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  • BSI
    BS EN 15843:2025 Water quality. Guidance standard on determining the degree of modification of river hydromorphology
    Edition: 2025
    $468.02
    / user per year

Description of BS EN 15843:2025 2025

This document provides guidance on characterizing the modifications of river hydromorphological features described in EN 14614:2020. Both standards focus more on morphology than on hydrology and continuity, and include a consideration of sediment and vegetation. This document will enable consistent comparisons of hydromorphological forms and processes between rivers within a country and between different countries in Europe, providing guidance for broad-based characterization across a wide spectrum of hydromorphological modification of river channels, banks, riparian zones and floodplains. Although of lesser focus, it considers the indirect effects of catchment-wide modifications to these river and floodplain environments. Its primary aim is to assess ‘departure from naturalness’ as a result of historical and modern human pressures on river hydromorphology, and it suggests suitable sources of information (see EN 14614:2020, Table A.1) which may contribute to characterizing the modification of hydromorphological properties. In doing so, it does not replace methods that have been developed for local assessment and reporting. Decisions on river management for individual reaches or catchments require expert local knowledge and vary according to river type.

Standard NumberBS EN 15843:2025
TitleWater quality. Guidance standard on determining the degree of modification of river hydromorphology
StatusDefinitive
Publication Date2025-09-16
ReplacesBS EN 15843:2010
Identical National Standard OfEN 15843
DescriptorsWater flow, Water resources, Water supply, Water testing, Ground water, Rivers
ICS13.060.45 Examination of water in general, 13.060.45 Examination of water in general
CommitteeEH/3
ISBN978 0 539 32217 0
PublisherBSI
Pages32



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About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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