Assessment of the hydromorphological status of river water bodies in the Czech Republic using HYMOS methodology

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F25%3A73634479" target="_blank" >RIV/61989592:15310/25:73634479 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.vtei.cz/wp-content/uploads/2025/04/6717-VTEI-2-Babej-AJ.pdf" target="_blank" >https://www.vtei.cz/wp-content/uploads/2025/04/6717-VTEI-2-Babej-AJ.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.46555/VTEI.2025.01.003" target="_blank" >10.46555/VTEI.2025.01.003</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Assessment of the hydromorphological status of river water bodies in the Czech Republic using HYMOS methodology

Popis výsledku v původním jazyce

Assessment of the hydromorphological status and its elements (hydrological regime, continuity, morphological conditions) is part of the monitoring of the ecological status of water bodies. Hydromorphology, as a supporting component of biological assessment, has a significant impact on living organisms in aquatic ecosystems. Although the Ministry of the Environment of the Czech Republic (MoE) previously officially approved a methodology for monitoring and assessing the hydromorphological status of waterbodies (HEM methodology), it was only used to a limited extent. In the caseof the third river basin management plans, hydromorphology was assessed exclusively based on remote sensing data according to the Procedure for Determining Significant Impacts on Morphology and Hydrological Regime. Based on the Ministry’s request, a new methodology for assessingthe hydromorphological status of water bodies category rivers (HYMOS) was developed within the TA CR project. This methodology takes into account new requirements and current knowledge in the field of hydromorphology, while also minimizing the drawbacks of previous methodologies, particularly regarding time and cost efficiency in the assessment process. The final version of the methodology was tested on 15 water bodies divided into 50 reaches. A score was calculated for each of these reaches to assess the hydrological regime, continuity, morphological conditions, and overall hydromorphological status. Subsequently, a score for the entire water body was determined, including classification into a status category. The assessment results indicated that for large watercour- ses, where anthropogenic influences are reflected over long reaches, the aggregatedvalue for the entire water body often provides sufficiently meaningful information. In contrast, for water bodies including small and medium-sized watercourses, which are heterogeneous in terms of hydromorphological types and anthropogenic pressures, assessments at the water body level are overly aggregated and fail to identify critical segments. While reporting the status of water bodies requires presenting data for the entire water body, designing measures to improve hydromorphological status benefits from working with detailed reach-level data. Therefore, the HYMOS methodology combines detailed and aggregated approaches, making it a flexible tool suitable for both strategic planning at the water body level and for assessing local reaches in relation to implemented or planned measures.

Název v anglickém jazyce

Assessment of the hydromorphological status of river water bodies in the Czech Republic using HYMOS methodology

Popis výsledku anglicky

Assessment of the hydromorphological status and its elements (hydrological regime, continuity, morphological conditions) is part of the monitoring of the ecological status of water bodies. Hydromorphology, as a supporting component of biological assessment, has a significant impact on living organisms in aquatic ecosystems. Although the Ministry of the Environment of the Czech Republic (MoE) previously officially approved a methodology for monitoring and assessing the hydromorphological status of waterbodies (HEM methodology), it was only used to a limited extent. In the caseof the third river basin management plans, hydromorphology was assessed exclusively based on remote sensing data according to the Procedure for Determining Significant Impacts on Morphology and Hydrological Regime. Based on the Ministry’s request, a new methodology for assessingthe hydromorphological status of water bodies category rivers (HYMOS) was developed within the TA CR project. This methodology takes into account new requirements and current knowledge in the field of hydromorphology, while also minimizing the drawbacks of previous methodologies, particularly regarding time and cost efficiency in the assessment process. The final version of the methodology was tested on 15 water bodies divided into 50 reaches. A score was calculated for each of these reaches to assess the hydrological regime, continuity, morphological conditions, and overall hydromorphological status. Subsequently, a score for the entire water body was determined, including classification into a status category. The assessment results indicated that for large watercour- ses, where anthropogenic influences are reflected over long reaches, the aggregatedvalue for the entire water body often provides sufficiently meaningful information. In contrast, for water bodies including small and medium-sized watercourses, which are heterogeneous in terms of hydromorphological types and anthropogenic pressures, assessments at the water body level are overly aggregated and fail to identify critical segments. While reporting the status of water bodies requires presenting data for the entire water body, designing measures to improve hydromorphological status benefits from working with detailed reach-level data. Therefore, the HYMOS methodology combines detailed and aggregated approaches, making it a flexible tool suitable for both strategic planning at the water body level and for assessing local reaches in relation to implemented or planned measures.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

<a href="/cs/project/SS05010135" target="_blank" >SS05010135: Vývoj metodiky pro monitoring a hodnocení hydromorfologických charakteristik vodních toků</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Vodohospodářské technicko-ekonomické informace

ISSN

0322-8916

e-ISSN

1805-6555

Svazek periodika

67

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

11

Strana od-do

30-40

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-105007318263