Lower Columbia River Geographic Response Plan (LCR-GRP)
The Lower Columbia River GRP covers the waters from the river’s mouth at the Pacific Ocean to the Bonneville Dam at river mile 145. Tributaries below the Bonneville Dam include the Youngs, Lewis and Clark, Skipanon, Chinook, Grays, Deep, Wallacut, John Day, Clatskanie, Cowlitz, Lewis, Kalama, Lake, Willamette, Sandy, and Washougal Rivers, as well as hundreds of creeks, streams, and sloughs. The coverage area includes the USFWS Ridgefield, Lewis and Clark, Franz Lake, and Steigerwald National Wildlife Refuges, as well as the Julia Butler Hansen Refuge for the Columbia White Tailed Deer. Numerous state parks and recreation areas are located within the area, and many cities including Astoria, St. Helens, and Portland in Oregon, and Cathlamet, Longview, Vancouver, and Washougal in Washington are situated along the river’s banks. The river forms the boundary between the States of Washington and Oregon.
View the Lower Columbia River GRP (October 2015) (PDF 42.9 MB)
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