- Columbia Hills
- Columbia Hills State Park (which includes the Horsethief Lake area and Dalles Mountain Ranch area) is a 3,338-acre camping park with 7,500 feet of freshwater shoreline on the Columbia
- Columbia National Wildlife Refuge
- Columbia Refuge is a scenic mixture of rugged cliffs, canyons, lakes, and sagebrush grasslands. Formed by fire, ice, floods, and volcanic tempest, carved by periods of extreme violence of
- Columbia Plateau Trail
- Columbia Plateau Trail State Park is a 4,109-acre, 130-mile-long rail-bed trail that traces the 1908 original path of the Spokane, Portland and Seattle Railroad. The route is most accessible
- Colville National Forest
- A sense of peace and solitude is what you feel when traveling through the Colville National Forest's scenic 7,000-foot mountains and beautiful valleys, hiking the trails, or camping by
- Conboy Lake National Wildlife Refuge
- Conboy Lake National Wildlife Refuge, one of the hidden jewels of the Refuge System, is located on the east slope of the Cascade Mountains at the base of 12,307-ft.
- Conconully Lake/Conconully Reservoir
- Conconully Dam and Reservoir, features of the Okanogan Project, are on Salmon Creek. The dam was originally completed in 1910. Both the lake and reservoir are located
- Conconully State Park
- Conconully State Park is an 81-acre camping park with 5,400 feet of freshwater shoreline in north central Washington. Established as the oldest Bureau of Reclamation irrigation project in this
- Crawford State Park
- Crawford State Park is a 49-acre, forested day-use park featuring Gardner Cave, the third longest limestone cavern in Washington. This tourable cave is filled with stalactites, stalagmites, rimstone pools
- Curlew Lake State Park
- Curlew Lake State Park is a 123-acre camping park. It borders an air field, is eight miles from a public fossil dig and is also near an active osprey
- Cutts Island State Park
- Cutts Island is a two-acre marine park situated on Carr Inlet. During low tide, the island has a very nice sand beach. The island features clay cliffs that allow
- Damon Point State Park
- Damon Point, a 61-acre day-use park, is the southeastern tip of the Ocean Shores Peninsula. The park consists of a one-mile-long, half-mile-wide stretch of land jutting out into the
- Daroga State Park
- Daroga State Park is a 90-acre camping park with 1.5 miles of Columbia River shoreline on the elevated edge of the desert "scablands." The park features camping activities and
- Dash Point State Park
- Dash Point State Park is a 398-acre camping park with 3,301 feet of saltwater shoreline on Puget Sound. The beach provides unobstructed views of the Sound and excellent opportunities
- Deception Pass State Park
- Deception Pass State Park is a 4,134-acre marine and camping park with 77,000 feet of saltwater shoreline, and 33,900 feet of freshwater shoreline on three lakes. Rugged cliffs drop
- Desert Wildlife Rec. Area
- This area includes Winchester Reservoir, Winchester Wasteway, Frenchman Hills Wasteway, and numerous small ponds and marshes. Fishing is year-round for yellow perch, crappie, largemouth bass, smallmouth bass, and
- Dosewallips State Park
- Dosewallips State Park is a 425-acre, year-round camping park with 5,500 feet of saltwater shoreline on Hood Canal and 5,400 feet of freshwater shoreline on either side of the
- Doug's Beach State Park
- Doug's Beach State Park is a 400-acre, undeveloped day-use park on the Columbia River. This is one of the premier windsurfing sites in the Columbia Gorge and is rated
- Douglas Creek
- In the dry sage-steppe uplands of Eastern Washington, Douglas Creek forms a unique riparian oasis. In the basalt canyon, songbirds and raptorsperch in cottonwoods, and the road paralleling the
- Eagle Island State Park
- Eagle Island is a 10-acre marine park with 2,600 feet of saltwater shoreline. The island sits on Balch Passage between McNeil and Anderson islands in South Puget Sound. Visitors
- Easton Diversion Dam
- Easton Diversion Dam, Yakima Project, is located on the Yakima River near the town of Easton, Washington the area has 112 acres of land, 240 water surface acres and
- Ebey's Landing National Historical Reserve
- Ebey's Landing National Historical Reserve provides a vivid historical record of Pacific Northwest history, including the first exploration of Puget Sound by Captain George Vancouver in 1792; early settlement
- Fay Bainbridge State Park
- Fay Bainbridge State Park is a 17-acre marine camping park with 1,420 feet of saltwater shoreline on the northeast corner of Bainbridge Island. The park offers sweeping views of
- Federation Forest State Park
- Federation Forest State Park is a day-use natural area with 619 acres of old growth evergreens. Located along the White River, the park provides visitors with 12 miles of
- Fields Spring State Park
- Fields Spring State Park is a 792-acre forested camping park remotely located in the Blue Mountains of Southeastern Washington. A portion of the park sits at a height of
- Flaming Geyser State Park
- Flaming Geyser State Park is a 480-acre day-use park with more than three miles of freshwater shoreline on the Green River. The park's most unique feature is its "geysers"
- Folsom Farm Site
- Folsom Farm consists of an early 1900's homestead overlooking Smick Meadows, a renovated marsh. From a scenic overlook, visitors can observe wildlife, including nesting waterfowl, deer, raptors, amphibians, and
- Fort Casey State Park
- Fort Casey State Park is a 467-acre marine camping park with a lighthouse and sweeping views of Admiralty Inlet and the Strait of Juan de Fuca. A coast artillery
- Fort Columbia State Park
- Fort Columbia State Park is a 593-acre day-use historical park with 6,400 feet of freshwater shoreline on the Columbia River. The park celebrates a military site that constituted the
- Fort Ebey State Park
- Fort Ebey State Park, a 645-acre camping park on Whidbey Island, was originally built as a coastal defense fort in World War II. Concrete platforms mark the gun locations.
- Fort Flagler State Park
- Fort Flagler State Park is a 784-acre marine camping park surrounded on three sides by 19,100 feet of saltwater shoreline. The park rests on a high bluff overlooking Puget
