San Antonio River at Elmendorf
Future / Actual / Minor
OWP 2.0 WWA Modal Title
01/11/2021, 10:04 PM UTC through 01/11/2021, 10:04 PM UTC
Sender
Sent
- Warning: no valid ratings curve available. Transformations to and from FEET/CFS/KCFS will not happen.
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Observed (OBS) 06/27/2025 8:30 PM CDTRecord: 64.2 ftCATEGORY STAGE 
Major Flooding 48 ft Moderate Flooding 39 ft Minor Flooding 35 ft Action 33 ft Reliability of the Forecast:
NOTE: Forecasts are issued as needed during times of high water, but are not routinely available.
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.
National Water Model Hydrograph
Official NWS streamflow forecasts are produced by NWS hydrologic forecasters for river gauge locations using hydrologic models which are calibrated to that location. This process considers additional guidance and information, including local expertise and experience, to produce the best forecast possible. The NWM output provides supplemental guidance to NWS forecasters and should not be considered an official NWS river forecast.
Flood Impacts
- 60 - Downstream in Wilson county people cut off by numerous flooded Farm to Market roads. Numerous homes are flooded in Wilson county as well.
- 52 - Widespread major flooding damages crops and pastureland. Roads and bridges are flooded and dangerous. Oil field pump jacks and irrigation pumps are flooded and damaged. Many livestock can be cut off and drowned.
- 48 - Major flooding near Elmendorf to above Goliad State Park isolates livestock, damages crops and roads, floods oil field tank batteries, pump jacks, irrigation pumps, and any equipment in the flood plain. Flooding is widespread.
Gauge Info
| Coordinates | 29.2219, -98.3556 |
| RFC | WGRFC |
| State | TX |
| WFO | EWX |
| County | Bexar |
| Data Provider(s) | |
| US Geological Survey | USGS--Water Resources of the United States |
| USGS | 08181800 |
Gauge Location
Recent Crests
| 1. | 42.63 ft | on 06-13-2025 |
| 2. | 38.64 ft | on 10-15-2021 |
| 3. | 39.91 ft | on 07-07-2021 |
| 4. | 44.82 ft | on 06-03-2016 |
| 5. | 44.99 ft | on 05-24-2015 |
Recent Crests
| 1. | 42.63 ft | on 06-13-2025 |
| 2. | 38.64 ft | on 10-15-2021 |
| 3. | 39.91 ft | on 07-07-2021 |
| 4. | 44.82 ft | on 06-03-2016 |
| 5. | 44.99 ft | on 05-24-2015 |
| 6. | 38.21 ft | on 04-25-2015 |
| 7. | 52.34 ft | on 05-26-2013 |
| 8. | 44.55 ft | on 07-26-2007 |
| 9. | 40.92 ft | on 06-29-2007 |
| 10. | 50.76 ft | on 11-23-2004 |
| 11. | 63.16 ft | on 07-06-2002 |
| 12. | 64.20 ft | on 10-18-1998 |
| 13. | 42.57 ft | on 06-24-1997 |
| 14. | 37.22 ft | on 06-29-1995 |
| 15. | 39.82 ft | on 05-27-1992 |
| 16. | 37.02 ft | on 02-04-1992 |
| 17. | 39.06 ft | on 12-22-1991 |
| 18. | 39.84 ft | on 07-16-1990 |
| 19. | 40.13 ft | on 06-01-1987 |
| 20. | 53.06 ft | on 06-05-1986 |
| 21. | 38.98 ft | on 10-11-1984 |
| 22. | 44.50 ft | on 06-14-1981 |
| 23. | 61.00 ft | on 09-27-1946 |
| 24. | 53.00 ft | on 06-28-1913 |
Historic Crests
| 1. | 64.20 ft | on 10-18-1998 |
| 2. | 63.16 ft | on 07-06-2002 |
| 3. | 61.00 ft | on 09-27-1946 |
| 4. | 53.06 ft | on 06-05-1986 |
| 5. | 53.00 ft | on 06-28-1913 |
Historic Crests
| 1. | 64.20 ft | on 10-18-1998 |
| 2. | 63.16 ft | on 07-06-2002 |
| 3. | 61.00 ft | on 09-27-1946 |
| 4. | 53.06 ft | on 06-05-1986 |
| 5. | 53.00 ft | on 06-28-1913 |
| 6. | 52.34 ft | on 05-26-2013 |
| 7. | 50.76 ft | on 11-23-2004 |
| 8. | 44.99 ft | on 05-24-2015 |
| 9. | 44.82 ft | on 06-03-2016 |
| 10. | 44.55 ft | on 07-26-2007 |
| 11. | 44.50 ft | on 06-14-1981 |
| 12. | 42.63 ft | on 06-13-2025 |
| 13. | 42.57 ft | on 06-24-1997 |
| 14. | 40.92 ft | on 06-29-2007 |
| 15. | 40.13 ft | on 06-01-1987 |
| 16. | 39.91 ft | on 07-07-2021 |
| 17. | 39.84 ft | on 07-16-1990 |
| 18. | 39.82 ft | on 05-27-1992 |
| 19. | 39.06 ft | on 12-22-1991 |
| 20. | 38.98 ft | on 10-11-1984 |
| 21. | 38.64 ft | on 10-15-2021 |
| 22. | 38.21 ft | on 04-25-2015 |
| 23. | 37.22 ft | on 06-29-1995 |
| 24. | 37.02 ft | on 02-04-1992 |
Gauge Photos
No Images Found
Collaborative Agencies
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.