Williamson River below Chiloquin

Highest listed crest 10.27 ftFlood stage 9.0 ft2 crests since 1996

The Williamson River below Chiloquin crested above flood stage 1 time among the 2 crests the National Weather Service lists from 1996 to 1997. The highest, 10.27 ft on January 5, 1997, was moderate flooding, 1.27 feet above flood stage.

The gauge

Highest listed crest: 10.27 ft; January 5, 1997; 17,100 cubic feet per second
Flood stage: 9.0 ft; Major flooding from 11.0 ft
Crests at major: 0; 1 above flood stage
Most recent flood crest: January 5, 1997; 10.27 ft, moderate flooding
Location: Klamath County; Oregon
Identifiers: NWS WMSO3; USGS 11502500

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Williamson River below Chiloquin

Action stage	8.0	1	Feb 12, 1996	The level at which the NWS or its partners begin to take action
Flood stage (minor)	9.0	0	—	Minimal or no property damage, but possibly some public threat
Moderate flood stage	10.0	1	Jan 5, 1997	Some inundation of structures and roads near the stream
Major flood stage	11.0	0	—	Extensive inundation of structures and roads

Every listed crest

2 crests from 1996 to 1997. Filled: at or above flood stage. Hover a crest for its date and stage.

These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.
1 crest measured on an earlier gauge datum is left out: 10.56 ft on Dec 26, 1964.

Highest crests

Highest listed crests, Williamson River below Chiloquin

1	Jan 5, 1997	10.27	+1.27	Moderate	17,100
2	Feb 12, 1996	8.61	−0.39	Action	6,800

Other gauges in Klamath County

Flood gauges in Klamath County

Beatty	8.5	12.19 ft, Dec 23, 1964	1

Klamath County: every hazard · River floods across the country · Oregon

NOAA National Water Prediction Service, gauge WMSO3, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.