Dale Lentz. 2010. "Blue River Fish Barrier: Additional Physical Modeling to Optimize the Fish Barrier". Bureau of Reclamation, Report Number PAP-1021.
Abstract: Previously, two hydraulic models (one physical and one numerical) were used to assess and improve the design of a proposed fish barrier weir structure to be built on the Blue River in eastern Arizona approximately 0.5 miles upstream of the confluence with the San Francisco River (Lentz 2010; Russell 2010). The structure is being considered to block upstream movement of non-native fish. The models evaluated local scour expected to be caused by the structure as well as aggradation and degradation upstream and downstream from the barrier. Flow conditions during the 2-, 25- and 100-year discharges were simulated to determine the maximum amount of scour expected at the structure. The original physical model study recommended that a training wall be installed on the left side of the fish barrier to prevent localized scour from occurring on the toe of the structure. This technical memorandum details the additional physical modeling that was completed in an effort to optimize the fish barrier to reduce scour without using obtrusive physical features (such as the previously recommended training wall).
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