Wash. Rev. Code § 77.15.320
(1) A person is guilty of unlawful failure to provide, maintain, or operate a fishway for dam or other obstruction if the person owns, operates, or controls a dam or other obstruction to fish passage on a river or stream and:
[ 2009 c 333 s 4; 2000 c 107 s 241; 1998 c 190 s 54.]