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Title: COMPARISON OF THE RESULTS OBTAINED BY THE PROPOSED METHODOLOGY FOR ENVIRONMENTAL RUNOFF WITH THOSE CALCULATED UNDER THE CURRENT REGULATION
COMPARISON OF THE RESULTS OBTAINED BY THE PROPOSED METHODOLOGY FOR ENVIRONMENTAL RUNOFF WITH THOSE CALCULATED UNDER THE CURRENT REGULATION

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Maya Rankova; Elena Bojilova; Plamen Angelov; Borislav Vuchkov; Radoslava Ivanova
10.5593/sgem2024/3.1/s12.09
10.5593/sgem2024/3.1
1314-2704
978-619-7603-70-5
English
24
3.1
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Hydrology and Water Resources
In climate change, drought, and water scarcity, the natural functioning of river systems largely depends on the proper distribution of water resources. Accurate determination of hydrological characteristics is essential for the sustainable management of water resources and provides information on the status and potential of water systems. Water management must be implemented in such a way as to meet the needs of man and the economy. At the same time, measures are taken to protect the quantitative characteristics of the aquatic environment. This means that water consumption must not exceed a particular limit value of the river flow - the ecological river flow. The development set determines the hydrological characteristics according to the methodology developed for determining the environmental flow for Bulgarian conditions and comparing it with the value according to the current regulation. The results obtained make it possible to make adequate management decisions, guaranteeing the maintenance of sufficient water in rivers and water ecosystems. The current regulation uses average annual and minimum average monthly water quantities. In our presented Methodology, the estimates are based on average monthly values grouped by three types of water content. It is recommended to work with a hydrological approach and standard statistical methods for calculating ecological flow, which requires a minimum of hydro-ecological information and enables the development of a national strategy.
[1] Bozhilova E.K., Application of Methodology for Ecological Flow for Yantra River Basin in Bulgaria, Journal of Balkan Ecology, Vol. 27, № 1, ISSN 1311-0527 (Print) ISSN 2815-3758 (Online), pp 67-78, 2024
[2] Dimitrov Y., Yordanova A., Trends assessment of meteorological factors, river flow and droughts in North-western Bulgaria, E-book with full paper from XXVII Conference of The Danubian Countries, pp 321-330. Bulgaria, ISBN 978-654-90537-2-2, 2017.
[3] Dimitrov Y., Ilcheva I., Application of an Indicator System for Integrated Space-time Analysis and Drought Management in North-western Bulgaria, XXIX Conference of the Danubian Countries, The Czech Republic, Conference Proceedings with Full Papers, ISBN 978-80-7653-031-7, pp 172–180, 2021.
[4] Ilcheva I., Yordanova A., Nikolova K., Estimation of the Impact of Climate and Land Use Changes on the Availability of Water Resources and Drought Risk, International Multidisciplinary Scientific Geo-conference SGEM 2019, Bulgaria, pp 193-200, 2019.
[5] Ninov, Pl., Karagiozova, Tz., Rankova, M. 2017. Water Resources Determination of Surface Water Bodies at the Bulgarian basin of the Lower Danube, Journal of the Geographical Institute “Jovan Cvijic” SASA, Vol. 67, No 1
[6] Hristova N., Seymenov K., Annual Flow Dynamics in Large and Small Drainage Basins in Northern Bulgaria during the Last Two Decades, Socio-Brains, ISSN 2367-5721, issue 54, pp 123-131, 2019.
[7] Balabanova Sn., Operational system for streamflow forecasting in the Iskar river basin based on Artificial Neural Networks, INHGA - Scientific Conference/Bucharest, November 10-11, 2014, ISBN 978-973-0-18825-7, p. 159-166
[8] Ninov P., Karagiozova T., Monitoring and Investigation of Intermittent Rivers in Bulgaria, E-book of the 28th Conference of the Danubian Countries, Ukraine, pp 6-14, 2019.
[9] World Bank. Delivering the Water Framework Directive in Bulgaria: Developing a Flows Approach WSP, WSP Environment & Infrastructure Solutions UK Limited, 2022.
The paper is based on the research project “Determination of the hydrological characteristics according to a developed methodology for determining the ecological flow for the conditions of Bulgaria and comparison with the values according to the current regulations” with project leader Prof. Plamen Ninov. The author wishes to acknowledge Eng. Kamelia Krumova supervised the research concerning the Iskar River basin.
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https://doi.org/10.5593/sgem2024/3.1/s12.09
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Proceedings of 24th International Multidisciplinary Scientific GeoConference SGEM 2024
24th International Multidisciplinary Scientific GeoConference SGEM 2024, 01 - 07 July, 2024
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Russian Acad Arts; Turkish Acad Sci.
75-82
01 - 07 July, 2024
website
9676
Ecological river runoff, regional relation, hydrological characteristics

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