Major water bodies in the district include the mainstem Clark Fork River, reservoirs formed by three mainstem dams, and tributaries to the Clark Fork. From upstream to downstream, major tributaries include: Thompson River, Prospect Creek, Graves Creek, Beaver Creek (Little Beaver, Big Beaver and White Pine Creek), Vermilion River, Trout Creek, Swamp Creek, Marten Creek, Rock Creek, Pilgrim Creek, Bull River, Elk Creek, and Blue Creek. Green Mountain Conservation District works with landowners across the watershed on conservation projects and stream permitting.
