Sun Lakes-Dry Falls State Park (formerly, Sun Lakes State Park) is a public recreation area located at the foot of Dry Falls, three miles (4.8 km) west of Coulee City in Grant County, Washington.

The state park covers 3,774 acres (1,527 ha) along Route 17 at the head of the Lower Grand Coulee.

Fifteen parcels were purchased from the Bureau of Land Management, the Department of Natural Resources, and private interests.

The Civilian Conservation Corps built rock walls and a lookout at Dry Falls called Vista House in 1938.

[6] The park has 73,640 feet (22,450 m) of lake shoreline and offers fishing, swimming, boating, hiking, and golf.