The Humptulips River is located in the Olympic Peninsula and flows into Grays Harbor. Two decades ago the Humptulips River used to consistently produced monster steelhead and Chinook. Though fish of these sizes are rarer now due to deteriorating habitat conditions, this river is still known for its large fish. Look for coho to peak in October, Chinook around September, and then steelhead in the winter months. Access is optimal from a drift boat, but moderate from the bank. The ideal flow for the river is around 1200 cfs.