Assessment of river alteration using a new hydromorphological index

Gündüz, Orhan; Şimşek, Celalettin

doi:10.1007/s10661-021-09018-w

Cited by 6 publications

(3 citation statements)

References 19 publications

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“…As noted by Gündüz & Şimşek (2021), an increase in modification of a riverbed gradually increases with direction of flow, especially when the main river and its tributaries flow through urbanised areas. Profiling and slope reinforcement are evident in this case, and the bed is partially concreted or totally channelised.…”

Section: Discussionmentioning

confidence: 90%

The impact of the geographical environment on the hydromorphological conditions of watercourses in southern Poland

Borek

2024

geol

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Hydromorphological assessment of watercourses provides much valuable information about the riverbed and its immediate surroundings, including the influence of geographical environmental factors along with anthropogenic pressures in the catchment area. This paper presents diversity of hydromorphological conditions of 77 sections located on 39 watercourses in southern Poland in three European ecoregions: Eastern Plains, Central Plains and the Carpathians. The study was based on the Hydromorphological Index for Rivers (HIR) method and two sub-indices: Hydromorphological Diversity Score (HDS) and Hydromorphological Modification Score (HMS). Basic and multi-dimensional statistical analyses were performed to identify the main gradients of the geographical environment and the variables that contribute most to the total variability of HIR. The highest mean HIR values were recorded in the Carpathians ecoregion, then in the Central Plains and the lowest in the Eastern Plains, 0.70, 0.67 and 0.58, respectively. Significant differences were found between the Carpathians and Eastern Plains ecoregions in HIR values obtained. Hydromorphological differentiation is most influenced by altitude and geological type. The cluster analysis enabled two main groups of watercourses to be distinguished – the first one was dominated by variables showing HMS > HDS relationship, while the second one was dominated by HDS > HMS relationship. Multi-dimensional analysis provided additional information on the relationships between the variables and the sections studied. The greatest positive impact on the formation of the final HIR value had the variation of the riverbed slope and natural morphological elements of the bed bottom, while the greatest negative impact on HIR had the transformations observed in spot-check.

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Section: Discussionmentioning

confidence: 90%

The impact of the geographical environment on the hydromorphological conditions of watercourses in southern Poland

Borek

2024

geol

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“…Furthermore, some studies have noted inconsistencies in assessing hydromorphological quality due to inadequate adaptation of the methodology to the regional hydromorphological characteristics of the rivers [40]. In this study, the applied indicators are generally in line with the indicators used in other hydromorphological assessment methodologies [34,35] but they are type-specific, i.e., their inclusion and score ranges are differentiated according to the established typology of the water bodies.…”

Section: Challenges In Assessing Hydromorphological Conditions Of Hmw...mentioning

confidence: 84%

“…Studies of hydromorphological alterations in rivers and/or their impacts on biodiversity are numerous [33][34][35][36][37][38]; however, few papers explicitly deal with HMWBs and AWBs and use adapted assessment methodologies (e.g., [39]). For example, the Polish hydromorphological assessment methodology presented in Garbowski et al [23] does have lower score thresholds for AWBs, but it does not determine MEP or take into consideration mitigation measures, as we did in this study.…”

Section: Challenges In Assessing Hydromorphological Conditions Of Hmw...mentioning

confidence: 99%

Methodological Framework for Assessing Hydromorphological Conditions of Heavily Modified and Artificial River Water Bodies in Croatia

Pavlek

Plantak²,

Martinić

et al. 2023

Water

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Water Framework Directive (WFD) guidance documents from 2019 provide a comprehensive review of methods and guidelines to improve the comparability of heavily modified water bodies (HMWBs) in the European Union. However, there is currently no common, single methodology for monitoring HMWBs and artificial water bodies (AWBs) or for determining maximum (MEP) and good ecological potential (GEP). This study presents the first assessment of hydromorphological conditions of HMWBs and AWBs in Croatia based on type-specific indicators. The typology of HMWBs and AWBs was based on distinct hydromorphological characteristics and modifications in order to be easily related to the uses of the water bodies. The classes of hydromorphological potential were graded from the theoretical MEP, which was determined by the score scale as the tolerated deviation from natural reference conditions, considering potential mitigation measures. The use of the water body and/or the effects on the wider environment were considered while determining MEP and choosing indicators included in monitoring and assessment. In the case of AWBs, the parameters dependent on natural reference conditions, which are non-existent, were omitted from the assessment. Only 27% of HMWBs and 2 out of 51 AWBs achieved good potential for all three hydromorphological elements. The most significant hydromorphological modifications include channelization, straightening, deepening and removal of riparian vegetation due to flood-protection management practices. In order to achieve the environmental objectives set out by the WFD, the Croatian water management system has to start implementing mitigation measures, especially related to natural flood management.

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Impact of recent floods on river morphology of Upper Krishna River: a decadal analysis using remote sensing approach

Choudhary,

Azhoni,

Devatha

2024

Environ Earth Sci

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Assessment of river alteration using a new hydromorphological index

Cited by 6 publications

References 19 publications

The impact of the geographical environment on the hydromorphological conditions of watercourses in southern Poland

The impact of the geographical environment on the hydromorphological conditions of watercourses in southern Poland

Methodological Framework for Assessing Hydromorphological Conditions of Heavily Modified and Artificial River Water Bodies in Croatia

Impact of recent floods on river morphology of Upper Krishna River: a decadal analysis using remote sensing approach

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