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Review of Existing Sediment Monitoring Data, Standards and Technics Is SRB

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Review of Existing Sediment Monitoring Data, Standards and Technics Is SRB Towards practical guidance for Sustainable Sediment Management (SSM) using the Sava river basin as a showcase Sediment monitoring workshop Zagreb, Croatia–September3-4, 2015 Review of existing sediment monitoring data, standards and technics is SRB Dr Marina Babić Mladenović, Institute Jaroslav Cerni, Belgrade, Serbia Institutions responsible for sediment monitoring in SRB countries - Slovenia • Sediment transport: Hydrologic monitoring, including monitoring of sediment transport, is performed by the Slovenian Environment Agency (ARSO).The results published by the Slovenian Environment Agency (ARSO) in annual reports, results of additional measurement, performed during flood events, are published in special reports. More details on monitoring can be found on http://www.arso.gov.si/ . • Sediment quality: Water quality monitoring is performed by the Slovenian Environment Agency (ARSO). • Reservoir sedimentation: Obligation of HPP owners (Savske elektrarne and HESS – Hidroelektrarne na Spodnji Savi). • Dredging: For dredging of fluvial (river) sediments concessions for dredging are issued. Also, occasional dredging is performed by NPP Krško. • Survey of river cross-sections: Survey of cross sections on water gauging stations is performed by the Slovenian Environment Agency (ARSO). Institutions responsible for sediment monitoring in SRB countries - Croatia • Sediment transport: Sediment monitoring is a task of the Hydrological and Meteorological Service, Hydrology Department (DHMZ). All hydrological parameters, including sediment data, are being stored in hydrological database (Hydrological Information System 2000) developed by Hydrological and Meteorological Service, Hydrology Department. Annual overview on sediment data is published in the Hydrological yearbooks. More details on monitoring can be found on www.dhmz.htnet.hr . • Sediment quality: Water quality monitoring is performed by Croatian Waters. DHMZ is responsible only for particle size distribution of suspended and bed load at some hydrological gauging stations. • Reservoir sedimentation: Monitoring of reservoir sedimentation is obligation of HPP owners and Croatian Waters and is done by DHMZ. • Dredging: Croatian Waters • Survey of river cross-sections: Croatian Waters and Agency for inland waterways (Agencija za vodne putove). DHMZ is responsible only for monitoring of morphological changes at the location of hydrological gauging stations. Institutions responsible for sediment monitoring in SRB countries – Bosnia and Herzegovina • The right bank of the Sava in Bosnia and Herzegovina belongs to Federation of Bosnia and Herzegovina, Republic Srpska, and Brcko District. Water monitoring is carried out by hydrometeorological services of 2 entities (FHMZFBIH and RHMZRS). • Sediment transport:- • Sediment quality: Water quality monitoring in Republic Srpska is performed by Javna ustanova Vode Srpske and Agencija za vodno podrucje rijeke Save in Federation BiH. Sediment quality investigations were performed only through a few projects – NATO SfP DSS for river Bosnia and JICA Hot spots in B&H. • Reservoir sedimentation: Monitoring of reservoir sedimentation is obligation of reservoir owners, performed recently only by JP “Spreca”, for reservoir “Modrac” • Dredging: Javna ustanova Vode Srpske in Republic Srpska and Agencija za vodno područje rijeke Save in Federation BiH. • Survey of river cross-sections: - Institutions responsible for sediment monitoring in SRB countries – Serbia • Sediment transport: Although the sediment monitoring is still present in the Program of the Republic hydrometeorological service of Serbia (RHMSS), it is not re-established because the instruments and methodology should be updated. • Sediment quality: Ministry of agriculture and environmental protection, Agency for Environmental Protection. • Reservoir sedimentation: Electric Power Industry of Serbia in case of HPPs on Drina River • Dredging: Ministry of agriculture and environmental protection, Republic directorate for water • Survey of river cross-sections: Ministry of Construction, Transport and Infrastructure, Directorate for Inland Waterways Review of monitoring network, standards, techniques and practices in SRB countries - Slovenia Suspended sediment transport • Monitoring network: Presently on only 3 rivers in the SRB: Sava (g.s. Hrastnik), Sora (g.s. Suha) and Savinja River (g.s. Veliko Širje I). Monitoring interrupted for some years, and will be re-established in 2015 at 9 monitoring stations (program BOBER, started in 2010). • Sampling method: Continuous turbidity measurement devices will be installed in 2015 • Sampling/measurement schedule : Continuous • Laboratory analysis: SSC - filtration method. • Processing: Q and SSC using ADCP Bedload measurements do not exist. Sediment quality monitoring • Monitoring network: at 6 water bodies (2 at Sava Dolinka, 2 at Krka and Sotla/Sutla and 2 sites at the Lower Sava River (Vrhovo-Boštanj + border cross section at Jesenice na Dolenjskem) • Standard: Sediment sampling SIST ISO 5667 - 12 & ISO 5667 - 15. For the chemical analysis of sediments the wet sieved fraction < 63 μm is used. • Sampling schedule: Primary substances in sediments are sampled 4 to 12 times a year. Reservoir sedimentation measurements • Reservoirs of HPP Moste on the Sava Dolinka River, HPP Mavčiče and HPP Vrhovo on the Sava River. Dredging data • Data collected on a few locations. River cross sections: In water gauging stations on a regular basis (on average four times a year), occasionally using ADCP on a boat (in existing HPP reservoirs). Review of monitoring network, standards, techniques and practices in SRB countries - Croatia Suspended sediment transport • Monitoring network: 10 gauging stations in SRB (4 on SR and 6 on tributaries) • Sampling method: Grab samples, point or depth integrating samplers - according to ISO 4365:2005 ISO 4363:2002 standards used for profile mean SSC and mean particle size distribution • Sampling/measurement schedule : Point samples once a day. Profile measurements of SSC and load, at 3 stations on the Sava River, periodically. • Laboratory analysis: SSC -standard vaporization and filtration methods. • Processing: Q measurements using ADCP or current meter. ADCP also used for SSC measurement. • Analyses: Daily, monthly and annual basis, correlation with water levels, discharges, and grain size distribution of the material is derived. Published in the Hydrological yearbooks. Data from profile measurements published in annual reports and studies. Bedload measurements do not exist. Sediment quality monitoring • Monitoring network: 7 locations (according to WFD requirements) • Standard: The chemical analysis of sediments includes total N, total P, heavy metals, mineral oil, etc. No specific standards - the contents are compared between different streams. Regular monitoring + periodic chemical analyses on a project-to-project basis. • Sampling schedule: Reservoir sedimentation measurements • Only in the reservoir upstream of the Novska lake Dredging data River cross sections Review of monitoring network, standards, techniques and practices in SRB countries – Bosnia and Herzegovina Suspended sediment transport • Monitoring network: - • Sampling method: - • Sampling/measurement schedule: - • Laboratory analysis: - • Processing:- • Analyses: Occasional monitoring of sediment is conducted for individual projects, like “The Sava River waterway design - monitoring on the Sava River” and “HPP Vranduk project – monitoring on the River Bosna”. Bedload measurements do not exist. Sediment quality monitoring • Monitoring network: Regular monitoring doesn’t exist. Sediment quality measurements were only conducted within “Sava River Basin project: Sustainable usage, management and protection of resources”. Samples were collected four times (08/2005, 11/2005, 05/2006, 10/2006) after drought and rain periods • Standard:- • Sampling schedule: - Reservoir sedimentation measurements Dredging data River cross sections Review of monitoring network, standards, techniques and practices in SRB countries – Serbia Suspended sediment transport • Monitoring network: - • Sampling method: - • Sampling/measurement schedule: - • Laboratory analysis: - • Processing:- • Analyses: Bedload measurements do not exist. Sediment quality monitoring • Monitoring network : River sediments are analysed at 4 locations on the SR (Jamena, Sremska Mitrovica, Šabac, Ostružnica) and many locations on tributaries • Standard:- • Sampling schedule: - Reservoir sedimentation measurements: occasionally, in Bajina Bašta and Zvornik reservoirs on the Drina river. Include sampling of bed material in reservoirs and survey of the riverbed within reservoir space Dredging data: Only data on water permissions for individual dredging fields are stored in a database. Actually dredged quantities are not available. River cross sections : Sava riverbed was surveyed in 2004 and 2009. Conclusions • Only suspended sediment is monitored, while bedload measurements are not present anymore; • Regular monitoring of suspended sediment is currently present only in Slovenia and Croatia; • Suspended sediment sampling and measurement methodologies are different in Slovenia and Croatia; • Sediment quality measurements according the Water Framework Directive (2000/60/EC) are done in Slovenia, Croatia and Serbia; • Data on reservoir sedimentation are not collected on a regular basis; • Data on dredging are not publically available in all countries. .
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