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Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit https://www.weather.gov/owp/operations for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.

Weather Forecast Office Riverton, WY

Northwest River Forecast Center

Hydrograph

River at a Glance

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Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental) Not Available

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

NOTE: Gauge reading affected by reservoir operations. NOTE: Forecasts are not available for the Snake River below Jackson Dam. Only observed stages are available for this point.

Default Hydrograph Scale to Flood Categories   Return to Area Map

Upstream Gauge

Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 0 Moderate Flood Stage: 0 Flood Stage: 0 Action Stage: 15 Low Stage (in feet): -9999 Historic Crests (1) 15,100 cfs on 06/12/1918 (2) 14,200 cfs on 06/25/1927 (3) 13,300 cfs on 06/19/1943 (4) 12,100 cfs on 06/06/1910 (5) 12,100 cfs on 06/11/1997 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 5,280 cfs on 07/19/2021 (2) 5,600 cfs on 06/07/2020 (3) 4,680 cfs on 05/18/2019 (4) 7,320 cfs on 05/25/2018 (5) 6,630 cfs on 06/07/2017 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records Currently none available.

Zoom Level:10 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

If you notice any errors in the below information, please contact our Webmaster
20	Flood stage. Minor low land flooding.
15	Bankfull stage.
11.63	Record stage---(6/19/1943).
10.41	Record flow---15,100 cfs (6/12/1918).
Photos (1) Looking Upstream at Jackson Lake Dam---Moderate Flow (2) Looking Upstream at Jackson Lake Dam---Low Flow (3) Looking Upstream at Jackson Lake Dam---Low Flow (4) Looking Downstream---Low Flow

About This Location

Latitude: 43.858320° N, Longitude: 110.585800° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft Not Available 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 6727.84 ft Not Available 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 Jackson Dam

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Precipitation Graphics Water Supply Graphics Flood Potential Graphics Drought Graphics Inundation Mapping Locations

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