Case Studies

Renaturalisation of an Urban Chalk Stream

This project was focused on restoration of the River Wye in Desborough Recreation Ground, High Wycombe. Fish passage was improved by removing the ineffective concrete fish pass and extending the channel to create a new meander to reduce the gradient. The hard concrete banks were removed and a diverse soft two-stage channel created. Banks, berms and other features were planted to allow for the rapid establishment of marginal vegetation and in-river works created a combination of pinch points, riffles and pools at selected points.

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River Habitat Restoration – Notton and Sydling

This project was aimed at improving habitat diversity by installing large woody debris and re profiling the steep banks. A straightened by-pass channel was enhanced along the River Frome by re-profiling and re-meandering the channel and installing a re-designed water control structure. Fish passage was improved by the new structure and fish nursery invertebrate habitats were created by the enhancement of the re-meandered back channel.

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Habitat Improvements on the River Avon

This project was aimed at improving the habitat of a mill stream for roach by the removal of scrub, re-profiling of sections of the channel banks and installation of deflectors. The re-profiled sections, using specialist excavators, created warm bays for fry. The log deflectors created some flow and velocity diversity.

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Wetland Restoration at Witherington Farm

This project was aimed at enhancing a significant area of derelict water meadow to provide wetter habitat for breeding waders as part of the farm’s Higher Level Environmental Stewardship Scheme. The remnant water meadow channels were lightly excavated and interlinked, while low-points in the ridges made up to level. A new water inlet was created to provide a level of water that is critical to maintaining the required damp conditions into the early summer.

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