Ike Kinswa State Park sits on the shores of Mayfield Lake in southwest Washington, managed by Washington State Parks and Recreation Commission and open year-round. The campground spreads across multiple loops, with full hookups available in loop A, partial hookups in loop D, and tent-friendly sites in loop C, which also houses the park's rentable cabins. Sites are generously sized with long paved driveway pads, and the heavy tree cover provides solid separation between neighbors, though campers with slide-outs should account for the tight wooded approaches. Several sites in the hookup loops and along loop C face the lake directly.
Water access is the defining draw here. Mayfield Lake supports motorboating, kayaking, paddleboarding, fishing, and swimming in designated areas, and the park has its own boat launch. A trail skirts the lake from the campground, running a little over a mile point to point with multiple access points from the loops. It's rocky with exposed tree roots, so sturdy footwear helps. Christie P. notes the hikes north from the campground along the Tilton River as worth adding to the itinerary. The day-use beach and playground are located across the main road from the campground, not on the camping side.
Bathhouse facilities are dated and small, typically two toilet stalls and two showers per building. Shower availability and cost have varied across visits, with some reviewers reporting token-operated showers at 50 cents per three minutes and others noting free warm showers, so it's worth confirming current policy before arrival. Cell service is workable for Verizon users and acceptable for T-Mobile, though not strong enough to rely on for data-heavy tasks. The campground is well-staffed, with rangers patrolling regularly. Nearby, Harmony Lakeside RV Park and Mayfield Lake Park provide additional options on the same lake system for those who can't get a reservation here.
Crowds are real, especially on holiday weekends. Hookup sites fill fast. Reservations carry an $8 online fee and are strongly worth it, particularly from late spring through summer. Off-season visits in spring and fall tend to draw fewer people, and the campground stays open all year. Campers who prefer quieter nights and more elbow room should consider a weekday stay or a visit outside peak summer months.
RV Road Trip Guides
Map & DirectionsIke Kinswa State Park Campground is located in Washington near Mossyrock
Directions
From I-5: Take Exit 68 and proceed east on US HWY 12 for approx. 14 miles to Silver Creek. Turn left onto State Route 122 and travel approx. 4 miles to the park entrance.
Address
873 Harmony Rd
Silver Creek, WA 98585
Coordinates
46.56756352499366 N
122.53184632715647 W
Connectivity
- T-MobileLTESome Coverage
- VerizonNo CoverageVerified by 1 user
- AT&TNo CoverageVerified by 2 usersLast on 7/24/26
Connectivity
- T-MobileLTESome Coverage
- VerizonNo CoverageVerified by 1 user
- AT&TNo CoverageVerified by 2 usersLast on 7/24/26
Access
- Drive-InPark next to your site
- Walk-InPark in a lot, walk to your site.
- Boat-InSites accessible by watercraft.
Site Types
- Tent Sites
- RV Sites
- Standard (Tent/RV)
- Group
- Cabins
- Tent Cabin
Features
For Campers
- ADA Access
- Trash
- Picnic Table
- Firewood Available
- Phone Service
- Reservable
- Showers
- Drinking Water
- Electric Hookups
- Toilets
- Alcohol
- Pets
- Fires
For Vehicles
- Sanitary Dump
- Sewer Hookups
- Water Hookups
- Pull-Through Sites
- 50 Amp Hookups
- Big Rig Friendly
Drive Time
- 49 min from Longview, WA
- 51 min from Olympia, WA
- 1 hr 23 min from Portland, OR
- 1 hr 42 min from Bremerton, WA





















































