Frost Advisory
2026-04-03T09:00:00-07:00

* WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Interior Del Norte, Coastal and Interior Humboldt, Coastal and Interior Mendocino, Northern and Western Lake County * WHEN...From 1 AM to 9 AM PDT Friday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Fog may form in some valleys, which could raise temperatures and reduce the risk of frost. Confidence is low on which valleys will see fog. Valleys that remain clear could see temperatures near or below freezing.


From The Confluence With The South Fork Elk River To To The Headwaters In Sec. 21, T3n, R1e, H.M. Paddle Report

Last Updated: 2025-06-28

The Whitewater River run in California stretches from the confluence with the South Fork Elk River to the headwaters in Sec.


Summary

21, T3N, R1E, H.M. The ideal streamflow range for this run is between 200 and 500 cubic feet per second (cfs). This is considered a Class III-IV run, with some sections reaching Class V during high water. The total distance of the run is approximately 11.5 miles.

The river has several notable rapids, including "The Chute," "Pinball," and "Meatgrinder." The Chute is a narrow, technical rapid with a steep drop that requires precise maneuvering. Pinball is a boulder garden with multiple channels that require quick decision-making and solid boat control. Meatgrinder is a long, continuous rapid with several large waves and holes.

There are no specific regulations for this area, but it is recommended that all boaters wear appropriate safety gear, including helmets and personal flotation devices. It is also important to respect private property and avoid disturbing wildlife.



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15-Day Weather Outlook


River Run Details

Last Updated 2025-06-28
River Levels 1300 cfs (10.43 ft)
Percent of Normal 80%
Status
Class Level iii-iv
Elevation ft
Run Length 4.0 Mi
Streamflow Discharge cfs
Gauge Height ft
Reporting Streamgage USGS 11477000
       

5-Day Hourly Forecast Detail