Lucky Peak Modification, Boise River, Idaho: Final Environmental Impact Statement

12-foot pool raise 75 megawatt acre-feet agencies alternative Anderson Ranch Dam aquatic Arrowrock Dam BARCLAY BAY basalt Board of Control Boise Project Boise River Basin Bonneville Power Administration Canyon construction Corps of Engineers Creek demand depth dissolved oxygen downstream drainage electricity elevation energy environmental impact statement esthetics facilities Federal flood control flows foot lake raise fuel granite habitat hydropower hypolimnion Idaho Department Idaho Fish irrigation lake level land located Lucky Peak area Lucky Peak Dam Lucky Peak Lake Lucky Peak Modification Lucky Peak project Lucky Peak Reservoir megawatt micromhos miles minimum pool Modification Study nuclear occur outlet percent plant pool level population powerhouse development Powerhouse Installation powerplants proposed action recreation reservoir area result runoff season shoreline slopes Snake River Snowmelt soil species storage streams summer surge tank temperature thermal thermocline tributaries trout upper watershed upstream valley vegetation Walla Walla water quality winter