Grass Lake   Be the first to submit input for Grass Lake. If you have info on Grass Lake, Olympic Mountains, Mason County, Washington please submit it here to improve this web site.          These outdoors activities are available near Grass Lake.   Lakes Near Grass Lake: Mason Lake, Mason County, 6 miles away Upper Elk Lake, Mason County, 10 miles away Lake Cushman, Mason County, 13 miles away Mildred Lakes, Mason County, 20 miles away   Public Lands Near Grass Lake: Twanoh State Park, Washington, 4 miles away Potlatch State Park, Washington, 9 miles away Belfair State Park, Washington, 11 miles away Olympic National Park, Port Angeles - WA, 44 miles away   Marinas On or Near Grass Lake: Jarrell's Cove Marina, Shelton, 12 miles away Fair Harbor Marina, Grapeview, 14 miles away Pleasant Harbor Marina, Brinnon, 14 miles away Home Port Marina, Brinnon, 15 miles away Boston Harbor Marina, Olympia, 15 miles away   Camp Grounds Near Grass Lake: Summertide Resort, Tahuya, 3 miles away Robin Hood Cottages, Union, 4 miles away Lake Trask Timber Trails Assn, Grapeview, 5 miles away Rest-a-while, Hoodsport, 6 miles away   Hotels Near Grass Lake: Alderbrook Resort and Spa, Union, 5 miles away Super 8 Shelton, Shelton, 10 miles away Phoenix Inn Suites Olympia, Olympia, 19 miles away Governor Hotel, Olympia, 19 miles away Capitol Plaza Hotel, Olympia, 19 miles away   Hiking Trails Near Grass Lake: Mount Jupiter Trail, Jefferson County, 14 miles away        12 hiking miles, 3830 feet elevation difference   Whitewater Near Grass Lake: Jefferson Creek, MasonCounty, 10 miles away       Class V - 2.1 miles long (Elk Lake to Hamma Hamma) Hamma Hamma River, MasonCounty, 11 miles away       Class III-IV - 5 miles long (Hamma Hamma Campground to gorge) Duckabush River, JeffersonCounty, 13 miles away       Class IV - 6.2 miles long (2515 Bridge to Highway 101)