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

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SPRAGUE RIVER - CHILOQUIN (CHSO3)
Latitude: 42.58º NLongitude: 121.85º WElevation: 4202 Feet
Location: Klamath County in OregonBulletin Group: North CoastRiver Group: Klamath
Issuance Time: Dec 26 2025 at 1:21 PM PSTNext Issuance: Dec 27 2025 at 9:00 AM 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
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (ORZ029)
Tonight: Mostly cloudy this evening then becoming partly cloudy. Patchy fog through the night. Chance of rain showers early this evening. Chance of snow showers this evening. Slight chance of snow showers well after midnight. Snow level 2700 feet this evening. Lows in the lower to mid 20s. West winds 5 to 10 mph. Chance of precipitation 30 percent.

Saturday: Partly cloudy in the morning then clearing. Patchy fog in the morning. Highs in the lower to mid 30s. West winds 5 to 10 mph.

Saturday Night: Partly cloudy in the evening then becoming mostly cloudy. Patchy fog through the night. Widespread freezing fog after midnight. Lows 15 to 20. North winds 5 to 10 mph.

Sunday: Sunny. Widespread freezing fog in the morning. Highs in the mid 30s to lower 40s. Northeast winds around 5 mph.

Sunday Night: Partly cloudy. Lows 15 to 20. Northeast winds around 5 mph.

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

Wednesday Night: Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower to mid 20s.

New Years Day: Mostly cloudy with a chance of rain and snow showers. Highs in the lower to mid 40s.

Thursday Night: Mostly cloudy. Chance of rain and snow showers in the evening, then chance of snow showers after midnight. Lows in the mid 20s to lower 30s.

Friday: Mostly cloudy with a chance of snow showers. 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.