Fish Inlet/Outlet Design
Mesa County, Colorado
Western Water & Land was retained by a major sand and gravel operator to design a native fish inlet and outlet for an existing sand and gravel mine on the floodplain of the Colorado River. The project involves the design of a fish inlet and outlet for recovering native fish on the Colorado River. The inlet will allow for the flooding and development of propagation back water areas in the gravel mine pit.
The design is intended for annual sedimentation to occur in the pit lake during flood stages eventually leading to natural reclamation of the lake area. The agencies involved include the Colorado Division of Minerals and Geology, the U.S. Army Corps of Engineers, and the Colorado Department of Wildlife (Fish and Game Division). Inlet design will involve a hydrologic study of flood frequency, HEC-RAS modeling, MIKE21 modeling of river hydraulics, and channel sedimentation and erosion, and structure design (for annual and 100-year flood events). Surveying of several river transects was necessary to conduct the hydraulic analysis.
Mesa County, Colorado
Western Water & Land was retained by a major sand and gravel operator to design a native fish inlet and outlet for an existing sand and gravel mine on the floodplain of the Colorado River. The project involves the design of a fish inlet and outlet for recovering native fish on the Colorado River. The inlet will allow for the flooding and development of propagation back water areas in the gravel mine pit.
The design is intended for annual sedimentation to occur in the pit lake during flood stages eventually leading to natural reclamation of the lake area. The agencies involved include the Colorado Division of Minerals and Geology, the U.S. Army Corps of Engineers, and the Colorado Department of Wildlife (Fish and Game Division). Inlet design will involve a hydrologic study of flood frequency, HEC-RAS modeling, MIKE21 modeling of river hydraulics, and channel sedimentation and erosion, and structure design (for annual and 100-year flood events). Surveying of several river transects was necessary to conduct the hydraulic analysis.