Minimum Residual Flows for Catchments in the Czech Republic

The determination of minimum residual flow (MRF) follows diverse methodology in Europe due to differing hydrological conditions, ecosystem requirements, water abstraction requirements, and legislation. Methodologies in individual countries are difficult to compare qualitatively. However, individual...

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Main Authors: Pavel Balvín, Adam Vizina, Magdalena Nesládková, Johanna Blöcher, Marcela Makovcová, Vojtěch Moravec, Martin Hanel
Format: Article
Language:English
Published: MDPI AG 2021-03-01
Series:Water
Subjects:
Online Access:https://www.mdpi.com/2073-4441/13/5/689
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author Pavel Balvín
Adam Vizina
Magdalena Nesládková
Johanna Blöcher
Marcela Makovcová
Vojtěch Moravec
Martin Hanel
author_facet Pavel Balvín
Adam Vizina
Magdalena Nesládková
Johanna Blöcher
Marcela Makovcová
Vojtěch Moravec
Martin Hanel
author_sort Pavel Balvín
collection DOAJ
description The determination of minimum residual flow (MRF) follows diverse methodology in Europe due to differing hydrological conditions, ecosystem requirements, water abstraction requirements, and legislation. Methodologies in individual countries are difficult to compare qualitatively. However, individual approaches can serve as examples for countries undergoing the process of developing new methodologies, either for legislative purposes or to improve environmental standards on watercourses. This is exactly the situation in the Czech Republic which, has been working on the Regulation of the Government of the Czech Republic for ten years, since the amendment to the Water Act in 2010, defines the methods and criteria for determining the MRF on watercourses. T.G. Masaryk Water Research Institute, p.r.i., was commissioned to develop a new methodology to serve as the basis for the wording of aforementioned regulation. The new methodological approach took into account modern trends concerning the preservation of ecological standards, and used standard hydrological characteristics for its calculations. The newly proposed approach is undergoing a complicated approval process as the authors seek to increase the MRF compared to the current approach. The new approach assumes an MRF setting between <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>Q</mi><mn>97</mn></msub></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>Q</mi><mn>90</mn></msub></semantics></math></inline-formula>. It defines four areas within the Czech Republic, by their hydrological and hydrogeological conditions, where the MRF is determined in different ways. This article describes the development of a new methodological approach, including the use the available Czech Hydrometeorological Institute data sets, the proposed regional division for MRF calculations, the determination the MRF below reservoirs, and the current state of the issue.
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spelling doaj.art-179007cf425c49dcbd9b8c252030830f2023-12-03T12:24:00ZengMDPI AGWater2073-44412021-03-0113568910.3390/w13050689Minimum Residual Flows for Catchments in the Czech RepublicPavel Balvín0Adam Vizina1Magdalena Nesládková2Johanna Blöcher3Marcela Makovcová4Vojtěch Moravec5Martin Hanel6T. G. Masaryk Water Research Institute, Podbabská 2582/30, 160 00 Praha, Czech RepublicT. G. Masaryk Water Research Institute, Podbabská 2582/30, 160 00 Praha, Czech RepublicT. G. Masaryk Water Research Institute, Podbabská 2582/30, 160 00 Praha, Czech RepublicT. G. Masaryk Water Research Institute, Podbabská 2582/30, 160 00 Praha, Czech RepublicT. G. Masaryk Water Research Institute, Podbabská 2582/30, 160 00 Praha, Czech RepublicT. G. Masaryk Water Research Institute, Podbabská 2582/30, 160 00 Praha, Czech RepublicT. G. Masaryk Water Research Institute, Podbabská 2582/30, 160 00 Praha, Czech RepublicThe determination of minimum residual flow (MRF) follows diverse methodology in Europe due to differing hydrological conditions, ecosystem requirements, water abstraction requirements, and legislation. Methodologies in individual countries are difficult to compare qualitatively. However, individual approaches can serve as examples for countries undergoing the process of developing new methodologies, either for legislative purposes or to improve environmental standards on watercourses. This is exactly the situation in the Czech Republic which, has been working on the Regulation of the Government of the Czech Republic for ten years, since the amendment to the Water Act in 2010, defines the methods and criteria for determining the MRF on watercourses. T.G. Masaryk Water Research Institute, p.r.i., was commissioned to develop a new methodology to serve as the basis for the wording of aforementioned regulation. The new methodological approach took into account modern trends concerning the preservation of ecological standards, and used standard hydrological characteristics for its calculations. The newly proposed approach is undergoing a complicated approval process as the authors seek to increase the MRF compared to the current approach. The new approach assumes an MRF setting between <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>Q</mi><mn>97</mn></msub></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>Q</mi><mn>90</mn></msub></semantics></math></inline-formula>. It defines four areas within the Czech Republic, by their hydrological and hydrogeological conditions, where the MRF is determined in different ways. This article describes the development of a new methodological approach, including the use the available Czech Hydrometeorological Institute data sets, the proposed regional division for MRF calculations, the determination the MRF below reservoirs, and the current state of the issue.https://www.mdpi.com/2073-4441/13/5/689residual flowenvironmental flownew methodologyregionalizationseasonality of MRF
spellingShingle Pavel Balvín
Adam Vizina
Magdalena Nesládková
Johanna Blöcher
Marcela Makovcová
Vojtěch Moravec
Martin Hanel
Minimum Residual Flows for Catchments in the Czech Republic
Water
residual flow
environmental flow
new methodology
regionalization
seasonality of MRF
title Minimum Residual Flows for Catchments in the Czech Republic
title_full Minimum Residual Flows for Catchments in the Czech Republic
title_fullStr Minimum Residual Flows for Catchments in the Czech Republic
title_full_unstemmed Minimum Residual Flows for Catchments in the Czech Republic
title_short Minimum Residual Flows for Catchments in the Czech Republic
title_sort minimum residual flows for catchments in the czech republic
topic residual flow
environmental flow
new methodology
regionalization
seasonality of MRF
url https://www.mdpi.com/2073-4441/13/5/689
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