Culvert Roughness Elements for Native Utah Fish Passage: Phase 1

摘要

Laboratory flume testing of native Utah non-salmonid fish was performed to observe how they use altered flow around obstacles to swim upstream. Three experimental setups included a bare Plexiglas flume, vertical cylinders, and natural substrate placed in the flume. It was found that substrate provides the most refuge for upstream swimming fish. Field tested results of these experimental findings in Phase II will allow engineers to take advantage of reduced velocity zones in retrofitted culvert design.