Wash. Admin. Code § 220-312-100
The Washington department of fish and wildlife shall administer a bounty voucher program for Northern pikeminnow (Ptychocheilus oregonensis) taken by legal fishing methods, in waters open to fishing, from the mouth of the Columbia River to the boundary markers 650 feet below the fish ladders at Priest Rapids Dam; from the mouth of the Snake River to the boat restricted zone below Hells Canyon Dam, and from the backwaters and sloughs as well as up to 400 feet into the tributaries of the reaches listed above on the Columbia and Snake rivers. The following requirements must be met to qualify for a voucher:
[Statutory Authority: RCW 77.04.012, 77.04.013, 77.04.020, 77.04.055, and 77.12.047. WSR 17-05-112 (Order 17-04), recodified as § 220-312-100, filed 2/15/17, effective 3/18/17. Statutory Authority: RCW 77.04.012, 77.04.055, 77.12.045, and 77.12.047. WSR 15-11-042 (Order 15-126), § 232-12-166, filed 5/14/15, effective 6/14/15. Statutory Authority: 1998 c 191 and RCW 75.08.080. WSR 99-03-029 (Order 99-02), § 232-12-166, filed 1/13/99, effective 2/13/99. Statutory Authority: RCW 77.12.040. WSR 94-09-019 (Order 632), § 232-12-166, filed 4/14/94, effective 5/1/94; WSR 93-10-013, § 232-12-166, filed 4/23/93, effective 4/30/93.]