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)
Tonight: Clear. Haze early This Evening. Patchy smoke through the night. Haze well after midnight. Lows in the lower 50s to lower 60s. Northwest winds 5 to 10 mph.

Thursday: Sunny. Haze and patchy smoke through the day. Slight chance of thunderstorms in the afternoon. Highs in the mid 80s to lower 90s. South winds 5 to 10 mph shifting to the southwest 10 to 15 mph in the afternoon.

Thursday Night: Mostly clear. A 10 percent chance of thunderstorms in the evening. Patchy smoke in the evening. Haze through the night. Lows in the lower 50s to lower 60s. West winds 10 to 15 mph decreasing to around 5 mph after midnight.

Friday: Sunny. Highs in the mid 80s to lower 90s. Light winds becoming west around 10 mph.

Friday Night: Clear. Lows in the mid 40s to mid 50s. Northwest winds 10 to 15 mph decreasing to around 5 mph well after midnight.

Saturday and Saturday Night: Clear. Highs in the lower to mid 80s. Lows in the mid 40s to mid 50s.

Sunday and Sunday Night: Mostly clear. Highs in the lower to mid 80s. Lows in the mid 40s to mid 50s.

Monday through Wednesday: Mostly clear. Highs in the mid 70s to mid 80s. Lows in the mid 40s to mid 50s.
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.