Technical Report: Delineation of Surface Water Bodies in Sevan and Hrazdan River Basins in Armenia
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European Union Water Initiative Plus for Eastern Partnership Countries (EUWI+): Results 2 and 3 ENI/2016/372-403 TECHNICAL REPORT: DELINEATION OF SURFACE WATER BODIES IN SEVAN AND HRAZDAN RIVER BASINS IN ARMENIA Final Version. EUWI-EAST-AM-07; October 2019 Responsible EU member state consortium project leader Alexander Zinke, Umweltbundesamt GmbH (AT) EUWI+ country representative in Armenia Vahagn Tonoyan (AM) Responsible international thematic lead expert Alexander Zinke, Umweltbundesamt GmbH (AT) Georg Wolfram, independent consultant, DWS (AT) Responsible Armenian thematic lead expert Levon Azizyan, Hydrometorology and Monitoring Service (AM) Authors S. Minasyan, Ph.D., Team Leader, Institute of Chemical Physics NAS RA V. Sargsyan, Doctor of Science, Hydrologist, Institute of Chemical Physics NAS RA E. Misakyan, Hydrologist, Institute of Chemical Physics NAS RA G. Shahnazaryan, Ph.D., Water quality and monitoring specialist, Institute of Chemical Physics NAS RA D. Zakaryan, GIS specialist, Hydrologist, Institute of Chemical Physics NAS RA Disclaimer: The EU-funded program European Union Water Initiative Plus for Eastern Partnership Countries (EUWI+ 4 EaP) is implemented by the UNECE, OECD, responsible for the implementation of Result 1 and an EU member state consortium of Austria, managed by the lead coordinator Umweltbundesamt, and of France, managed by the International Office for Water, responsible for the implementation of Result 2 and 3. This document, the “Technical Report: Delineation of surface water bodies in Sevan and Hrazdan River Basins in Armenia”, was produced by the EU member state consortium with the financial assistance of the European Union. The views expressed herein can in no way be taken to reflect the official opinion of the European Union or the Governments of the Eastern Partnership Countries. This document and any map included herein are without prejudice to the status of, or sovereignty over, any territory, to the delimitation of international frontiers and boundaries, and to the name of any territory, city or area. Imprint Owner and Editor: EU Member State Consortium Umweltbundesamt GmbH Office International de’l Eau (IOW) Spittelauer Lände 5 21/23 rue de Madrid 1090 Vienna, Austria 75008 Paris, FRANCE Responsible IOW Communication officer: Yunona Videnina [email protected] October 2019 Technical Report on SW Delineation - Armenia CONTENTS 1 Executive summary ............................................................................................................................ 8 2 Introduction ......................................................................................................................................... 8 3 Description of the main river catchments in the Sevan and Hrazdan River basin districts .............. 12 3.1 Sevan River Basin District ........................................................................................................ 12 3.2 Hrazdan River Basin District ..................................................................................................... 14 4 Characterisation of Sevan and Hrazdan river catchments (grouped SWB) summarising the hydrogeological characteristics, the main anthropogenic pressures and the importance of their main uses ................................................................................................................................. 17 4.1 Sevan river catchment .............................................................................................................. 17 4.2 Hrazdan River Basin District ..................................................................................................... 19 5 Summary description of types of river and lake in the Sevan and Hrazdan RBDs including a brief description of reference conditions for the most relevant biological quality elements ............. 22 5.1 Summary description of types of river and lake in the Sevan RBD .......................................... 22 5.2 Summary description of types of river and lake in the Hrazdan RBD ...................................... 23 6 Significant anthropogenic pressures on surface water bodies and associated potential chemical pollutants ........................................................................................................................... 25 6.1 Assessment of Chemical Status of Sevan BMA. Monitoring .................................................... 25 6.2 Assessment of Ecological Status of Sevan BMD. "Pressure-impact" assessment .................. 29 6.3 Assessment of Chemical Status of Hrazdan BMA. Monitoring ................................................ 30 6.4 Assessment of Ecological Status of Hrazdan BMA. "Pressure-impact" assessment............... 34 7 Description of the current monitoring situation with an inventory of the existing monitoring sites and ecological/chemical status ................................................................................................ 36 7.1 Hydrological monitoring ............................................................................................................ 36 7.2 The ecological status of water bodies based on hydrological monitoring data ........................ 39 7.2.1 Hrazdan River basin (Sub-basin of Qasakh River) ........................................................ 39 7.2.2 Hrazdan River basin (Sub-basin of Hrazdan River) ....................................................... 40 7.2.3 Sevan BMA ..................................................................................................................... 41 7.3 Surface Water Quality Monitoring in the Sevan and Hrazdan RBDs ....................................... 43 7.3.1 Surface water quality monitoring in the Sevan RBD ...................................................... 44 7.3.2 Surface water quality monitoring in the Hrazdan RBD ................................................... 45 8 Detailed documentation of the applied methodologies and implementation steps and considered information (inclusion of references and literature) ....................................................... 46 8.1 Criteria and procedure for the delineation ................................................................................ 46 8.2 Data collection .......................................................................................................................... 47 8.3 Identification of water bodies. Methodology ............................................................................. 48 8.4 Pressure and impact analysis ................................................................................................... 49 8.5 Risk assessment ....................................................................................................................... 51 ENI/2016/372-403 3 Technical Report on SW Delineation - Armenia 8.6 Delineation of water bodies by ecological flow ......................................................................... 52 8.7 Coding of the water bodies in Sevan and Hrazdan WBMA ...................................................... 52 8.8 Notes on completed characterisation templates ...................................................................... 53 8.9 Typology of delineated water bodies ........................................................................................ 54 8.10 Characterisation of the main sub-catchments .......................................................................... 55 8.11 Map production ......................................................................................................................... 55 9 Open issues for data gaps to be addressed in future ...................................................................... 56 9.1 Delineation ................................................................................................................................ 56 9.2 Monitoring ................................................................................................................................. 56 10 Bibliography ...................................................................................................................................... 58 11 List of Annexes ................................................................................................................................. 60 4 ENI/2016/372-403 Technical Report on SW Delineation - Armenia List of Tables Table 1. The typology of delineated water bodies in Sevan RBD. Rivers. ............................ 22 Table 2. The typology of delineated water bodies in Sevan RBD. Lakes. ............................ 23 Table 3. The typology of delineated water bodies in Hrazdan RBD. Rivers. ........................ 24 Table 4. The typology of delineated water bodies in Hrazdan RBD. Lakes (reservoirs). ...... 24 Table 5. The Chemical Status of waters in Monitoring sites in the Sevan BMD ................... 25 Table 6. Nutrients in Lake Sevan, 2017. .............................................................................. 28 Table 7. The Chemical Status of waters in Monitoring sites in the Hrazdan BMA. ............... 31 Table 8. The quantity monitoring network in the Sevan RBD. .............................................. 36 Table 9. Water quantity monitoring network in the Lake Sevan. .......................................... 37 Table 10. Water quantity monitoring network in the Hrazdan RBD. ..................................... 38 Table 11. Water quantity monitoring network in the