Inlet Engineering Toolbox

HY-8 User Manual (v7.5) - Aquaveo

HY-8 7.4 incorporates stream simulation aquatic organism passage, as described in Hydraulic Engineering Circular No. 26 (HEC-26) . HY-8 7.5 incorporates Low Flow Hydraulics, as described in Fish Passage in Large Culverts with Low Flows . HY-8 automates the design methods described in HDS No. 5, "Hydraulic Design of Highway Culverts", FHWA-

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