Research and analysis

Hydropower: assessment of the impact on weir pool habitats

Evaluation of run-of-river hydropower schemes affecting weir pool habitats found immediately downstream of weirs.

Documents

Assessment of the impact of hydropower on weir pool features: report

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Assessment of the impact of hydropower on weir pool features: appendix

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Assessment of the impact of hydropower on weir pool features: summary

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Details

Run-of-river hydropower schemes are often installed on existing weir structures. The Environment Agency has evaluated how such installations can affect the weir pool habitats found immediately downstream of weirs.

A literature review found no specific studies on weir pools as ecosystems. Consequently, a modelling study to predict how the characteristics of these locations may change was undertaken. A framework was also produced for evaluating the potential value of weir pools to help assess the impact of proposed hydropower developments on weir pool habitats.

Published 24 July 2015