s2ary
02-27-2008, 02:23 PM
This is a good reference for stream slope and native fish migration.
Some of the bypass channels slated for fish migration are as gradual as 1% so that the channel will pass the existing fish population. In my opinion we should be pushing for steeper passages to limit the migrations of non native species like LMB and other panfish.
http://www.treesearch.fs.fed.us/pubs/2780
Some of the bypass channels slated for fish migration are as gradual as 1% so that the channel will pass the existing fish population. In my opinion we should be pushing for steeper passages to limit the migrations of non native species like LMB and other panfish.
http://www.treesearch.fs.fed.us/pubs/2780