{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T19:58:46Z","timestamp":1782417526812,"version":"3.54.5"},"reference-count":3,"publisher":"STEF92 Technology","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2022,11,15]]},"abstract":"<jats:p>The main goal of presented study is a demonstration of technological approach to determine the water resources of surface water bodies, using a sparse hydrological monitoring network not covering many of them. Resource of the water body is a flow formed in the catchment area above the studied one including the additional inflow in the frame of the same water body. Practically the flow is changing in each sector of the water body but average annual resources are specified at the final section. The water resources for the river water bodies are determined using information from the monitoring network of the National Institute of Meteorology and Hydrology, Bulgarian Academy of Sciences (NIMH) for the Iskar River. The investigation is preceded by hydrological analysis of the information: the referent period, homogenous and suitable data set selection for statistical procedures reflecting the actual conditions in the surface water. \nThe transfer of information from observed river stretches to non-observed ones requires a special hydrological investigation and methodological decision. In the world practice there are two main methodological approaches for flow determination in the nonobserved river stretches - regionalization of characteristic flows depending on catchment characteristics and a balance method. The balance method requires a very big amount of information linked to the various water consumptions as: water supply, irrigation, power engineering, reservoir management and water accumulation very often missing or not reliable. That is the reason for the acceptance of regionalization of characteristic flows as a suitable approach for Bulgarian conditions based on the real and reliable measured data from the monitoring network in NIMH. In the case of water accumulation after dams, where practically the flow is interrupted, the water resource determination can be based only on the information from reservoir management authorities (if this information exists). \nIskar River has a biggest watershed in the Danube catchment area in Bulgaria, where the capital Sofia is located, with important economic significance and big anthropogenic impacts on the flow regime. In the study is used a GIS information for the water bodies delineation presented by the Ministry of Environment and Water.<\/jats:p>","DOI":"10.5593\/sgem2022\/3.1\/s12.23","type":"proceedings-article","created":{"date-parts":[[2023,2,13]],"date-time":"2023-02-13T20:34:51Z","timestamp":1676320491000},"page":"185-192","source":"Crossref","is-referenced-by-count":1,"title":["TECHNOLOGICAL APPROACH FOR WATER RESOURCES DETERMINATION IN ISKAR RIVER WATER BODIES"],"prefix":"10.5593","volume":"22","author":[{"given":"Plamen","family":"Ninov","sequence":"first","affiliation":[{"name":"National Institute of Meteorology and Hydrology, Bulgarian Academy of Sciences","place":["Bulgaria"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elena","family":"Bojilova","sequence":"additional","affiliation":[{"name":"National Institute of Meteorology and Hydrology, Bulgarian Academy of Sciences","place":["Bulgaria"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"3602","reference":[{"key":"ref=1","unstructured":"[1] Iordanov and all, Geography of Bulgaria, Edition of Bulgarian Academy of Sciences, Bulgaria, 2002"},{"key":"ref=2","doi-asserted-by":"crossref","unstructured":"[2] Wilson \ufffd.\ufffd., Engineering hydrology- Forth Edition, MACMILAN PRES LTD, UK, London, pp 198-276, 1990.","DOI":"10.1007\/978-1-349-20610-0_8"},{"key":"ref=3","doi-asserted-by":"crossref","unstructured":"[3] Zhang, Y., Chiew, F.H.S., Relative merits of different methods for runoff predictions in ungauged catchments. Water Resour. Res., 45(7): W07412, doi: 10.1029\/2008wr007504, China, 2009.","DOI":"10.1029\/2008WR007504"}],"event":{"name":"22nd SGEM International Multidisciplinary Scientific GeoConference 2022","theme":"Earth and Planetary Sciences","location":"Albena, BG","acronym":"SGEM2022","number":"22","sponsor":["SGEM WORLD SCIENCE (SWS) Scholarly Society, Austria"],"start":{"date-parts":[[2022,7,4]]},"end":{"date-parts":[[2022,7,10]]}},"container-title":["SGEM International Multidisciplinary Scientific GeoConference\ufffd EXPO Proceedings","22nd SGEM International Multidisciplinary Scientific GeoConference Proceedings 2022, Water Resources. Forest, Marine and Ocean Ecosystems"],"original-title":[],"deposited":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T19:25:40Z","timestamp":1782415540000},"score":1,"resource":{"primary":{"URL":"https:\/\/epslibrary.at\/items\/11ead61d-7629-412a-91b8-18e826e8f721\/technological-approach-for-water-resources-determination-in-iskar-river-water-bodies"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,11,15]]},"references-count":3,"URL":"https:\/\/doi.org\/10.5593\/sgem2022\/3.1\/s12.23","relation":{},"ISSN":["1314-2704"],"issn-type":[{"value":"1314-2704","type":"print"}],"subject":[],"published":{"date-parts":[[2022,11,15]]}}}