Archives

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 undertook work relating to the design of a culvert on the Nant Morlais stream in Dowlais, Merthyr Tydfil. An upgraded access track suitable for the transport of construction machinery was required in relation to works being undertaken at the Wales and West Utilities asset at the site. As part of this, the existing culvert that the Nant Morlais stream flows through and over (which … Continue reading Dowlais Culvert Assessment »

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 was contracted by Aberdeen City Council to restore the East Tullos Burn in Torry from a hard‐engineered straightened channel into a more natural stream and associated functional floodplain. An important design element was the creation of wetlands and associated off‐channel features to provide the same function as a Sustainable Urban Drainage Systems (SUDS), but in a more aesthetically pleasing and natural way. These features … Continue reading East Tullos Burn Restoration »

Swift Slough has been established as the primary habitat on the Apalachicola River System for several threatened and endangered (T&E) mussel species. Its hydrologic connectivity to the mainstem of the river during low flow periods (<6,500 cfs) is essential to the long-term viability of these species. The hydrologic connectivity of Swift Slough has been reduced by the incision of the main channel generally as a … Continue reading Apalachicola River Restoration Feasibility Analysis »

This project included modification of the naturally existing Sunrise Side Channel through topographic manipulation to increase the temporal availability of Central Valley Steelhead (Oncorhynchus mykiss) spawning habitat, and to reduce the opportunity for redd desiccation and subsequent egg mortality due to flow reduction. The project was led by the Sacramento Water Forum with support from US Bureau of Reclamation, Sacramento County Parks, CA Department of … Continue reading Lower American River – Sunrise Side Channel Design and Post-Project Performance Monitoring »

cbec was contracted by SFCWA to develop the largest restoration project in the Lower Yolo Bypass in Yolo County, California. The project is being completed in partial fulfillment of the contractors’ requirement to provide mitigation restoration for the endangered Delta Smelt. cbec undertook water quality monitoring/ bathymetric survey, performed 2D hydrodynamic modeling, and developed 100% design plans and specifications for the project, as described below. … Continue reading Yolo Ranch Tidal Wetland Restoration Project »

cbec performed hydraulic analysis of Upper Laguna Creek to support the design of flood mitigation measures during mining of the Triangle Rock Products’ expansion property south of Florin Road and east of Laguna Creek. As part of flood mitigation, Triangle Rock proposes to design and construct a weir to divert stormwater runoff from Upper Laguna Creek during large storm events into a storage basin. cbec … Continue reading Triangle Rock Weir Design »

cbec is currently assisting DWR (through a sub-contract with AECOM) to identify and prioritize potential restoration sites for the CVFPP. The project involves recently developed GIS techniques and the HEC-Ecosystems Function Model (EFM), developed by HEC in Davis, California, applied in support of the Restoration Opportunities Analysis, or ROA. This restoration project includes multi-objective design parameters. GIS techniques: cbec provided critical review of a method … Continue reading Central Valley Flood Protection Plan (CVFPP)- Identification and Prioritization of Potential Restoration Sites »