The lake fills the basin of the upper
Peace River, backing into the
Rocky Mountain Trench which is where the Parsnip and Finlay met at
Finlay Forks to form the Peace. The lake includes three
reaches, the Peace Reach (formerly the Peace Canyon), and the Parsnip and Finlay Reaches, which are the lowermost basins of those rivers, and covers a total area of , • Carbon Creek • Ducette Creek • Clearwater Creek • Point Creek • Selwyn Creek • Weston Creek • Scott Creek • Patsuk Creek • Cutthumb Creek • Tony Creek • Tutu Creek • Mugaha Creek • Chichouyenily Creek • Gagnon Creek • Mischinsinlika Creek • Lignite Creek • Scovil Creek • Tsedeka Creek • Dastaiga Creek • Blackwater Creek • Eklund Creek • Fries Creek • Strandberg Creek • Chunamon Creek • Tear Creek • Pete Toy Creek • Lorimer Creek • Ole Creek • Mica Creek • Factor Ross Creek • Frank Creek • Isola Creek • Ruby Red Creek • Ivor Creek • Police Creek • Chowika Creek • Shovel Creek • Brain Creek • Collins Creek • Lafferty Creek • Bevel Creek • Lost Cabin Creek • Bernard Creek • Weasel Creek • Schooler Creek • Dunlevy Creek • Cust Creek ==History==