The North Fork Feather River is one of three branches of the Feather River system in northern California. This system consists of North, Middle, and South Branches, all of which originate in Plumas County and flow into the Lake Oroville reservoir; after exiting Lake Oroville the Feather River runs south through the northern Sacramento Valley and eventually ends in a confluence with the Sacramento River.

This North Fork has numerous primary sources: Rice Creek and Cold Boiling lake at the northern-most point on the southern edge of Lassen Volcanic National Park, Buzzard Springs in northeastern Plumas County, Warner Creek, joining further to the south. The North Fork then flows into Lake Almanor, where it is joined by waters from the Hamilton Branch and Benner Creek, and Last Chance River as well as numerous natural springs feeding from beneath the lake; the River exits Lake Almanor at Canyon Dam, runs south, and is joined by the East Branch North Fork Feather River (also called Last Chance River) south of Indian Valley, near the communities of Belden and Seneca.

The North Fork then continues down a canyon until it ends in the Oroville Reservoir.