Grays River is a small tributary of the Columbia River named for Captain Robert Gray, who discovered the Columbia (the river was named for his ship, the Columbia Rediviva). Seal Slough is a tributary of Grays River that enters it about 2 miles from its mouth.
Nearby Deep River feeds into Grays Bay about 2 miles west of the mouth of Grays River. All these segments are tidal. Washington’s only extant covered bridge lies on Grays River at RM 9.6, a mile above the upper extent of tidal influence. While this region is extremely rainy, it offers excellent birding and unique paddling opportunities through a historical landscape. Lewis and Clark camped briefly on the west shore of Grays Bay the fall of 1805.
© Verne Huser, Rich Landers, Dan Hansen, and Doug North/The Mountaineers Books. All Rights Reserved.