Lake Roosevelt is the portion of the Columbia River behind Grand Coulee Dam. This huge reservoir is 130 mile long and extends from Grand Coulee to the Canadian border. Walleyes are abundant in Roosevelt, but can be difficult to find for the inexperienced angler. Fish migrate great distances within the system, and water level fluctuations can cause the bite to "turn off" quickly. The Spokane (River) Arm of Lake Roosevelt can be very productive in the spring months of April, May and June. By summer and fall, walleyes spread throughout the reservoir relating to points, flats, and channel edges. In addition to walleyes, Lake Roosevelt holds good numbers of stocked rainbow trout, stocked kokanee, burbot, small mouth bass, and native red band rainbow trout.