COSUMNES RIVER

Last Updated: December 4, 2025

Get the latest River Levels, Streamflow, and Hydrology for in River flows across 1 streamgages of the Cosumnes River


Summary

Maximum discharge along the river is currently at the reporting a streamflow rate of cfs. This is also the highest stage along the Cosumnes River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Cosumnes River, the highest being situated at an altitude of ft, the .

       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Cosumnes R A Michigan Bar Ca
USGS 11335000
62 cfs 3.03 ft -6.5
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The river was an important source of water for Native American tribes for thousands of years before European settlers arrived. Today it is primarily used for agricultural purposes, providing irrigation water to farms in the surrounding areas. The river's flow is controlled by two major dams, the Slab Creek Dam and the Chili Bar Dam, which create two large reservoirs that are used for hydroelectric power generation and recreation. The Cosumnes River Preserve is a popular destination for birdwatchers and nature enthusiasts, offering over 11,000 acres of protected wetlands and riparian habitat. The river is also home to a diversity of fish species, including steelhead trout and Chinook salmon.