW·hr/m3 0.458 0.458 0.459

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732-39-Т48 84 Зм. Кіл. Аркуш №toк Підп. Дата 86

Annex Р (for reference) Characteristics of operating conditions of the Dniester PSPP during winter period, at average daily release of 115 and 180 m3/s Indicator value at average daily release Indicator 115 m3/s 180 m3/s 1 Downstream (buffer) pond of the PSPP 1.1 Pump mode: – level at the beginning of the PSPP operation, m; 77.10 77.10 – Storage capacity of reservoir at the beginning 3 of the PSPP operation, mln.m ; 58.10 58.10 – Duration of PSPP operation, hrs; 4.70 4.54 3 – Amount of water abstracted for PSPP, mln.m ; 29.85 28.85 – Reservoir inflow through HPP -1 over the pe- 3 riod of the PSPP operation, mln.m ; 0 0 3 – Release through HPP-2, mln.m ; 1.95 2.95 – Storage capacity of reservoir at the end of op- 3 eration, mln.m ; 26.30 26.30 – Level at the end of the PSPP operation, m 72.0 72.0 1.2 Period prior to the beginning of the PSPP operation in the turbine mode: – duration, hours; 13.30 13.46 – Amount of water released through turbines of 3 HPP -2, mln.m ; 5.51 8.72 – Storage capacity of reservoir at the end of the period 20.79 17.58 1.3 Turbine mode: – Storage capacity of reservoir at the beginning 3 of the PSPP operation, mln.m ; 20.79 17.58 – Level at the beginning of the PSPP operation, m; 70.94 70.27 – Duration of operation, hours: PSPP; 6.00 6.00 HPP-1 4.33 4.18 – Reservoir inflow, mln.m3: through the PSPP; 9.94 15.55 through HPP -1; 29.85 28.85 – Release through HPP -2 during one hour of the 3 PSPP and HPP-1 operation, mln. m ; 2.48 3.88 – Storage capacity of reservoir at the end of 58.10 58.10

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Indicator value at average daily release Indicator 115 m3/s 180 m3/s PSPP and HPP-1 operation, mln.m3; – Level at the end of PSPP and HPP-1 operation, m 77.10 77.10 2 Headwater pond of the PSPP 2.1 Pump mode: – level at the beginning of the operation, m; 216.96 217.29 – Storage capacity at the beginning of PSPP op- 3 eration, mln. m ; 11.58 12.58 – Duration of PSPP operation, hours; 4.70 4.54 3 – Reservoir inflow, mln.m ; 29.85 28.85 – Storage capacity at the end of PSPP operation, 3 mln.m ; 41.43 41.43 – Level at the end of PSPP operation, m 229.5 229.5 2.2 Turbine mode: – level at the beginning of the operation, m; 41, 229.543 41, 229.543 – Storage capacity of reservoir at the beginning 3 of the PSPP operation, mln.m ; 41.43 41.43 – Duration of PSPP operation, hours; 4.33 4.18 3 – Amount of reservoir depletion, mln.m ; 29.85 28.85 – Storage capacity at the end of operation, 3 mln.m ; 11.58 12.58 – Level at the end of operation, m; 216.96 217.29 – Induced surcharge storage capacity (remaining usable storage capacity 32,7 mln.m3 in the dam toe between the level at the end of operation and 2.85 3.85 the operator’s workstation (OWS) = 215,50 m)

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Annex С (for reference) Water energy indicators of the Dniester PSPP during winter operation, at re-lease of 115 and 180 m3/s

Indicator value at average daily release Indicator 115 m3/s 180 m3/s 1 Turbine mode 1.1 Duration of operation, hours; 4.33 4.18 1.2 Amount of depletion, mln.m3; 29.85 28.85 1.3 Average power capacity, MW; 2482 2493 1.4 Electric power generation during one daily cycle, mln. kWhr 10.747 10.421 2 Pump mode 2.1 Duration of operation, hours; 4.70 4.54 2.2 Amount of water pumped in, mln.m3; 29.85 28.85 2.3 Average consumption, MW; 2913 2909 2.4 Electric power consumption for pumping in during one daily cycle, mln. kW·hr 13.689 13.208 3 PSPP efficiency 0.785 0.789 4 Amount of water consumed for generation of one kilowatt-hour of electric power, m3/kW·hr 2.778 2.768 5 Electric power consumption for pumping one cubic meter of water into the headwater pond, kW·hr/m3 0.459 0.458

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732-39-Т48 87 Зм. Кіл. Аркуш №toк Підп. Дата 89

Annex Т (for reference) Discharge capacity curves of the Dniester hydro-system facilities

тис.м3

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Annex У (for reference) Discharge curves for the Dniester hydro-system downstream race

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Annex Ф 91 (for reference) Estimate rainfall flood profiles of the river Dniester at Zalishchyky water level gauge

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Annex Х 92 (for reference) Curves of the Dniester reservoir free surface at the time of floods with various frequency. Free surface curves’ coordinates s

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Annex Х continued 93

Distance from estuary, Maximum levels (m) in case of floods with exceedance probability km ## Name of site 0.01 % 0.1 % 0.5 % 1 % 2 % 10 % (Q=2600 (Q=13260 m3/s) (Q=8320 m3/s) (Q=5550 m3/s) (Q=2600 m3/s) (Q=2600 m3/s) m3/s) Dam of the Dniester multi- 677 125.00 125.00 124.20 123.00 0 purpose hydraulic project 125.00 125.00 1 vil. Loyevtsi 707 125.06 125.02 125.01 125.00 124.21 123.00 2 vil. Durniakovtsi 726 125.16 125.06 125.02 125.01 124.22 123.00 3 vil. Vilyamovka 740 125.27 125.10 125.04 125.02 124.22 123.01 4 vil. Luka 761 125.41 125.17 125.07 125.04 124.23 123.02 5 vil. Ustia 785 125.72 125.29 125.13 125.06 124.25 123.03 6 800 km 800 126.15 125.48 125.22 125.10 124.28 123.06 7 816 km 816 126.87 125.80 125.36 125.17 124.36 123.12 8 825 km 825 127.42 126.06 125.50 125.22 124.42 123.16 9 Level gauge Zalishchyky 832 128.20 126.48 125.73 125.34 124.52 123.24 10 841 km 841 129.26 127.13 126.13 125.55 124.76 123.40 11 vil. Trubchyn 849 130.88 128.34 126.96 126.12 125.34 123.88 12 vil. Vilkhovtsi 865 134,02 130,90 129,08 127,92 127,12 125,67 13 vil.Ust-Yepiskopske 875 136,90 133,49 131,52 130,60 130,10 128,20 14 vil. Horoshovo 886 140,68 136,90 134,90 134,20 133,60 131,60

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732-39-Т48 92 Зм. Кіл. Аркуш №toк Підп. Дата 94

Annex Ц (for reference) Diagrams of various frequency flood routing with considering Zalishchyky station forecast

20 % 5 % 50 % 10 % 1 % 6

Q приплива = 5140 м3/с 5

Ви 4 тр

ат 3 Q приплива = 3400 м /с и во 3 Q приплива = 2750 м3/с ди Q скида = 2600 м3/с , Q приплива = 2130 м3/с 3 ти Q скида = 2200 м /с

2 с. Q скида = 1875 м3/с 3 м / Q скида = 1565 м3/с Q приплива = 1330 м3/с с

3 Q скида = 1165 м /с 1

0

Час- toбу Час- toбу Час- toбу Час- toбу Час- toбу

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Annex Ш (for reference) Curve of the buffer hydro-system discharge capacity

м

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Annex Щ (for reference) Curve of the buffer hydro-system downstream race discharge

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Annex Ю (for reference) The Dniester PSPP water energy indicators during floods of 1-10% frequency

Indicator Indicator value 1 Turbine mode 1.1 Installed capacity, MW; 2466 1.2 Operation duration, hours; 4.63 1.3 Depletion amount, mln.m3; 31.92 1.4 Electric power generated during one daily cy- cle, mln.kW·hr 11.418 2 Pump mode 2.1 Installed capacity, MW; 2910 2.2 Operation duration, hours; 5.00 2.3 Amount of water pumped in, mln.m3; 31.92 2.4 Electric power consumption for pumping in during one daily cycle, mln.kW·hr 14.551 3 PSPP efficiency 0.785 4 Amount of water for generation of one kilowatt- hour of electric power, m3/kW·hr 2.796 5 Electric power consumption for pumping one cu- bic meter of water into the headwater pond, kW·hr/m3 0.456

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Annex Я (for reference) Curves of the buffer reservoir free surface during floods with various frequency. Free surface curves’ coordinates

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Annex Я continued

Distance Water levels (m) during floods with exceedance probability from the ## Name of site Dniester 0.01 % (Q=13260 m3/s) 0.1 % (Q=8320 m3/s) 0.5 % (Q=5550 m3/s) 1-10 % (Q=2600 m3/s) HPP -1, km 0 HPP 1 0 85.21 81.69 79.87 77.95 1 st 3 0.480 85.06 81.55 79.78 77.92 2 st 5 0.954 84.87 81.38 79.67 77.88 3 st. 6 – level gauge Novodnis- 1.500 84.65 81.14 79.53 77.83 trovsk 4 st 7 1.710 84.59 81.08 79.49 77.82 5 st 8 – cable bridge 1.939 84.51 80.98 79.43 77.79 6 st 11 – vil. Bernashivka 2.653 84.32 80.65 79.13 77.69 7 st 13 3.284 84.24 80.50 78.97 77.62 8 8 hyd 5.949 83.76 79.89 78.44 77.44 9 st. 16 – v.Lypchany 7.461 83.44 79.48 78.15 77.36 10 pp 17 А 8.841 83.18 79.19 77.95 77.30 11 pp 18 - PSP 9.520 83.10 79.10 77.89 77.29 12 st 20 9,860 83,06 79,06 77,87 77,28 13 st 21 10.390 82.96 78.95 77.80 77.27 14 st 22 10.846 82.85 78.82 77.72 77.25 15 st 24 11.860 82.59 78.54 77.56 77.21 16 st 25 12.576 82.47 78.40 77.46 77.18 17 st 28 – vil. Kozliv 13.935 82.32 78.20 77.34 77.15 18 st 32 15.789 82.19 78.01 77.22 77.13 19 st 38 19.307 82.02 77.82 77.11 77.10 20 st 39 – buffer hydraulic pro- 19.550 82.00 77.80 77.10 77.10 ject

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Annex F (for reference) Location diagram of the Dniester PSPP downstream (buffer) reservoir’s bank protection structures

Drawing

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Annex G (recommended) Standard hydro-meteorological observations and works at the hydro-meteorological network of the Dniester and the buffer reservoirs

Type of observations, works Time and duration of observations, works Observations: Regulated by “Instructions to hydro-meteorological stat- - at the instrument platform of the at the level tions and posts ”, issue 3, part.1 (Meteorological observa- gauge in the vicinity of Novodnistrovsk city: tions at stations, State hydro-meteorological service, Kyiv, а) of ambient air temperature and humidity, at- 2011 ). mospheric precipitation, snow cover and elements Every 3 hours within the timeframe as per the WMO regu- of wind conditions; lations, snow cover at 08 o’clock if any snow Every 3 hours within the timeframe as per the WMO regu- б) of very dangerous meteorological phenomena; lations Regulated by Instructions to hydro-meteorological stations and posts, issue 6, part I (Hydrological observations at large and medium rivers, Hydrometeoizdat publishers, - at the Dniester river level gauges in the vicinity 1978) and issue 2, part II (Hydrological observations at of the towns of Zalishchyky and Mohyliv- posts, Hydrometeoizdat publishers, 1975) Podilsky; Specific types of observations and the timeframe for carry- ing them out shall be regulated by the annual work and ob- servation plans approved by the Hydro-meteorological cen- ter of Ukraine Ditto, issue7, part I (Hydrological observations at lakes and water reservoirs, Hydrometeoizdat publishers, 1978) - at lake level gauges of the Dniester (headwater) Specific types of observations and the timeframe for carry- and Dniester buffer reservoirs ing them out shall be regulated by the annual work and ob- servation plans approved by the Hydro-meteorological cen- ter of Ukraine а) of water level (discharge*) Daily, at 08 and 20 hours local time, at the time of floods and high water – every 4-6 hours. In the absence of a stable ice sheet – daily at 08 and б) of water temperature near the bank; 20 hours local time From the time of appearance of ice features till the disap- pearance of ice, daily – after the time for morning observa- в) of ice phenomena (a set of visual observations); tions at daylight; additionally – in case of a significant change of the ice situation during the day г) of the ice sheet thickness, depth of snow Once in five days (on the 5, 10, 15, 20, 25 day and on it, presence of slush below ice on the last day of the month) during the period with ice phenomena ** е) of very dangerous phenomena; From the moment the phenomenon occurs till it stops -on the reservoir surface: а) at maximum depth points – of air tempera- If ice exists in winter – once a month (January-March). ture and humidity, wind direction and speed, In summer – once a month (April-November) during cloud cover, water temperature in reaches, rise daylight. and fall of waves, transparency and color of wa- ter; б) measurement of water discharge through Daily, at 08 and 20 hours local time. As per the instruc- HPP sluices. tions “Guidelines on measuring water at hydroelectric power plants», МУ 34-70-063-84 (effective as of 01.01.1984 )

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Annex G continued Type of observations, works Time and duration of observations, works Works: Twice during the period of sustainable ice formation: at - two-dimensional ice survey on the reservoir; the beginning of ice formation and before its rotting Complete chemical analysis four times a year (during - taking of samples for the complete chemical the hydrological periods of water content appropriate for analysis at maximum depth points; the reservoir in question) - metering of water discharge at water develop- Detailed check of the discharge metering – once a year, ments; monitoring – as required - methodological organizational and technical Inspection of designated posts – once a year and addi- management of the gauge posts, inclusive of in- tionally, as required spections; - technical supervision and critical review of all Technical supervision on a regular basis after processing the materials, including development of tables the observation data; critical review on a regular basis (prescribed by the Instructions), development of when compiling data tables. Compilation of monthly ta- materials for the publication of the reference book ble by the fifth day of the month following the reporting “Annual data on the surface waters of the firm one; preparation of observation data a year prior to print- land”; ing – the first quarter of the next year - provision of current hydro-meteorological in- On a permanent basis, as per the plan of information formation to the economic entities; work Annual balances of water resources – on April 30 of the - preparation of water resources balances. next year; monthly balances – by the 5th – 10th day of the month following the reporting month Supervisory guidance of hydro-meteorological observations and works shall be provided by: Central Geo- physical laboratory, regional centers for hydrometeorology and the Svitlovodsk specialized hydro- meteorological observatory (HMO) of the State service for emergency situation of Ukraine N o t e s : 1 Sign (*) means that observations and calculation of daily water discharge shall be performed by the river level gauge posts only; 2 Sign (**) means that regular measurements of the ice thickness begin from the time when it be- comes possible to safely walk on the ice. .

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Annex L (additional) Dangerous marks and consequences of water effect in the area downstream of the Dnie- ster HPP -1 (according to actual archive information)

Name of gauge, Mark

gauge above Name of economic enti- ## River What is the danger or detrimental effect on Note “0” gauge “0” ty and its location the facility mark in m of BS After commis- sioning of Moh. 600 City of Mohyliv- Dniester Dniester Podilsky Flooding of the pier and utility spaces 1 Podilsky HPP phe- 58.17 nomena was not observed 2 City of 650 Mohyliv-Podilsky Water begins discharging into the city through the sewage system pipes.

3 Flooded are Dachna street (households ad- jacent to the river side, 189 houses.), City of M.Hrushevsky str. (76 houses), Zhovtnevy Mohyliv-Podilsky lane, Fisculturna str. (18 houses), territory 660 between the traffic police headquarters and the greenhouse farm, Horky str. and Horky by-street from "Kyivrichflot" (backwash) to the end of the city of Mohyliv-Podilsky, small land holdings, tourist base, rest camp "Artek". 4 City of In addition to the above, Paraskeyivska str. 800 Mohyliv-Podilsky (18 houses.), Karbyshev str. (53 houses), Glynsky by-street (33 houses), ІІІ Hvar- diyska str. (117 houses), Osypenko str. (1 house). 5 820 City of In addition to the above – Horky by-street Mohyliv-Podilsky (58 houses), Hogol str. (39 houses), Stavyska str. (157 houses) 6 City of In addition to the before mentioned – also І 1000 Mohyliv-Podilsky Poltavsky by-street (6 houses), Poltavska str. (beginning at the railway bridge (10 houses), Hretska str. (75 houses.). vil.Troyitske, Olonesh Dniester 290 region, Flooding of Troyitske forest district. 1 ty -1,92 Biliayivsky district vil.Troyitske, Flooding of float bridge over Turunduk riv- 2 450 Odessa region, er, access routes. Biliayivsky district 3 480 vil.Yasky, Odessa Flooding of dacha plots and vegetable gar- region, dens, dam of the fish processing plant in the Biliayivsky district village of Yaky. Flooding of dam-protected farmlands of the "Druzhba narodiv" and "Troyitsky" state- owned farms.

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Name of gauge, Mark

gauge above Name of economic enti- ## River What is the danger or detrimental effect on Note “0” gauge “0” ty and its location the facility mark in m of BS

Highway Mayaky- Flooding of sturgeon producing plant, of 505 4 Palanka highway Mayaky-Palanka. Flooding of more than 150 houses in the vil. Yasky and Troyit- village of Yasky, of irrigation systems in 5 530 ske, Odessa region, "Druzhba narodiv" and "Troyitsky" state- Biliayivsky district owned farms. Flooding of float bridge over Turunduk river in vil. Troyitske. Town Biliayivka, 6 550 Odessa region, Flooding of about 300 houses. Biliayivsky district v.Mayak Outflow of water to the highway Odessa- Dniester y 155 Highway Odesa-Reni Reni. -1,11 1 170 Highway Odesa-Reni Highway is closed for transport Town Biliayivka, vil. Flooding of several houses and vegetable 2 181 Yasky, Odessa region, gardens in the vil. Yasky and Biliayivka Biliayivsky district town. 3 185 Highway Odesa-Reni Highway flooded 0.3-0.5 m deep.

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Всього Анульо- Змінених Замінених Нових аркушів Номер Зм. ваних Підп. Дата (сторінок) toк. в toк. Номера аркушів (сторінок) Revision table

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