National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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WILLIAMSON RIVER - KLAMATH AGENCY (WKAO3)
Latitude: 42.74º NLongitude: 121.83º WElevation: 4483 Feet
Location: Klamath County in OregonBulletin Group: North CoastRiver Group: Klamath
Issuance Time: Dec 26 2025 at 7:47 AM PSTNext Issuance: Dec 26 2025 at 3:00 PM PST
Action/Monitor: N/A Minor Flood: N/A Moderate Flood: N/A Major Flood: N/A

Please Note:
1) Each individual timeseries plotted on the graphical river forecast can be toggled on and off by clicking the legend entry above. If the "Observed (Raw Data)" contains bad data and is toggled off, the plot will scale to the remaining timeseries.

2) At extremely low river flows, the "Observed (Raw Data)" may show readings below the lower end of the available rating table, while the "Observed (Simulated)" will only show values at the bottom of the rating table, creating a potential discrepancy between the two readings.
Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
View US Geological Survey (USGS) Data for this station location.

Verification - Historical Graphical RVF
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To view other verification locations, use our Historical Graphical River Forecast Interface.
Location Photographs
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Official 7 Day National Weather Service Forecast   (ORZ029)
Today: Chance of snow this morning, then rain and snow this afternoon. Snow level 3800 feet this afternoon. Snow accumulation of 1 to 2 inches. Highs in the mid 30s to lower 40s. South winds 10 to 15 mph shifting to the southwest late this afternoon. Chance of precipitation 80 percent.

Tonight: Mostly cloudy in the evening then becoming partly cloudy. A 20 percent chance of snow showers. Lows 15 to 25. West winds 10 to 15 mph.

Saturday: Mostly cloudy in the morning then becoming partly cloudy. A 30 percent chance of snow showers. Highs in the lower to mid 30s. West winds 10 to 15 mph.

Saturday Night: Mostly clear in the evening then becoming mostly cloudy. Lows 15 to 20. Northwest winds 5 to 10 mph shifting to the northeast well after midnight.

Sunday: Partly cloudy in the morning then becoming sunny. Highs in the mid 30s to lower 40s. East winds around 5 mph.

Sunday Night: Partly cloudy. Lows 15 to 20.

Monday through Tuesday: Mostly clear. Highs in the lower to mid 40s. Lows 15 to 25.

Tuesday Night: Mostly clear in the evening then becoming partly cloudy. Lows in the lower to mid 20s.

Wednesday: Mostly cloudy. Highs in the lower to mid 40s.

Wednesday Night: Mostly cloudy. Slight chance of snow after midnight. Lows in the mid 20s to lower 30s.

New Years Day: Mostly cloudy. Slight chance of snow in the morning, then chance of rain and snow in the afternoon. Highs in the lower to mid 40s.
Product Disclaimer

This river graphic is not intended to serve as a substitute for official flood watches, warnings, advisories, or statements issued by the NWS Medford Weather Forecast Office. Observations are preliminary and subject to change. River levels identified as "forecast" should be consistent with those contained in official NWS products. River levels identified as "guidance" have significant uncertainty due to future weather or reservoir regulation and are provided for planning purposes only.