Major Flood
13 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
11 ft
Minor Flood
9 ft
Action Stage
7 ft
What Floods at Each Level
15 ft
Major flooding. Flood waters move across Stadium Drive and into homes near Adams State College
14.5 ft
Major flooding. Flood waters move into homes along Lakewood and Riverwood Drives in northeast Alamosa
14 ft
Major flooding. Flood waters inundate apartments along River Drive in northeast Alamosa
13.5 ft
Major flooding. Water reaches base of Highway 160 Bridge and spills into homes and park near the bridge
13 ft
Major flooding. Water reaches base of State Avenue Bridge.
11.5 ft
Moderate flooding. Water overtops low spots in levee protecting Alamosa and begins to flow into Cattails Golf Course and nearby homes
11 ft
Moderate flooding. Moderate agricultural flooding. Water begins to overtop low spots in levee protecting Alamosa.
9 ft
Minor flooding. Minor agricultural flooding in low lying areas along the river
7 ft
Action Stage. The river is bankfull along portions of the reach from 8 miles upstream to 1 mile downstream.
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 19, 1949 | 10.62 ft | 6,350 cfs |
| May 22, 1948 | 9.97 ft | — |
| Jun 4, 1948 | 9.87 ft | 5,160 cfs |
About This Gauge
Get Flood Alerts for Rio Grande
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 Rio Grande at Alamosa?
The Rio Grande at Alamosa gauge is maintained by USGS (site 08223000) 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 Rio Grande at Alamosa?
The NWS-defined flood stage for Rio Grande at Alamosa is 9 feet. Action stage begins at 7 feet. Moderate flooding starts at 11 feet, and major flooding at 13 feet.
How do I get alerts when Rio Grande rises?
Download StormCast free on Google Play, go to River Gauges, and add Rio Grande at Alamosa 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 Rio Grande at Alamosa gauge located?
The gauge is located in Alamosa County, Colorado at coordinates 37.4814°N, 105.8800°W. USGS site number: 08223000. Data is provided by the U.S. Geological Survey and the National Weather Service.
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On This River
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Source & Notes
Data provided by: Data courtesy of Colorado Division of Water Resources
- River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.
- Stage may be affected by ice during winter months.