The North Fork Feather River is a watercourse of the northern Sierra Nevada and southern Cascades in the U.S. state of California.

It rises at the confluence of Rice Creek and a smaller unnamed stream in the southern part of the Lassen Volcanic National Park.

The river flows east, receiving Warner Creek from the left, and passes the town of Chester.

After leaving the dam the river cuts south into a gorge, and turns southwest to receive Butt Creek from the right.

These katabatic winds are caused by high-pressure air over the Great Basin seeking a path through the Sierra Nevada to the low-pressure voids on the California coast.