Mayfield Lake

Mayfield Lake is a scenic 2,000-acre reservoir on the Cowlitz River in Lewis County, just outside Mossyrock and about halfway between Seattle and Portland off US 12. Formed when Mayfield Dam was finished in 1963, it winds through forest and farmland where the Tilton and Cowlitz rivers meet, and its water warms up nicely in summer, which makes it one of the best swimming and boating lakes in southwest Washington. We offer the best boats, jet skis and water toys at Mayfield Lake, ready and waiting for you right at the lake.

Mayfield Lake Boat Rentals

Mayfield's open main lake and winding river arms are great for water skiing, wakeboarding, wakesurfing and tubing, with Mount Rainier country all around. Our Mayfield Lake boat rentals include:

• MasterCraft wakesurf and wakeboard boats for family and friends
• Ski boat rentals for water skiing, slalom and tubing
• Tubes, wakeboards and wakesurf boards for every age
• Paddle boards and water trampolines for a day at the park or the resort

Rather have someone else drive? Book a private boat charter and our captain will handle the boat. Damage waiver coverage is available on every rental.

Mayfield Lake Jet Ski Rentals

Jet skis are a fun way to explore Mayfield Lake, from the main lake near the dam up the Tilton River arm past Ike Kinswa State Park and toward Mossyrock. Most of our jet ski rentals can pull a tube, depending on the model, and guided rides are available. See our jet ski models to pick your ride.

Pontoons, Marinas and Boat Service

Mayfield Lake has public boat launches at Ike Kinswa State Park and Mayfield Lake County Park off US 12, plus the full-service marina at Lake Mayfield Resort. If you're searching for a Mayfield Lake pontoon rental, boat slip or boat service, check with the resort marina. We don't rent pontoons or service boats, but we offer surf boats, jet skis and water toys to go with your pontoon day or lake house stay.

Camping, Cabins and Things to Do

Ike Kinswa State Park on the north shore has campsites, cabins, a swim area and hiking and biking trails, and Mayfield Lake County Park has camping, a day-use area and a boat launch. Lake Mayfield Resort has cabins, rooms and RV sites right on the water. Anglers come for rainbow trout, tiger muskie and perch, and Riffe Lake and Mount St. Helens are a short drive east.

Getting to Mayfield Lake

From I-5, take Exit 68 and head east on US 12 about 15 miles toward Mossyrock. Mayfield Lake County Park is right off US 12, and Ike Kinswa State Park is reached via State Route 122 on the north side of the lake. It's about 1 hour 45 minutes from Seattle and about 1 hour 30 minutes from Portland. See all of our Washington lakes.

Good to Know Before You Go

• Washington boating rules: most drivers born after January 1, 1955 need a Washington Boater Education Card to drive a boat with 15 horsepower or more, and jet ski drivers must be at least 14. No one under 16 may rent a jet ski, jet skis can't be ridden between sunset and sunrise, and our rental drivers must be 18 or older.
• Life jackets: everyone on a jet ski and anyone being towed must wear a life jacket, and so must children 12 and under on boats under 19 feet while the boat is moving.
• River current: the upper arms are river channels, so watch for current, logs and shallow spots, especially after rain.
• Book early: summer weekends and holidays fill up fast.

Lakes Near Mayfield Lake

Just upstream, we serve Riffe Lake, and to the north there's Alder Lake and Lake Tapps. To the south, try Lake Merwin, and around Seattle there's Lake Washington.

Mayfield Lake Map