Sauk River

Total streamflow across the Sauk River was last observed at 4,646 cfs, and is expected to yield approximately 9,215 acre-ft of water today; about 75% of normal. Average streamflow for this time of year is 6,219 cfs, with recent peaks last observed on 2025-12-11 when daily discharge volume was observed at 101,000 cfs.

Maximum discharge along the river is currently at the Sauk River At Darrington reporting a streamflow rate of 5,220 cfs. This is also the highest stage along the Sauk River, with a gauge stage of 8.24 ft at this location. This river is monitored from 4 different streamgauging stations along the Sauk River, the highest being situated at an altitude of 1,024 ft, the Sauk River Near St. Cloud.

The river is approximately 45 miles long and has a rich history dating back to the indigenous Snohomish and Sauk-Suiattle tribes. Hydrologically, the river is known for its high water flow and frequent flooding. The river has several dams and reservoirs, including the Culmback Dam and Reservoir, which is used for flood control and hydroelectric power generation. The river is popular for recreational activities such as fishing, kayaking, and hiking. The Sauk River also plays a significant role in agriculture, providing irrigation water for local farms and orchards.