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Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental)

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Printable Image About this graph Tabular Data (UTC) Tabular Data (PDT) Datum: NGVD29 Metadata

NOTE: Forecasts for the Williamson River below Chiloquin are issued routinely year-round.

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Flood Categories (in feet) Major Flood Stage: 11 Moderate Flood Stage: 10 Flood Stage: 9 Action Stage: 8 Low Stage (in feet): 0 Historic Crests (1) 10.56 ft on 12/26/1964 (2) 10.27 ft on 01/05/1997 (3) 8.61 ft on 02/12/1996 (P): Preliminary values subject to further review. Recent Crests (1) 10.27 ft on 01/05/1997 (2) 8.61 ft on 02/12/1996 (3) 10.56 ft on 12/26/1964 (P): Preliminary values subject to further review. Low Water Records Currently none available.

Zoom Level:16 Legend FEMA Layer Gauge Location Disclaimer Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.

Flood Impacts & Photos

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10	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	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	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.

About This Location

Latitude: 42.564375° N, Longitude: 121.879714° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 9 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps Vertical Datum Elevation (gauge height = 0) Elevation (gauge height = flood stage) Elevation information source NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 4148.5 ft 4157.5 ft Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other Not Available Not Available   Current/Historical Observations: U.S. Geological Survey (USGS) Data and Site Info for Chiloquin

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Northwest River Forecast Center California Nevada River Forecast Center Snow values Interactive Map Mean daily surface air temperature Cumulative thawing degree days Reservoir summary for Oregon (nrcs) Reservoir summary for California (nrcs) Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Snow Information FloodSmart.gov FEMA National Flood Insurance Program

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