The Pit River Watershed encompasses approximately 4,324 square miles. The Upper Pit headwaters are at Goose Lake in the north, the Warner Mountains in the south, and the river runs southwest into Lake Britton.
The Lower Pit runs through a series of PG&E-operated hydropower projects into Shasta Reservoir.
The Pit River is host to one of the best wild trout fisheries in the state, though hydropower projects, sedimentation, habitat degradation and various water quality issues threaten the Pit River.
The Upper Pit River will be included in a to-be-developed Upper Pit Integrated Regional Water Management Plan. The Lower Pit River Basin is part of the to-be-developed Upper Sac Integrated Regional Water Management Plan.