Ike Kinswa State Park

Boating features

Located in Lewis County on Mayfield Lake, Ike Kinswa now has paved parking and two launch lanes. Forty feet of handling dock. This is a busy lake with lots of water-skiing and personal watercraft activity during the warmer months.

Launching a boat at a state park requires one of the following:

• An annual launch permit (Natural Investment Permit; or
• An annual Discover Pass and a daily launch permit; or
• A one-day Discover Pass and a daily launch permit. A daily watercraft launching permit for $7 and a trailer dumping permit for $5 is available at the park. Annual permits also may be purchased at State Parks Headquarters in Olympia, at region offices, online, and at parks when staff is available.

Boat launch

Latitude: 46º 33' 49.68" N (46.5638)
Longitude: 122º 31' 55.55" W (-122.5321)

Campsite information

The park has 27 standard campsites, sites, 72 partial hookup sites, nine cabins, an RV dump station, four restrooms and 10 showers. Maximum site length is 60 feet (limited availability). Campsites 42 - 73 and cabins 1 - 9 are available for reservation year round. Campsites 1 - 41 and 74 - 101 are closed from Oct. 1 - May 1. The RV dump closes in the winter season. The winter freshwater supply is located at the RV dump station. Reservations are accepted year round. Park office hours are limited in the winter season. Please use the yellow phone located on the information board next to the park office for all registration.

Check-in time is 2:30 p.m.
Check-out time is 1 p.m.

Overnight accommodations

The nine cabins at Ike Kinswa State Park sit along Mayfield Lake and are within walking distance of the lake. Each cabin is 12-by-24-feet in size and features a 6-foot covered front porch, picnic table, electric heat, lights, and locking doors. Bathrooms and showers are nearby. Cabins are furnished with bunk beds that sleep three and a full-size bed. Outside is a fire grill, utility hookup, and a deck that is ADA accessible. Pets are allowed in cabins 4, 5 and 9 with a $15 (plus tax) pet fee per night. For more information, visit our cabins and yurts page.

Reservations & fees

Reservations can be made online or by calling (888) CAMPOUT or (888) 226-7688. For fee information, check out our camping rates page.

Historical information

Mayfield Lake is a reservoir established by the construction of Mayfield Dam. Prior to construction of the dam, the Tilton River joined forces with the Cowlitz River within this landscape. The dam, designed to forge the energy of this river confluence into electricity, was originally proposed in 1948. After 15 years of legal struggles, which ended in a U.S. Supreme Court decision, it was constructed and became operational in 1963. In this same year, Washington State Parks began to manage recreation along its shorelines.

The original name of the park was Mayfield Lake State Park. However, in 1971 the name was changed to Ike Kinswa State Park in honor of Ike Kinswa, a well-respected Cowlitz Indian who lived along the shores of the rivers' confluence. Over the years the park has grown in popularity as a camping and water recreation destination in central Lewis County.