Culvert designs for aquatic organism passage : culvert design practices incorporating sediment transport.

PDFTech ReportTRS1302CulvertsBridge designAquatic lifeHabitat (Ecology)SedimentsMinnesotaMinnesota. Dept. of TransportationMinnesota. Dept. of Transportation. Research Services SectionNTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and StructuresNTL-HIGHWAY/ROAD TRANSPORTATION-DesignNTL-ENERGY AND ENVIRONMENT-ENERGY AND ENVIRONMENTUS Transportation CollectionThe design of culverts to accommodate aquatic organism passage (AOP) requires an understanding of organism habitatrequirements, swimming ability and migration needs, as well as an understanding of how a culvert design will perform in aspecific geomorphic context. This report documents existing reports on culvert design for AOP in Minnesota and nationally.The following review is designed to build upon the work of Hansen et al. 2009 and 2011 to: 1) summarize current aquaticorganism passage practices, 2) summarize aquatic organism passage needs for Minnesota species, 3) discuss the importanceof roughness or streambed sediment within a culvert in different systems (high, medium, or low slope) in single and multiplebarrel systems, and 4) summarize physical experiments of sediment transport and geomorphic processes through culverts