Seven Bays Marina
Operated by Lake Roosevelt Adventures (NPS concessioner)
- Houseboat rentals
- Marina store
- Fuel
- Launch

WA · Verified 2026-07-16
A 150-mile Columbia River reservoir in eastern Washington managed as a National Park Service recreation area.
Lake Roosevelt is the 150-mile Columbia River reservoir behind Grand Coulee Dam in northeastern Washington. It is managed as Lake Roosevelt National Recreation Area by the National Park Service, in cooperation with the Bureau of Reclamation, the Confederated Tribes of the Colville Reservation, and the Spokane Tribe. The lake threads through basalt canyons, ponderosa-pine ridges, and open sagebrush country of the Columbia Plateau, with more than 600 miles of shoreline and long, quiet cruising reaches that feel more like a river than a reservoir. Two full-service concessioner marinas — Seven Bays and Keller Ferry — rent houseboats, and additional access points at Kettle Falls, Fort Spokane, and other points along the lake serve small-boat and day traffic. Because Lake Roosevelt sits inside a National Recreation Area and along tribal lands, on-water rules, camping rules, and access can vary by location; the concessioner and NPS orientation covers those specifics before your trip. The lake is far enough from major cities that it stays quiet outside the peak summer weekends, and its northern latitude makes for long summer daylight hours ideal for slow, cove-hopping days.
Facts sourced from the managing agency and public reference material and last verified 2026-07-16. Water levels, marina operations, and access can change — confirm current conditions before departure.
Houseboat options for Lake Roosevelt are currently being verified with the marinas listed below. Submit your trip details to request current rental information for your dates, group size, and preferred features.
Verified 2026-07-16
Operated by Lake Roosevelt Adventures (NPS concessioner)
Operated by Lake Roosevelt Adventures (NPS concessioner)
Rental season: Typically May through September, with the strongest window from late June through Labor Day.
Peak season: July through early September.
Warm dry summers with typical highs in the 80s to low 90s°F, cool clear nights, and generally low humidity. Spring is cool and can be windy; early autumn brings shorter but often excellent days.
Lake Roosevelt is drawn down significantly in spring for Columbia Basin water management, then refilled through early summer. Confirm current pool elevation and launch-ramp status with the National Park Service and the marina — a few ramps operate only at certain elevations.
Conditions can change quickly. Always follow marina, National Weather Service, and local authority guidance while on the water.
Most guests fly into Spokane and drive 90 minutes to two hours to their marina. Seven Bays is on the south shore off SR-25; Keller Ferry sits on the reservation-side shore off SR-21. Cell service is limited around the lake, so download maps before you leave Spokane.
Long summer daylight and warm surface water make cove swimming and beach anchoring one of Lake Roosevelt's main draws once June is past.
Kokanee salmon, walleye, smallmouth bass, rainbow trout, and burbot are all present. Walleye and kokanee in particular have devoted followings on this lake.
The lake extends 150 miles from Grand Coulee Dam to the U.S.–Canada border — some of the least-crowded cruising water in the Pacific Northwest.
Bighorn sheep, mule deer, and a variety of raptors are commonly seen along the basalt cliffs and pine ridges.
Grand Coulee Dam and the summer laser light show pair naturally with a lake trip as a pre- or post-vacation day off the water.
Long calm morning water and quiet side arms reward small-boat exploration launched from an anchored houseboat.
Common species include: Kokanee salmon, Rainbow trout, Walleye, Smallmouth bass, Burbot, Yellow perch, Sturgeon (catch-and-release).
Confirm current Washington state fishing licenses, tribal fishing rules where they apply, and creel limits with the Washington Department of Fish and Wildlife before your trip.
Spokane offers full-scale provisioning. Davenport, Coulee Dam, and Kettle Falls have smaller-town grocery options closer to the marinas. Marina stores stock ice, bait, and essentials.
Marinas provide a mandatory orientation. Afternoon winds can build quickly on the wider river reaches; watch marine forecasts and be ready to reset an anchor if winds shift. Cell service is spotty, so plan communications accordingly. Follow National Park Service guidance for camping and anchoring inside the recreation area, especially along tribal shorelines.
Spokane offers a wide range of hotels for pre- and post-trip stays. Coulee Dam and Kettle Falls have smaller-town lodging closer to the marinas.
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