Rainbow Falls State Park is a 139-acre Washington state park located near the town of Dryad. Rainbow Falls might possibly be the most disappointing waterfall in the Pacific Northwest, at least as far as the two RV Gypsies are concerned.
The falls occur within the Chehalis River where it intersects a low bench of basalt and skips about 5 feet downward in a gradual slide. The feature resembles more of a rapid than a waterfall (at high water this is a much more obvious trait.
Should you desire to waste your time at Rainbow Falls (even though it cost to get into the state park), the falls and park can be found along Highway 6, east of Pe Ell. Drive south from Olympia along I-5 to the signed exit for Rainbow Falls State Park. Turn right onto Highway 6 and drive about 16 miles west to the park. The falls are adjacent to the bridge crossing the Chehalis River which leads to the campground.