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cbec was contracted by Dartford Borough Council and South East Rivers Trust to produce restoration designs for an extended section of the River Darent in Acacia Hall and Central Park, Dartford, Kent. The river was significantly impacted through this stretch, with a concrete-lined channel and weir structure within the Acacia Hall reach and generally poor ecological quality and limited aesthetic appearance throughout. The project has involved the development of designs of a more natural, sinuous … Continue reading The River Darent, Acacia Hall/ Central Park, Dartford »

cbec was contracted by Aberarder Estate to develop detailed designs for the restoration of the upper River Nairn, having previously conducted geomorphic and ecological assessments of the site to determine a range of restoration options. Under natural conditions, the study site would have been a highly dynamic alluvial fan, possibly with multiple channels. However, because of the historical engineering undertaken for land management purposes, natural … Continue reading The River Nairn at Aberarder »

In 2014, cbec was contracted by E-CO to undertake an options appraisal on a ~ 7 km reach of the River Hallingdalselva, nr. Gol, Norway. The study reach is impacted by pressures associated with river regulation for hydropower, including the absence of the natural flow conditions that drive the creation of optimum salmonid habitat. Habitat within the study reach is also affected by the presence … Continue reading Hallingdalselva Habitat Enhancement »

cbec led a team to develop a prioritised catchment restoration plan on the River Naver, Sutherland. The primary objective of the project was, through reinstatement of natural geomorphic processes, to improve habitat conditions for Freshwater Pearl Mussels while achieving other ecosystem services, notably maintenance of ‘good ecological status’ and sustainable flood risk management. Stakeholder consultation and community engagement were key stages in development of the … Continue reading River Naver Catchment Restoration »

cbec was contracted by the Tweed Forum to design measures to stabilise a section of eroding bank on the Wooler Water, Northumberland. The Wooler Water is a highly dynamic gravel-bed river and large flood events in 2008 and 2009 resulted in extensive channel adjustment. At the site in question, the river avulsed into a new location, resulting in the active erosion of a 140 m … Continue reading Wooler Bank Stabilisation »

cbec have developed detailed restoration designs for a reach of the River Nith at Castlemains, New Cumnock. This reach was prioritised for restoration in the first phase of SEPA’s pilot catchment project because of the potential benefits of restoration to its Water Framework Directive (WFD) status for morphology and to natural flood management (NFM). Options within each sub-section of the reach were identified and assessed … Continue reading SEPA Pilot Catchment Project – Options Appraisal and Outline Design – River Nith (Castlemains, New Cumnock) »

cbec was contracted by Dundee University and the Tweed Forum to provide the joint benefits of improving the ecological status (through river restoration) and natural flood management (NFM) of the Eddleston Water, a tributary of the River Tweed in the Scottish Borders. We initially conducted a geomorphic assessment in 2010 to assist in the development of an ecologically-sensitive catchment management plan and sustainable flood alleviation … Continue reading Eddleston Water Restoration at Cringletie, Lake Wood and Shiphorns »

cbec applied a full ‘process restoration’ strategy on a tributary of the River Dulnain, with the aim of reinstating dynamic geomorphic and ecological processes. We identified the dominant constraints to natural process and implemented associated measures to reduce these. This involved the addition of large wood and gravel augmentation and the removal of flood embankments. Assessments of sediment transport processes guided the optimal locations for … Continue reading Allt Lorgy Restoration »

This project is a follow-on project to the recently constructed Bear River Levee Setback project although it is approximately three times the size of the Bear River project in terms of setback area and length of new levee (length of new levee = 5.7 miles). Dr. Bowles was the project director under a previous company (not cbec) for the geomorphic and ecosystem enhancement section of … Continue reading Feather River Levee Setback Project »

cbec was contracted by NCPA to perform a Sedimentation Rate Study at McKay’s Point Reservoir. cbec performed a bathymetric survey to document existing conditions in October 2011 and developed a set of plan drawings. The existing conditions data was compared to previous bathymetric surveys performed in 1997, 2000, and 2005, and used to characterize sedimentation rates of the reservoir. Stage versus storage volume relationships were … Continue reading McKay’s Point Reservoir Sedimentation Rate Study »