It starts from the Monashee Mountains north of Shuswap Lake, and flows towards south into the northern end of the Seymour Arm of the lake.

Just below the Ratchford Creek confluence, where the river rages through a narrow gorge, lies the Seymour River Falls, which is 40 feet (12 m) two-tiered waterfall.

These falls can be accessed by two trails leading through the forest on both sides of the river.

The lower portion (approximately 18 km) of the river, below the falls, is important salmon spawning habitat, primarily for Sockeye but also Coho and Chinook.

This article related to a river in British Columbia, Canada is a stub.