The Bonneville Power Administration has temporarily shelved its request to raise and lower Lake Pend Oreille by up to 5 feet this winter, with agency officials saying they will study how fluctuating lake levels affect waterfowl habitat, shoreline erosion and boat docks. To help meet peak electrical demands, BPA had proposed running more water through Albeni Falls Dam, which is part of the federal Columbia River power system. About 16 hours after water flows through Albeni Falls Dam, it reaches the reservoir behind Grand Coulee Dam, said Michael Milstein, a BPA spokesman.