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.