Mayfield is about 15 miles north of Longview- then 25 miles east on Hwy 12.
Just under 2 hours from the 205 bridge.
Yes, we knew they were there. There's a sign at the fee box that says to please consider releasing all that are caught- although you are allowed one over 50 inches!
Lake Merwin also has muskie. That's the only two places I know of around here.
Jim
edit: I just read that a 32" tiger muskie was caught in the Willamette in Oregon CIty in May of 2000. My understanding is though that they are a hybrid and sterile, so no chance of proliferating. Probably a bucket biologist put it in there.
Here's a quote from another story:
June 2009, According to Bolding, all seven of Washington’s musky lakes — Merwin, Mayfield, Tapps, Evergreen, Curlew, Silver and Newman — got their full allotment of “big, healthy-looking” 13 1/2-inch tigers this spring.
A guy caught a 48 1/2 incher, 37lbs.in May of '09.