Blanco River at Wimberley
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) 04/01/2025 6:15 PM CDTOfficial Forecast (FCST) 04/01/2025 8:04 AM CDTRecord: 44.9 ftCATEGORY STAGE 
Major Flooding 26 ft Moderate Flooding 17 ft Minor Flooding 13 ft Action 10 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
- 38 - The Highway 12 bridge becomes overtopped and is impassable. Disastrous life threatening flooding will flood hundreds of homes and businesses in and near Wimberley in the Blanco River and Cypress Creek flood plains. Many homes flood severely downstream in the lower Blanco and San Marcos River flood plains near San Marcos. This level will reach lower rural homes in the flood plain above Blanco to below San Marcos and can trap and drown hundreds of livestock. Roads near the river are extremely dangerous.
- 35 - Flood waters reach the base of the bridge on Highway 12.
- 31 - Disastrous life threatening flooding will flood over a hundred homes and businesses in and near Wimberley in the Blanco River and Cypress Creek flood plains. Many homes flood severely downstream in the lower Blanco and San Marcos River flood plains near San Marcos. This level will reach lower rural homes in the flood plain above Blanco to below San Marcos and can trap and drown hundreds of livestock. Roads near the river are extremely dangerous.
Gauge Info
| Coordinates | 29.9942, -98.0886 |
| RFC | WGRFC |
| State | TX |
| WFO | EWX |
| County | Hays |
| Data Provider(s) | |
| US Geological Survey | USGS--Water Resources of the United States |
| USGS | 08171000 |
Gauge Location
Recent Crests
| 1. | 14.57 ft | on 05-09-2019 |
| 2. | 26.54 ft | on 10-30-2015 |
| 3. | 44.90 ft | on 05-24-2015 |
| 4. | 26.75 ft | on 10-31-2013 |
| 5. | 20.79 ft | on 03-12-2007 |
Recent Crests
| 1. | 14.57 ft | on 05-09-2019 |
| 2. | 26.54 ft | on 10-30-2015 |
| 3. | 44.90 ft | on 05-24-2015 |
| 4. | 26.75 ft | on 10-31-2013 |
| 5. | 20.79 ft | on 03-12-2007 |
| 6. | 20.79 ft | on 03-12-2007 |
| 7. | 20.12 ft | on 11-17-2004 |
| 8. | 25.71 ft | on 07-05-2002 |
| 9. | 28.89 ft | on 11-16-2001 |
| 10. | 19.86 ft | on 11-10-2000 |
| 11. | 28.50 ft | on 10-17-1998 |
| 12. | 20.46 ft | on 06-09-1997 |
| 13. | 13.63 ft | on 06-07-1997 |
| 14. | 18.25 ft | on 03-04-1992 |
| 15. | 20.10 ft | on 12-21-1991 |
| 16. | 16.54 ft | on 07-17-1987 |
| 17. | 14.29 ft | on 10-07-1981 |
| 18. | 33.30 ft | on 05-28-1929 |
Historic Crests
| 1. | 44.90 ft | on 05-24-2015 |
| 2. | 33.30 ft | on 05-28-1929 |
| 3. | 28.89 ft | on 11-16-2001 |
| 4. | 28.50 ft | on 10-17-1998 |
| 5. | 26.75 ft | on 10-31-2013 |
Historic Crests
| 1. | 44.90 ft | on 05-24-2015 |
| 2. | 33.30 ft | on 05-28-1929 |
| 3. | 28.89 ft | on 11-16-2001 |
| 4. | 28.50 ft | on 10-17-1998 |
| 5. | 26.75 ft | on 10-31-2013 |
| 6. | 26.54 ft | on 10-30-2015 |
| 7. | 25.71 ft | on 07-05-2002 |
| 8. | 20.79 ft | on 03-12-2007 |
| 9. | 20.79 ft | on 03-12-2007 |
| 10. | 20.46 ft | on 06-09-1997 |
| 11. | 20.12 ft | on 11-17-2004 |
| 12. | 20.10 ft | on 12-21-1991 |
| 13. | 19.86 ft | on 11-10-2000 |
| 14. | 18.25 ft | on 03-04-1992 |
| 15. | 16.54 ft | on 07-17-1987 |
| 16. | 14.57 ft | on 05-09-2019 |
| 17. | 14.29 ft | on 10-07-1981 |
| 18. | 13.63 ft | on 06-07-1997 |
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.