Clark (more commonly called Keller Ferry) is an unincorporated community at the bottom of the Hellgate Canyon in Lincoln County, Washington. Most buildings in the community are grouped around the Keller Ferry Campground at the south side of the Keller Ferry crossing. There are several businesses, including a car repair shop and a convenience store. Clark Does not appear on most maps anymore, but it did at one time.
The community is located on Lake Roosevelt/Columbia River, just south of the Lake Roosevelt National Recreation Area. To the north of Clark is the Columbia River and Keller. South of Clark is Wilbur. To the east is Hanson Harbor.