Special Weather Statement
None

Significant rainfall over the past week has increased soil moisture to high levels across western Washington. This significant rain will continue to put extra pressure on soil instability, leading to an increased threat of landslides and debris flows, especially from recent burned areas, with additional rainfall acting as a trigger. Numerous landslides have already occurred in Whatcom, Skagit, King Counties and others. More landslides continue to be possible. Areas most susceptible to landslides debris flows under these conditions are steep coastal bluffs, other steep hillsides or road cuts, and recent burned areas. A diminishing threat of landslides and debris flows will continue for several days after the rain ends. For more information about current conditions, visit www.weather.gov/seattle, select Hydrology, and then scroll down for the links to the landslide information pages. For more information on landslides, visit the website for the Washington State Department of Natural Resources landslide geologic hazards at: http://bit.ly/2mtA3wn

Headwaters To Mouth At Diablo Lake Paddle Report

Paddle Report

Washington

Last Updated: 2025-12-18

The Whitewater River Run from Headwaters to Mouth at Diablo Lake in Washington state is an exciting and challenging adventure for experienced whitewater enthusiasts.

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Summary

The ideal streamflow range for this run is between 400 and 2000 cubic feet per second, with higher flows being more difficult to navigate. This section of the river is rated as class III to IV, with some class V rapids.

The segment mileage for this run is approximately 8 miles, starting at the Headwaters and ending at Diablo Lake. Some of the most notable rapids and obstacles include S-Bend, Corkscrew, and the infamous Diablo Drop.

There are specific regulations that must be followed when navigating this section of the Whitewater River. All boaters must possess a valid Washington State Parks Boater Permit, and it is recommended that they have previous whitewater experience. All boaters must also wear a personal flotation device and a helmet.

Multiple sources confirm the accuracy of this information, including the Washington State Parks and Recreation Commission and local outfitters who offer guided trips down the Whitewater River. Overall, the Whitewater River Run from Headwaters to Mouth at Diablo Lake is an exciting and challenging adventure for experienced whitewater enthusiasts.

River Run Details

Last Updated	2025-12-18
River Levels	2070 cfs (14.64 ft)
Percent of Normal	291%
Status
Class Level	iii-v
Elevation	ft
Run Length	16.0 Mi
Streamflow Discharge	cfs
Gauge Height	ft
Reporting Streamgage	USGS 12182500

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Special Weather Statement
Until 2025-12-20T17:00:00-08:00 • National Weather Service
Significant rainfall over the past week has increased soil moisture to high levels across western Washington. This significant rain will continue to put extra pressure on soil instability, leading to an increased threat of landslides and debris flows, especially from recent burned areas, with additional rainfall acting as a trigger. Numerous landslides have already occurred in Whatcom, Skagit, King Counties and others. More landslides continue to be possible. Areas most susceptible to landslides debris flows under these conditions are steep coastal bluffs, other steep hillsides or road cuts, and recent burned areas. A diminishing threat of landslides and debris flows will continue for several days after the rain ends. For more information about current conditions, visit www.weather.gov/seattle, select Hydrology, and then scroll down for the links to the landslide information pages. For more information on landslides, visit the website for the Washington State Department of Natural Resources landslide geologic hazards at: http://bit.ly/2mtA3wn

HEADWATERS TO MOUTH AT DIABLO LAKE

Paddle Report • Streamflow Levels • Weather Forecast

December 19, 2025

Last Updated	2025-12-18
River Levels	2070 cfs (14.64 ft)
Percent of Normal	291%
Status
Class Level	iii-v
Elevation	ft
Run Length	16.0 Mi
Streamflow Discharge	cfs
Gauge Height	ft
Reporting Streamgage	USGS 12182500

Realtime River Levels

USGS 12182500

Headwaters To Mouth At Diablo Lake Preview

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Weather Forecast

Nearby Streamflow Levels

Salix Creek At S Cascade Gl Near Marblemount 0.00cfs	0cfs
Thunder Creek Near Newhalem 1760.0cfs	1760cfs
Newhalem Creek Near Newhalem 29.5cfs	30cfs
Skagit River At Newhalem 16800.0cfs	16800cfs
Stehekin River At Stehekin 3560.0cfs	3560cfs
Cascade River At Marblemount 2390.0cfs	2390cfs