CALIFORNIA FLOW REPORT

Last Updated: January 2, 2026

In California, a varied panorama of streamflow conditions can be observed across the state. Notably, the Colorado River below Parker Dam indicates a streamflow of 2300 cubic feet per second (cfs), with a significant decrease of 30.09 cfs over the last 24 hours, which could impact water activities in the region. Similarly, the Upper Truckee River and the Truckee River near Truckee show substantial increases in streamflow at 109 cfs and 254 cfs, respectively, with recent surges that may pique the interest of whitewater enthusiasts. Conversely, the Yuma Main Canal at Siphon Drop P.P. near Yuma is experiencing a notable deficit in streamflow, running at 113 cfs, which is a stark 77.27% below normal, indicating potential concerns for water supply or recreational use in the area.

Among the rivers and streams presenting alarming deviations from normal flows, the Smith River near Crescent City exhibits a flow rate of 3190 cfs, a notable drop that may affect the surrounding ecosystems and communities. Furthermore, the Donner Creek at Highway 89 near Truckee reveals an extraordinary high percent normal flow of 178.71%, with a gage height of 4.16 feet, highlighting the potential for increased recreational activities or possible flooding concerns. The San Joaquin River, a critical waterway for the state's central valley, near Mendota reports a flow of only 149 cfs, significantly below the expected norm, hinting at water scarcity issues. These disparate conditions reflect the complex and dynamic nature of California's hydrology, underscoring the importance of ongoing monitoring for those dependent on these vital water resources, whether for leisure, like whitewater rafting along the Truckee River, or for municipal and agricultural needs.