Hydrologic Outlook
None

ESFSEW A series of atmospheric rivers will provide rounds of increasingly impactful rainfall starting on Friday and continuing through early next week. Snow levels will remain around 5000 to 6000 feet. Expect rising rivers with potential for flooding especially for rivers flowing off the Olympics and Cascades. Urban flooding and landslides are also possible throughout this period as the soil conditions remain wet.

Headwaters To Mouth At Diablo Lake Paddle Report

Paddle Report

Washington

Last Updated: 2025-12-03

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	2025-12-03
River Levels	2070 cfs (14.64 ft)
Percent of Normal	49%
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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Hydrologic Outlook
Until 2025-12-05T04:00:00-08:00 • National Weather Service
ESFSEW A series of atmospheric rivers will provide rounds of increasingly impactful rainfall starting on Friday and continuing through early next week. Snow levels will remain around 5000 to 6000 feet. Expect rising rivers with potential for flooding especially for rivers flowing off the Olympics and Cascades. Urban flooding and landslides are also possible throughout this period as the soil conditions remain wet.

HEADWATERS TO MOUTH AT DIABLO LAKE

Paddle Report • Streamflow Levels • Weather Forecast

December 5, 2025

Last Updated	2025-12-03
River Levels	2070 cfs (14.64 ft)
Percent of Normal	49%
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 301.0cfs	301cfs
Newhalem Creek Near Newhalem 29.5cfs	30cfs
Skagit River At Newhalem 4030.0cfs	4030cfs
Stehekin River At Stehekin 640.0cfs	640cfs
Cascade River At Marblemount 494.0cfs	494cfs