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 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 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 »

cbec is providing peer review as part of a revision of an EIS/R associated with a proposed development project at Grady Ranch, part of Skywalker Properties, Marin County, CA. The EIS/R is being undertaken by MCFCWCD. cbec staff has performed field geomorphic reconnaissance of Miller Creek and has conducted peer review of design strategies associated with restoration of this heavily degraded creek. The design of … Continue reading Grady Ranch EIS/EIR Review »

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 NMFS to construct a two-dimensional hydrodynamic model. The model is capable of quantifying steelhead migration suitability and habitat availability over a range of discharges for subsequent use by NMFS staff. The results of this study will be used to support the NMFS in evaluating the effects of Bradbury Dam on steelhead trout in the Santa Ynez River. MORPHO2D was used to … Continue reading Santa Ynez River Two-Dimensional Flow Model »

This project intends to improve fish and wildlife habitat, water quality, and recreational opportunities in Squaw Creek and its adjacent meadow by rehabilitating the natural hydrologic, geomorphic and ecological functions of the system. A variety of historic and ongoing anthropogenic modifications (e.g., watershed logging and ski resort development, grazing in the meadow, channel modifications, bank hardening, floodplain grading, hydrologic alteration, etc.) have degraded the functional … Continue reading Lower Squaw Creek Restoration Project »

cbec performed a geomorphic assessment of the lower Yuba River adjacent to the Yuba Goldfields. The focus of the effort was to assess the historic rates and predict future rates of lateral migration of the river and subsequent erosion of the training walls.  The training walls were built from unconsolidated gravel and cobble to confine the river to an alignment to the north of its … Continue reading Yuba Goldfields Fluvial Geomorphic Assessment »