Yes, it is my understanding that the navigable waters act applies in Washington state "to navigable waters". Smaller bodies, creeks and such, may well have property rights to midstream.
Likewise, if one is fishing legally then such an owner harassing you is in fact breaking the law. It is unlawful to harass an otherwise legal fisher while fishing. RCW 77.15.210 (1a)(1b).
Last edited by watersprite; 10-15-2002 at 10:31 PM.