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
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
2019
4,000
6.57
Apr 14, 2019
 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)
Tonight: Clear. Lows 10 to 20. Northeast winds 10 to 20 mph.

Saturday: Sunny. Highs in the lower to mid 30s. Windy. Northeast winds 20 to 30 mph with gusts to around 45 mph. Wind chill readings around 8 below in the morning.

Saturday Night: Clear. Lows 10 to 20. Windy. Northeast winds 20 to 30 mph with gusts to around 45 mph decreasing to 10 to 20 mph well after midnight.

Sunday: Sunny. Highs in the mid 30s to lower 40s. Northeast winds 10 to 15 mph. Wind chill readings around 7 below in the morning.

Sunday Night: Mostly clear. Lows 10 to 20. Northeast winds 5 to 10 mph.

Monday through Tuesday: Clear. Highs in the lower 40s to lower 50s. Lows 10 to 20.

Tuesday Night: Clear. Lows 15 to 25.

Wednesday: Sunny. Highs in the mid 40s to lower 50s.

Wednesday Night: Mostly clear in the evening, then partly cloudy with a slight chance of snow after midnight. Lows in the lower 20s to lower 30s.

Thursday: Partly cloudy with a slight chance of snow in the morning, then mostly cloudy with a slight chance of rain and snow in the afternoon. Highs in the lower to mid 40s.

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

Friday: Mostly cloudy. Chance of snow in the morning, then chance of rain and snow in the afternoon. Highs in the mid 30s to lower 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.