San Antonio River at Loop 410
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
- Upstream gauge unavailableWarning: no valid ratings curve available. Transformations to and from FEET/CFS/KCFS will not happen.
Traces and Thresholds Click to turn on/off display
Observed (OBS) 06/22/2025 5:15 AM CDTRecord: 34.2 ftCATEGORY STAGE 
Major Flooding 26 ft Moderate Flooding 20 ft Minor Flooding 12 ft Action 12 ft Reliability of the Forecast:
NOTE: Forecasts are not available. Only observed stages are available for this point.
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
- 30 - Drainage from above loop 410 and Brooks City Base cuts streets and areas below Loop 410 in the San Antonio River flood plain off. Several homes have a few feet of water in them.
- 27 - Three residences below Loop 410 on the left bank flood. Roads into the area are flooded and dangerous.
- 26 - Major flooding reaches slabs of residences on the left bank below Southeast Loop 410. Roads and streets near the San Antonio River are severely flooded and very dangerous.
Gauge Info
| Coordinates | 29.3219, -98.4500 |
| RFC | WGRFC |
| State | TX |
| WFO | EWX |
| County | Bexar |
| Data Provider(s) | |
| US Geological Survey | USGS--Water Resources of the United States |
| USGS | 08178565 |
Gauge Location
Recent Crests
| 1. | 15.68 ft | on 10-14-2021 |
| 2. | 12.61 ft | on 10-09-2018 |
| 3. | 27.43 ft | on 06-02-2016 |
| 4. | 27.60 ft | on 05-24-2015 |
| 5. | 18.51 ft | on 04-25-2015 |
Recent Crests
| 1. | 15.68 ft | on 10-14-2021 |
| 2. | 12.61 ft | on 10-09-2018 |
| 3. | 27.43 ft | on 06-02-2016 |
| 4. | 27.60 ft | on 05-24-2015 |
| 5. | 18.51 ft | on 04-25-2015 |
| 6. | 34.21 ft | on 05-25-2013 |
| 7. | 32.57 ft | on 10-17-1998 |
| 8. | 16.74 ft | on 06-21-1997 |
| 9. | 15.07 ft | on 09-15-1996 |
| 10. | 22.45 ft | on 06-29-1995 |
| 11. | 19.37 ft | on 05-13-1994 |
| 12. | 22.65 ft | on 05-05-1993 |
| 13. | 29.36 ft | on 05-27-1992 |
| 14. | 21.75 ft | on 06-23-1991 |
| 15. | 32.20 ft | on 07-15-1990 |
| 16. | 21.67 ft | on 07-21-1988 |
| 17. | 26.79 ft | on 05-19-1987 |
Historic Crests
| 1. | 34.21 ft | on 05-25-2013 |
| 2. | 32.57 ft | on 10-17-1998 |
| 3. | 32.20 ft | on 07-15-1990 |
| 4. | 29.36 ft | on 05-27-1992 |
| 5. | 27.60 ft | on 05-24-2015 |
Historic Crests
| 1. | 34.21 ft | on 05-25-2013 |
| 2. | 32.57 ft | on 10-17-1998 |
| 3. | 32.20 ft | on 07-15-1990 |
| 4. | 29.36 ft | on 05-27-1992 |
| 5. | 27.60 ft | on 05-24-2015 |
| 6. | 27.43 ft | on 06-02-2016 |
| 7. | 26.79 ft | on 05-19-1987 |
| 8. | 22.65 ft | on 05-05-1993 |
| 9. | 22.45 ft | on 06-29-1995 |
| 10. | 21.75 ft | on 06-23-1991 |
| 11. | 21.67 ft | on 07-21-1988 |
| 12. | 19.37 ft | on 05-13-1994 |
| 13. | 18.51 ft | on 04-25-2015 |
| 14. | 16.74 ft | on 06-21-1997 |
| 15. | 15.68 ft | on 10-14-2021 |
| 16. | 15.07 ft | on 09-15-1996 |
| 17. | 12.61 ft | on 10-09-2018 |
Gauge Photos
No Images Found
Probability Information
No Images Available
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.