 So many Chinooks died around Willapa Bay in the 1850s that the Chehalis moved in to take their place.In 1855, after the creation of Washington Territory, the Quinault Treaty was signed by Chief Taholah of the Quinault and Chief How-yat'l of the Quileute, along with many other tribal delegates.One result of the treaty was the creation of the roughly triangular shaped Quinault Indian Reservation between the Pacific Ocean and Lake Quinault.