San Marcos River at Luling
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) 06/29/2025 9:45 AM CDTRecord: 41.9 ftCATEGORY STAGE 
Major Flooding 30 ft Moderate Flooding 24 ft Minor Flooding 20 ft Action 11 ft Reliability of the Forecast:
NOTE: Forecasts are issued routinely year-round.
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
- 40 - Devastating flooding reaches the lowest homes in Luling north and northeast of the golf course. All of Palmetto State Park at Ottine is under many feet of water. Water is nearly to the roof of the pavillion building. The Warm Springs rehabilitation hospital in Ottine has several feet of water in it.
- 36 - Palmetto State Park is under water except for the headquarters building. The pavillion has six feet of water in it. Much of the golf course in Luling is underwater. Lowest homes northeast of the golf course are threatened. The Warm Springs rehabilitation hospital in Ottine has several feet of water in it.
- 32 - Palmetto State Park is under water with water in the large pavillion building. There is extensive damage to roads, signs, camp sites and the pavillion building. Livestock are cut off and drowned in the flood plain below San Marcos to Gonzales. The lowest sections of the golf course in Luling are under water.
Gauge Info
| Coordinates | 29.6661, -97.6506 |
| RFC | WGRFC |
| State | TX |
| WFO | EWX |
| County | Caldwell |
| Data Provider(s) | |
| US Geological Survey | USGS--Water Resources of the United States |
| USGS | 08172000 |
Gauge Location
Recent Crests
| 1. | 30.56 ft | on 10-15-2021 |
| 2. | 30.09 ft | on 08-27-2017 |
| 3. | 36.27 ft | on 10-31-2015 |
| 4. | 27.79 ft | on 05-31-2015 |
| 5. | 36.58 ft | on 05-25-2015 |
Recent Crests
| 1. | 30.56 ft | on 10-15-2021 |
| 2. | 30.09 ft | on 08-27-2017 |
| 3. | 36.27 ft | on 10-31-2015 |
| 4. | 27.79 ft | on 05-31-2015 |
| 5. | 36.58 ft | on 05-25-2015 |
| 6. | 26.20 ft | on 05-18-2015 |
| 7. | 24.51 ft | on 04-24-2015 |
| 8. | 27.66 ft | on 06-10-2010 |
| 9. | 31.31 ft | on 07-21-2007 |
| 10. | 26.19 ft | on 03-31-2007 |
| 11. | 31.75 ft | on 03-12-2007 |
| 12. | 34.91 ft | on 11-22-2004 |
| 13. | 32.83 ft | on 11-18-2004 |
| 14. | 33.73 ft | on 07-06-2002 |
| 15. | 34.64 ft | on 11-16-2001 |
| 16. | 26.59 ft | on 11-04-2000 |
| 17. | 41.85 ft | on 10-18-1998 |
| 18. | 32.65 ft | on 06-23-1997 |
| 19. | 27.12 ft | on 05-31-1995 |
| 20. | 22.07 ft | on 12-28-1994 |
| 21. | 30.92 ft | on 02-05-1992 |
| 22. | 33.65 ft | on 12-22-1991 |
| 23. | 31.40 ft | on 06-04-1987 |
| 24. | 28.73 ft | on 12-23-1986 |
| 25. | 34.82 ft | on 06-14-1981 |
| 26. | 34.95 ft | on 09-12-1952 |
| 27. | 37.10 ft | on 05-29-1929 |
| 28. | 40.40 ft | on 01-01-1869 |
Historic Crests
| 1. | 41.85 ft | on 10-18-1998 |
| 2. | 40.40 ft | on 01-01-1869 |
| 3. | 37.10 ft | on 05-29-1929 |
| 4. | 36.58 ft | on 05-25-2015 |
| 5. | 36.27 ft | on 10-31-2015 |
Historic Crests
| 1. | 41.85 ft | on 10-18-1998 |
| 2. | 40.40 ft | on 01-01-1869 |
| 3. | 37.10 ft | on 05-29-1929 |
| 4. | 36.58 ft | on 05-25-2015 |
| 5. | 36.27 ft | on 10-31-2015 |
| 6. | 34.95 ft | on 09-12-1952 |
| 7. | 34.91 ft | on 11-22-2004 |
| 8. | 34.82 ft | on 06-14-1981 |
| 9. | 34.64 ft | on 11-16-2001 |
| 10. | 33.73 ft | on 07-06-2002 |
| 11. | 33.65 ft | on 12-22-1991 |
| 12. | 32.83 ft | on 11-18-2004 |
| 13. | 32.65 ft | on 06-23-1997 |
| 14. | 31.75 ft | on 03-12-2007 |
| 15. | 31.40 ft | on 06-04-1987 |
| 16. | 31.31 ft | on 07-21-2007 |
| 17. | 30.92 ft | on 02-05-1992 |
| 18. | 30.56 ft | on 10-15-2021 |
| 19. | 30.09 ft | on 08-27-2017 |
| 20. | 28.73 ft | on 12-23-1986 |
| 21. | 27.79 ft | on 05-31-2015 |
| 22. | 27.66 ft | on 06-10-2010 |
| 23. | 27.12 ft | on 05-31-1995 |
| 24. | 26.59 ft | on 11-04-2000 |
| 25. | 26.20 ft | on 05-18-2015 |
| 26. | 26.19 ft | on 03-31-2007 |
| 27. | 24.51 ft | on 04-24-2015 |
| 28. | 22.07 ft | on 12-28-1994 |
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.