Gila River at Duncan
Arizona — Water Level & Flood Stage
Located in Greenlee County, Arizona on the Gila River. Live water level data from USGS gauge 09439000, 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
22 ft
25,800 cfs
Moderate Flood
21 ft
22,000 cfs
Minor Flood
20 ft
18,000 cfs
Action Stage
16 ft
7,500 cfs
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
22 ft
Major Flood Stage: Large sections of Duncan flood including business district, residences, and Highway 75.
21 ft
Moderate Flood Stage: Water running over top of left bank of Highway 75 bridge approach in Duncan. Fields adjacent to the river and structures close to the river flood.
20 ft
Minor Flood Stage: Highway 75 bridge approach bottom reached on left bank. Dike structure failure is a possibility.
18 ft
Bankfull Stage: Water near the top of the dike structure and may start causing erosion downstream of bridge.
16 ft
Action Stage: Water could begin to damage the dike structure that protects Duncan.
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 14, 2005 | 21.36 ft | — |
| Feb 14, 2005 | 21.36 ft | — |
| Sep 15, 2013 | 17.67 ft | 10,700 cfs |
| Sep 15, 2013 | 17.67 ft | 10,700 cfs |
| Jul 26, 2008 | 14.67 ft | 6,930 cfs |
About This Gauge
Get Flood Alerts for Gila 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 Gila River at Duncan?
The Gila River at Duncan gauge is maintained by USGS (site 09439000) 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 Gila River at Duncan?
The NWS-defined flood stage for Gila River at Duncan is 20 feet. Action stage begins at 16 feet. Moderate flooding starts at 21 feet, and major flooding at 22 feet.
How do I get alerts when Gila River rises?
Download StormCast free on Google Play, go to River Gauges, and add Gila River at Duncan 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 Gila River at Duncan gauge located?
The gauge is located in Greenlee County, Arizona at coordinates 32.7244°N, 109.0992°W. USGS site number: 09439000. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey