With the summer Chinook run tracking significantly below pre-season expectations, retention of adult summer Chinook will close on the Columbia River mainstem downstream of Priest Rapids Dam on Saturday. Fishery managers from Washington and Oregon made the decision Wednesday. Retention of sockeye salmon, hatchery steelhead and jack Chinook remains open from the Astoria-Megler Bridge upstream to the Hwy 395 Bridge at Pasco. The daily adult bag limit is two adult salmonids, with only one hatchery steelhead, and five hatchery jack salmon. All sockeye are considered adults. With summer Chinook abundance lower than expected, the number of fish available to harvest in lower river recreational fisheries decreased by more than half, making a Chinook closure necessary. Chinook fishing will reopen for fall seasons on Aug. 1