Major Flood
27.5 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
26 ft
Minor Flood
24.5 ft
Action Stage
24.5 ft
What Floods at Each Level
26 ft
Significant overbank flooding is occurring as this is the most water this stretch of the Rio Grande has seen since the great flood of 1904. The railroad bridge just above the river gauge site is likely under water.
24.5 ft
Some overbank flooding is in progress. The railroad bridge just above the river gauge may already be impassable.
23 ft
The Rio Grande is near to above bankfull and the railroad bridge just north of the river gauge may become inundated if further river rises occur.
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 |
|---|---|---|
| Aug 11, 2006 | 22.3 ft | 6,220 cfs |
| May 27, 1994 | 21.7 ft | 5,440 cfs |
| Sep 15, 1980 | 21.43 ft | 5,180 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 near San Marcial?
The Rio Grande near San Marcial gauge is maintained by USGS (site 08358400) 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 near San Marcial?
The NWS-defined flood stage for Rio Grande near San Marcial is 24.5 feet. Action stage begins at 24.5 feet. Moderate flooding starts at 26 feet, and major flooding at 27.5 feet.
How do I get alerts when Rio Grande rises?
Download StormCast free on Google Play, go to River Gauges, and add Rio Grande near San Marcial 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 near San Marcial gauge located?
The gauge is located in Socorro County, New Mexico at coordinates 33.6792°N, 106.9969°W. USGS site number: 08358400. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Rio Grande
On This River
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Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- 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.
- River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 12 hours into the future from the forecast issuance time.