Bill Williams River at Alamo Lake
Arizona — Water Level & Flood Stage
Located in La Paz County, Arizona on the Bill Williams River. Live water level data from USGS gauge 09426000, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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Flood Stages
Major Flood
1265 ft
Minor Flood
1235 ft
Action Stage
1235 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
1265 ft
Water reaches the embankment crest elevation at the top of the dam. The dam crest length is 283 feet.
1235 ft
Water reaches the spillway crest elevation. Crest length is 284 feet.
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 |
|---|---|---|
| Feb 6, 1937 | 46 ft | 105,000 cfs |
| Feb 6, 1937 | 46 ft | 105,000 cfs |
| Sep 5, 1939 | 39.6 ft | 86,000 cfs |
| Sep 5, 1939 | 39.6 ft | 86,000 cfs |
| Aug 28, 1951 | 30.8 ft | 65,100 cfs |
About This Gauge
USGS Site
NWS LID
ALMA3
River
Bill Williams River
County
La Paz, AZ
Coordinates
34.2309°N, 113.6088°W
Get Flood Alerts for Bill Williams River
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 Bill Williams River at Alamo Lake?
The Bill Williams River at Alamo Lake gauge is maintained by USGS (site 09426000) 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 Bill Williams River at Alamo Lake?
The NWS-defined flood stage for Bill Williams River at Alamo Lake is 1235 feet. Action stage begins at 1235 feet. Moderate flooding starts at N/A feet, and major flooding at 1265 feet.
How do I get alerts when Bill Williams River rises?
Download StormCast free on Google Play, go to River Gauges, and add Bill Williams River at Alamo Lake to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the Bill Williams River at Alamo Lake gauge located?
The gauge is located in La Paz County, Arizona at coordinates 34.2309°N, 113.6088°W. USGS site number: 09426000. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: Observations courtesy of U.S. Geological Survey, Observations courtesy of U.S. Army Corps of Engineers