Major Flood
14 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
13 ft
Minor Flood
12 ft
Action Stage
10 ft
What Floods at Each Level
14 ft
Major Flood Stage. Flood Plain Full. Left Bank likely seeing significant errosion.
13 ft
Moderate Flood Stage. Water Tops embankment by 1 ft. Gage equipment likely damaged or destroyed and embankment likely compromised.
12 ft
Minor Flood Stage. Top of embankment.
10 ft
Bankfull stage. Action Stage. Water reaches the top of staff gage on left bank flume structure.
8.46 ft
Record stage and flow---1,890 cfs (6/3/1986).
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Jun 2, 1986 | 8.46 ft | 1,890 cfs |
| Jun 16, 1995 | 8.45 ft | 1,720 cfs |
| Jun 8, 1972 | 8.1 ft | 1,480 cfs |
About This Gauge
USGS Site
NWS LID
BSRW4
River
Big Sandy River (WY)
County
Sublette, WY
Coordinates
42.3296°N, 109.5119°W
Get Flood Alerts for Big Sandy River (WY)
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Big Sandy River (WY) above Big Sandy Reservoir?
The Big Sandy River (WY) above Big Sandy Reservoir gauge is maintained by USGS (site 09213500) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Big Sandy River (WY) above Big Sandy Reservoir?
The NWS-defined flood stage for Big Sandy River (WY) above Big Sandy Reservoir is 12 feet. Action stage begins at 10 feet. Moderate flooding starts at 13 feet, and major flooding at 14 feet.
How do I get alerts when Big Sandy River (WY) rises?
Download StormCast free on Google Play, go to River Gauges, and add Big Sandy River (WY) above Big Sandy Reservoir to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Big Sandy River (WY) above Big Sandy Reservoir gauge located?
The gauge is located in Sublette County, Wyoming at coordinates 42.3296°N, 109.5119°W. USGS site number: 09213500. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- Stage data may not be available during winter months.