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 OregonRiver Group: North Coast
Monitor Stage: 8.0 FeetFlood Stage: 9.0 Feet

Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
View USGS Data for this station location.

Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2021
670
3.68
Apr 28, 2021
2020
1,120
4.26
Jan 29, 2020
2019
4,000
6.57
Apr 14, 2019
2018
1,650
4.81
Mar 26, 2018
2017
5,520
7.56
Mar 24, 2017
 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
Official 7 Day National Weather Service Forecast   (ORZ029)
Tonight: Clear. Lows in the mid 30s to mid 40s. East winds around 5 mph shifting to the northeast late this evening and overnight.

Sunday: Sunny. Highs in the mid 70s to lower 80s. East winds around 5 mph shifting to the southwest late in the afternoon.

Sunday Night: Clear. Lows in the mid 30s to mid 40s. Northwest winds around 5 mph shifting to the northeast after midnight.

Monday: Sunny. Highs in the mid 70s to lower 80s. Northeast winds around 5 mph shifting to the southeast in the afternoon.

Monday Night: Mostly clear. Lows in the lower to mid 40s. Northwest winds around 5 mph shifting to the north after midnight.

Tuesday through Wednesday Night: Mostly clear. Highs in the mid 70s to lower 80s. Lows in the lower to mid 40s.

Thursday: Partly cloudy in the morning then becoming sunny. Highs in the mid 70s to lower 80s.

Thursday Night through Saturday: Mostly clear. Lows in the lower 40s to lower 50s. Highs in the mid 70s to lower 80s.
Impacts - E19 Information
8.0 FeetWater is nearing many structures along and near the river. Water is close to structures at the Water Wheel Campground near US Highway 97.
9.0 FeetWater exceeds the channel of the river and begins to impact structures along the river and in low-lying areas near the river.
10.0 FeetWidespread flooding is occurring along the Williamson River from the US Highway 97 bridge downstream to Upper Klamath Lake. Widespread farm land is flooded and numerous structures as well.
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.