Removal of a redundant gauging weir on the River Ribble at Samlesbury. The weir was a concrete flat V type weir with two baffle walls, with the downstream weir face finishing with a vertical face at the apron. On the right-hand bank there was a stilling well and land drainage outlet, the stilling well was filled and capped. Works were completed from left hand bank to reduce ground disturbance to Brockholes Nature Reserve site. The banks immediately adjacent to the site were reprofiled after the removal of the weir in keeping with the natural gradient of surrounding banks. The left-hand bank was reprofiled 100m up from the removed structure to reinstate riverbank and mitigate erosion potential from water level reductions. Through this project, we salvaged and recycled the arisings from the concrete weir and crushed it off-site to create recycled 6F2 sub-base material that was used on various other projects. 

The works were to construct a fish pass on the River Darwen. 

This project delivered a  fish pass solution and commenced the programme of returning anadromous fish and catadromous fish to the River Darwen. The sloped faced weir constructed of concrete is over 3m high and was constructed to feed a mill. A new river channel was constructed in the grassland on the north side of the weir and around 10% of flow was redirected, bypassing the weir and allowing migrating fish to access the river upstream.

This project was the construction and formation of a fish pass solution. Pincroft Weir is a low-head weir located on the River Douglas downstream of the Pincroft Dyeworks in Adlington. The weir was acting as a barrier to fish migration especially in low flows. The works were to create a rock ramp fish easement with a low flow channel to address the partial barrier to fish migration. The rock ramp was formed using various sized boulders and stone bedded into concrete.