Flat Lake   Be the first to submit input for Flat Lake. If you have info on Flat Lake, Grant County, Washington please submit it here to improve this web site.          These outdoors activities are available near Flat Lake.   Public Lands Near Flat Lake: Lake Lenore Caves State Park, Washington, 31 miles away Lincoln Rock State Park, Washington, 33 miles away Wenatchee Confluence State Park, Washington, 34 miles away   Camp Grounds Near Flat Lake: Quincy Valley Golf, Quincy, 1 miles away Post Road Trailer Court, George, 3 miles away Basecamp, Quincy, 4 miles away Shady Tree RV Park, Quincy, 4 miles away   Hotels Near Flat Lake: The Crescent Hotel, Quincy, 5 miles away Cave B Inn Spa, Quincy, 7 miles away Best Western Rama Inn, Ephrata, 23 miles away Ephrata Travelodge, Ephrata, 25 miles away Cedars Inn, East Wenatchee, 31 miles away   Whitewater Near Flat Lake: Sand Hollow Creek, GrantCounty, 10 miles away       Class III-IV - 1.5 miles long (Highway 26 mile 2 to Columbia River)