Action: Close Cook (Koch) Slough (a side channel of the Stillaguamish River), the North Meander and the Stillaguamish River from where Cook Slough rejoins the Stillaguamish to 1,000 feet downstream to fishing.

Effective dates: July 18 through Oct. 15, 2011.

Species affected: All fish.

Closure location details:

• All of Cook (Koch) Slough (a side channel of the Stillaguamish River beginning approximately ½ mile west of Interstate 5). Closure area begins 350 feet upstream of the diversion dam and continues approximately 3.5 river miles to the downstream confluence with the Stillaguamish River.

• The North Meander, a side channel that connects the mainstem Stillaguamish with Cook Slough.

• The Stillaguamish River, from the downstream confluence with Cook Slough to 1,000 feet downstream.

Reason for action: The repair of an in-stream weir and fish ladder on Cook Slough require the installation of a cofferdam upstream of the weir and restriction of flows to 30 cubic feet per second through Cook Slough. A fish exclusion device at the downstream end will prevent fish from entering Cook Slough.

Other Information: If work finishes before Oct. 15 and flows are restored, Cook Slough will reopen before Oct. 15.

Information contacts: Jennifer Whitney, District 13 fish biologist, (425) 775-1311; Annette Hoffmann, Region 4 Fish Program manager, (425) 775-1311.

Fishers must have a current Washington fishing license. Check the current WDFW "Fishing in Washington" rules pamphlet or the Fishing section of the WDFW webpage at http://wdfw.wa.gov/fishing/regulations/ for details on fishing seasons and regulations. Fishing regulations are subject to change. Check the WDFW Fishing hotline for the latest rule information at (360) 902-2500; press 2 for recreational rules; call the Shellfish Rule Change hotline, (360) 796-3215, or toll free 1 (866) 880-5431.