Brewster sockeye fishing off the mouth of the Okanogan river where it joins the upper Columbia is a great way to introduce children and anglers of all ages to sockeye fishing. We fish the Brewster pool sockeye from early July through the end of the season that varies from year to year. There is no set season or limit for Sockeye in the upper Columbia, it all depends on how many fish come back. Brewster sockeye average 2 to 5 LBS.