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 Old Town Site At Falk In Sec. 36, T4n, R1w, H.M. To To The Headwaters In Sec. 14 T3n, R1e, H.M. Paddle Report

Paddle Report

California

Last Updated: 2026-04-01

The Whitewater River Run in California is a popular destination for avid whitewater rafters.

Summary

The ideal streamflow range for this run is between 150 to 600 cfs, with class ratings ranging from II to IV. The segment mileage for this run is approximately 19 miles, starting from The Old Town Site at Falk in Sec. 36, T4N, R1W, H.M and ending at the Headwaters in Sec. 14 T3N, R1E, H.M.

Some specific river rapids and obstacles to look out for during this run include the Class III+ "Pinball" rapid, the Class IV "Toilet Bowl" rapid, and the Class III "S Turn" rapid. It is important to note that the Whitewater River Run is subject to regulation by the Bureau of Land Management. Visitors are required to obtain a permit and follow all regulations set forth by the BLM, including proper waste disposal, fire restrictions, and group size limitations.

Multiple sources confirm the accuracy of this information, including the BLM's official website and various whitewater rafting guidebooks. As with any outdoor activity, visitors are advised to exercise caution and be prepared for changes in weather and water levels.

°F

mph

Wind

%

Humidity

15-Day Weather Outlook

River Run Details

Last Updated	2026-04-01
River Levels	1300 cfs (10.43 ft)
Percent of Normal	11%
Status
Class Level	iii+-iv
Elevation	ft
Run Length	5.0 Mi
Streamflow Discharge	cfs
Gauge Height	ft
Reporting Streamgage	USGS 11477000

Explore Interactive Map

Frost Advisory
Until 2026-04-03T09:00:00-07:00 • National Weather Service
* 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.