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 - CHILOQUIN (WMSO3)
Latitude: 42.57º NLongitude: 121.88º WElevation: 4149 Feet
Location: Klamath County in OregonBulletin Group: North CoastRiver Group: Klamath
Action/Monitor: 8.0 FeetMinor Flood: 9.0 FeetModerate Flood: 10.0 FeetMajor Flood: 11.0 Feet

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.

Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2024
1,860
5.01
Apr 21, 2024
2023
3,630
6.32
Apr 16, 2023
2022
1,040
4.16
Jan 9, 2022
2021
670
3.68
Apr 28, 2021
2020
1,120
4.26
Jan 29, 2020
 Historical High Stage/Flow Events (Period of Record - April 1917 to Present) - Ranked by Flow
1997
17,100
10.27
Jan 5, 1997
1964
16,100
10.56
Feb 26, 1964
1982
10,200
8.45
Feb 24, 1982
1970
8,010
7.53
Feb 27, 1970
1943
7,660
7.29
Apr 1, 1943
Location Photographs
ESRI™ Locator Map
Flood Impacts
10.0 FeetWidespread flooding is occurring along the Williamson River from the Highway 97 bridge downstream to Upper Klamath Lake. Widespread farm land flooding is occurring. Numerous structures are flooded.
9.0 FeetThe Williamson River is at flood stage. Water exceeds the channel of the river and begins to impact structures along the river and in low-lying areas near the river.
8.0 FeetThe Williamson River is near bankfull stage. Water is nearing many structures along and enar the river. Water is close to structures at the Water Wheel Campground near Highway 97.
Official 7 Day National Weather Service Forecast   (ORZ029)
rest of Today: Sunny with isolated thunderstorms. Highs in the lower to mid 80s. West winds 10 to 15 mph. Chance of thunderstorms 10 percent.

Tonight: Mostly clear. Isolated thunderstorms in the evening. Lows in the mid 40s to mid 50s. Northwest winds 10 to 15 mph decreasing to around 5 mph well after midnight.

Thursday: Partly cloudy. Isolated showers in the afternoon. Highs in the mid 70s to mid 80s. North winds around 5 mph shifting to the west in the afternoon.

Thursday Night: Mostly cloudy with scattered showers and isolated thunderstorms in the evening, then partly cloudy with isolated showers after midnight. Lows in the mid 40s to lower 50s. Northwest winds 10 to 15 mph. Chance of precipitation 30 percent.

Independence Day: Partly cloudy. Isolated thunderstorms in the afternoon. Highs in the lower to mid 70s. West winds 10 to 15 mph. Chance of thunderstorms 10 percent.

Friday Night through Saturday Night: Mostly clear. Lows in the lower 40s to lower 50s. Highs in the lower 70s to lower 80s.

Sunday: Sunny. Highs in the lower to mid 80s.

Sunday Night: Mostly clear. Lows in the lower to mid 50s.

Monday: Sunny. Highs in the mid 80s to lower 90s.

Monday Night: Mostly clear. Lows in the lower to mid 50s.

Tuesday: Sunny. Highs in the mid 80s to mid 90s.
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.