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  cbec was contracted by Natural England to investigate opportunities available for restoration of the upper River Derwent and Stonethwaite Beck in Borrowdale, Cumbria. A desk-based literature review was followed by a fluvial audit of the site. Our team also conducted a detailed topographic and bathymetric survey of 2.2km of main channel and tributary, employing the use of RTK-GPS, Trimble S6 total station technologies as … Continue reading River Derwent Feasibility Study »

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 »

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, inc. was contracted by MacKay & Somps, at the suggestion of Sacramento County DWR, to assess hydromodification impacts of the planned Glenborough at Easton development on Alder Creek. Modified Draft Sacramento Stormwater Quality Partnership (SSQP) Hydromodification Management Plan (HMP) performance criteria were applied to hydraulic model results from long-term continuous simulations developed for existing and project conditions. The hydromodification assessment for Glenborough at Easton … Continue reading Alder Creek Hydromodification Impacts Assessment »

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 »

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 »

Branciforte Dam is located on Branciforte Creek, a tributary to the San Lorenzo River. The overarching objective of the project was to remove a relic dam such that natural hydrologic, geomorphic and biologic processes could function as they did prior to dam construction, while limiting any unnecessary impacts to the surrounding environment.  The 8 foot tall concrete arch dam was no longer used for its … Continue reading Branciforte Dam Removal Design »

College Lake is a naturally occurring ephemeral water body located along Salsipuedes Creek, a tributary to the Pajaro River in Santa Cruz County, California. In the current condition, the lake is managed so that it is inundated during the rainy season, and then is pumped dry in the early spring so that farming can occur on the lake bed. A number of agencies have expressed … Continue reading College Lake Improvement and Watershed Management Project »