CNRFC - Hydrology - Observed River/Reservoir Conditions

WILLIAMSON RIVER - CHILOQUIN (WMSO3)

Latitude: 42.57º N	Longitude: 121.88º W	Elevation: 4149 Feet
Location: Klamath County in Oregon		Bulletin Group: North Coast		River Group: Klamath

Action/Monitor: 8.0 Feet

Minor Flood: 9.0 Feet

Moderate Flood: 10.0 Feet

Major Flood: 11.0 Feet

Plot Type:

Observed Data Credit
	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
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Flood Impacts
10.0 Feet	Widespread 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 Feet	The 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 Feet	The 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: Mostly clear. Lows in the mid 30s to mid 40s. West winds 5 to 10 mph shifting to the northwest after midnight, then shifting to the east well after midnight.

Friday: Partly cloudy. Highs in the lower 70s to lower 80s. East winds around 5 mph shifting to the southwest late in the afternoon.

Friday Night: Partly cloudy. Lows in the lower to mid 40s. Southwest winds 5 to 10 mph shifting to the south well after midnight.

Saturday: Partly cloudy. Highs in the lower to mid 70s. South winds around 5 mph shifting to the southwest 10 to 15 mph in the afternoon.

Saturday Night: Partly cloudy. Lows in the lower to mid 40s. West winds 10 to 15 mph decreasing to around 5 mph after midnight.

Sunday: Partly cloudy. Slight chance of thunderstorms in the afternoon. Highs in the lower to mid 60s.

Sunday Night: Mostly cloudy. Slight chance of rain showers in the evening, then rain and snow showers likely after midnight. Colder. Lows in the lower 30s to lower 40s.

Monday: Rain and snow showers in the morning, then rain showers, snow showers and slight chance of thunderstorms in the afternoon. Highs in the lower to mid 50s.

Monday Night: Mostly cloudy with a chance of rain showers, snow showers and slight chance of thunderstorms in the evening, then partly cloudy with a slight chance of rain and snow showers after midnight. Lows in the lower to mid 30s.

Tuesday: Mostly cloudy with a slight chance of snow showers in the morning, then partly cloudy in the afternoon. Highs in the lower 50s to lower 60s.

Tuesday Night and Wednesday: Partly cloudy. Lows in the lower to mid 30s. Highs in the mid 50s to mid 60s.

Wednesday Night: Mostly clear. Lows in the lower to mid 30s.

Thursday: Partly cloudy. Highs in the lower to mid 60s.

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.

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