Case Studies
White-Clawed Crayfish Survey
Our Natural England licensed ecologists undertook white-clawed crayfish baseline surveys required for option appraisal of a highway infrastructure scheme. Manual search and trapping methodology was used to survey two water bodies for our native species of crayfish.
ViewRiver Restoration, Upper Wensum Phase Three
Five Rivers undertook the third construction phase of river and floodplain restoration works on the Upper River Wensum Site of Special Scientific Interest (SSSI) and Special Area of Conservation (SAC), to reinstate natural form and flow within the River Wensum, benefiting local ecology and the environment. This follows initial phases successfully completed in 2015 and 2016.
ViewPentney Abbey River Restoration, River Nar
This project was successfully delivered for Anglian Water as part of their AMP6 National Environment Program (NEP) commitments. We installed bed narrowing structures and riffles along a 2.7km reach of the River Nar SSSI at Pentney Abbey, Norfolk. This river restoration project improved on the existing over widened, flat and featureless bed. The project delivered fish habitat improvements, flow diversity and improved wet margin ecosystems.
ViewFlex MSE installation River Test, Romsey
Five Rivers Environmental Contracting were contracted to replace the failing wooden revetment with Flex MSE on River Test SSSI. This system allows walls to be built using Flex MSE bags. These bags can be planted in and hydro-seeded, creating a long lasting, green structure that will prevent the loss of river bank from erosion.
ViewWarminster Park River Restoration
Five Rivers were contracted to restore a section of river in Warminster park. We removed 300m of failing wooden revetment and replaced with bioengineering solution.
ViewBristol Avon Riverbank Repair
Bank protection and oak cladding for residential re-development project on the Bristol Avon, innovative re-use of large woody material to main habitat benefits.
ViewErosion protection on the River Nadder
Five Rivers Environmental Contracting were contracted to install bio-engineered bank erosion protection to prevent on the River Nadder
ViewAbstraction monitoring
Our team carried out aquatic monitoring required to investigate the impact of abstraction. Our multidisciplinary team of ecologists undertook fully quantitative electric fishing, macrophyte surveys using LEAFPACS2 methodology and macroinvertebrate sample collection across two seasons. Our high quality data will be used to inform water resource management decisions.
ViewLarge scale fish removal
Large scale fish removal delivered on behalf of a utility company, required as part of a water recycling centre upgrade. Using a range of fish sampling methodology fish were removed from eight lagoons and trans-located to a receptor recreational fishery.
ViewRock Ramp Fish Pass Sheep’s Green
Ambitious project to provide multi-species fish passage through the center of Cambridge through installation of rock ramp fish pass and in river habitat improvements in a busy urban park. Fish passage improvement is on one of the many tools to improve Water Framework Directive status and provided important connectivity for previously fragmented fish populations.
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