Session A3- culvert Design for aquatic organism passage

TL;DRAbstract

The Federal Highway Administration recently published Hydraulic Engineering Circular (HEC) 26 “Culvert Design for Aquatic Organism Passage.” This new stream simulation design procedure yields hydraulic and sediment mobility conditions within an embedded culvert that are similar to those found upstream and downstream of the crossing over a wide range of flow rates. By simulating the depth, velocity, and sediment transport capabilities of the channel over the site-specific range of passage discharges, it is reasonable to infer that aquatic organisms, such as fish, that are capable of passing up and down the channel ·will also be able to pass through the culvert. Species-specific information on swimming capabilities or behaviors is not required. The presentation will provide background and an overview of the 13 -step design procedure, which is the core of the HEC 26 design manual. Detailed technical information supporting the methods used ·within the design procedure and several des

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