Upper Midwest Environmental Sciences Center
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Behlke, C. E., D. L. Kane, R. F. McLean and M. D. Travis (1993). Fundamentals of culvert design for passage of weak-swimming fish. Alaska Department of Transportation and Public Facilities, Report FH WA-AK-RD-90-10.
This manual presents design procedures to pass upstream-migrating, weak-swimming fish. The manual also displays criteria for retrofitting existing culverts.