According to the Washington State Parks website, the K2 Southeast Grant County boat ramp is located on the southeast shore of the Potholes Reservoir. It is a concrete boat ramp with a width of 21 feet and a length of 45 feet. The reservoir is a popular destination for boating, fishing, and water sports, and a variety of watercraft are permitted on the water, including motorized boats, kayaks, canoes, and sailboats. As of August 2021, there were no reported changes to the boat ramp or the regulations for watercraft use at Potholes Reservoir. Get driving directions.