Lake Roosevelt Adventures at Seven Bays Marina serves as the northern basecamp on Lake Roosevelt, offering houseboat rentals, small boat rentals, seasonal moorage, fuel, a marina store, and lakeside dining. Located in Davenport, Washington, Seven Bays gives boaters access to the northern stretch of Lake Roosevelt, while a sister marina at Keller Ferry covers the southern end, with fuel, moorage, and supplies available at both.
The signature offering here is houseboat rentals, running from 3-night to 7-night trips aboard vessels like the Constitution Class houseboat, a 62-foot, triple-decker floating home that sleeps up to 14 guests across 4 private staterooms and a bonus room, complete with 2.5 bathrooms, central A/C, an electric fireplace, a hot tub, and a slide off the top deck. Smaller Explorer Class houseboats are also available for groups wanting a more compact option. Guests can navigate glassy waters, secret coves, and canyon walls by day, then sleep under the stars or out on deck at night.
For a shorter outing, Seven Bays also rents Princecraft pontoon boats and Starcraft fishing and skiing boats by the half day, full day, or overnight, either as a standalone rental or paired with a houseboat stay to add more activities to the trip. Pontoon and ski boat rentals run $200 for 4 hours or $400 for 8 hours. The on-site Seven Bays Marina Store carries apparel, groceries, fishing equipment, gifts, and camping supplies, and The Grill at Seven Bays serves lunch and dinner with weekly specials and lake views, open Thursday through Sunday.
Beyond boating, guests can enjoy paddleboarding, cliff jumping, fishing, swimming, and kayaking around the marina, along with nearby Fort Spokane for a bit of local history. Administration and moorage are open daily 9am-6pm.
For anyone looking to rent a houseboat, pontoon, or fishing/ski boat on the northern end of Lake Roosevelt, Lake Roosevelt Adventures at Seven Bays Marina offers a full-service basecamp with dining, moorage, and fuel all in one place.
