West Fork San Jacinto River near Conroe
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.
Traces and Thresholds Click to turn on/off display
Observed (OBS) 06/23/2025 2:15 PM CDTRecord: 126.9 ftCATEGORY STAGE 
Major Flooding 117.8 ft Moderate Flooding 116.8 ft Minor Flooding 115.8 ft Action 114.8 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
- 126.93 - Flood of Record set on 8/29/2017 during Harvey
- 126.09 - Previous flood of record on October 18, 1994.
- 117.8 - Major lowland flooding begins.
Gauge Location
Recent Crests
| 1. | 121.82 ft | on 05-03-2024 |
| 2. | 126.93 ft | on 08-29-2017 |
| 3. | 121.14 ft | on 05-28-2016 |
| 4. | 116.51 ft | on 05-28-2015 |
| 5. | 116.05 ft | on 05-13-2015 |
Recent Crests
| 1. | 121.82 ft | on 05-03-2024 |
| 2. | 126.93 ft | on 08-29-2017 |
| 3. | 121.14 ft | on 05-28-2016 |
| 4. | 116.51 ft | on 05-28-2015 |
| 5. | 116.05 ft | on 05-13-2015 |
| 6. | 114.24 ft | on 02-13-2004 |
| 7. | 118.95 ft | on 11-06-2002 |
| 8. | 117.18 ft | on 06-09-2001 |
| 9. | 121.61 ft | on 11-14-1998 |
| 10. | 115.23 ft | on 01-08-1998 |
| 11. | 108.77 ft | on 12-21-1995 |
| 12. | 116.67 ft | on 01-27-1995 |
| 13. | 116.11 ft | on 12-19-1994 |
| 14. | 126.10 ft | on 10-18-1994 |
| 15. | 114.23 ft | on 01-22-1993 |
| 16. | 114.11 ft | on 01-21-1991 |
| 17. | 112.19 ft | on 04-01-1990 |
| 18. | 109.83 ft | on 11-25-1987 |
| 19. | 111.53 ft | on 06-14-1987 |
| 20. | 115.16 ft | on 11-25-1985 |
| 21. | 113.22 ft | on 10-25-1984 |
| 22. | 117.95 ft | on 05-22-1983 |
| 23. | 115.48 ft | on 06-14-1981 |
| 24. | 118.51 ft | on 04-18-1979 |
| 25. | 115.04 ft | on 04-22-1977 |
| 26. | 115.21 ft | on 01-26-1974 |
| 27. | 116.41 ft | on 06-13-1973 |
| 28. | 116.70 ft | on 06-25-1968 |
| 29. | 116.66 ft | on 12-30-1962 |
| 30. | 119.70 ft | on 10-30-1960 |
| 31. | 121.78 ft | on 06-27-1960 |
| 32. | 120.36 ft | on 04-19-1959 |
| 33. | 119.30 ft | on 11-24-1957 |
| 34. | 119.75 ft | on 05-01-1957 |
| 35. | 119.70 ft | on 02-07-1955 |
| 36. | 119.75 ft | on 05-16-1953 |
| 37. | 119.10 ft | on 04-25-1952 |
| 38. | 123.22 ft | on 06-03-1950 |
| 39. | 119.58 ft | on 02-28-1949 |
| 40. | 115.08 ft | on 03-02-1948 |
| 41. | 121.75 ft | on 11-06-1946 |
| 42. | 121.47 ft | on 03-14-1946 |
| 43. | 123.15 ft | on 08-30-1945 |
| 44. | 119.90 ft | on 02-01-1944 |
| 45. | 116.77 ft | on 05-31-1943 |
| 46. | 120.26 ft | on 04-10-1942 |
| 47. | 119.91 ft | on 06-12-1940 |
| 48. | 120.50 ft | on 05-30-1929 |
| 49. | 123.00 ft | on 04-22-1926 |
| 50. | 123.00 ft | on 05-01-1922 |
Historic Crests
| 1. | 126.93 ft | on 08-29-2017 |
| 2. | 126.10 ft | on 10-18-1994 |
| 3. | 123.22 ft | on 06-03-1950 |
| 4. | 123.15 ft | on 08-30-1945 |
| 5. | 123.00 ft | on 05-01-1922 |
Historic Crests
| 1. | 126.93 ft | on 08-29-2017 |
| 2. | 126.10 ft | on 10-18-1994 |
| 3. | 123.22 ft | on 06-03-1950 |
| 4. | 123.15 ft | on 08-30-1945 |
| 5. | 123.00 ft | on 05-01-1922 |
| 6. | 123.00 ft | on 04-22-1926 |
| 7. | 121.82 ft | on 05-03-2024 |
| 8. | 121.78 ft | on 06-27-1960 |
| 9. | 121.75 ft | on 11-06-1946 |
| 10. | 121.61 ft | on 11-14-1998 |
| 11. | 121.47 ft | on 03-14-1946 |
| 12. | 121.14 ft | on 05-28-2016 |
| 13. | 120.50 ft | on 05-30-1929 |
| 14. | 120.36 ft | on 04-19-1959 |
| 15. | 120.26 ft | on 04-10-1942 |
| 16. | 119.91 ft | on 06-12-1940 |
| 17. | 119.90 ft | on 02-01-1944 |
| 18. | 119.75 ft | on 05-01-1957 |
| 19. | 119.75 ft | on 05-16-1953 |
| 20. | 119.70 ft | on 10-30-1960 |
| 21. | 119.70 ft | on 02-07-1955 |
| 22. | 119.58 ft | on 02-28-1949 |
| 23. | 119.30 ft | on 11-24-1957 |
| 24. | 119.10 ft | on 04-25-1952 |
| 25. | 118.95 ft | on 11-06-2002 |
| 26. | 118.51 ft | on 04-18-1979 |
| 27. | 117.95 ft | on 05-22-1983 |
| 28. | 117.18 ft | on 06-09-2001 |
| 29. | 116.77 ft | on 05-31-1943 |
| 30. | 116.70 ft | on 06-25-1968 |
| 31. | 116.67 ft | on 01-27-1995 |
| 32. | 116.66 ft | on 12-30-1962 |
| 33. | 116.51 ft | on 05-28-2015 |
| 34. | 116.41 ft | on 06-13-1973 |
| 35. | 116.11 ft | on 12-19-1994 |
| 36. | 116.05 ft | on 05-13-2015 |
| 37. | 115.48 ft | on 06-14-1981 |
| 38. | 115.23 ft | on 01-08-1998 |
| 39. | 115.21 ft | on 01-26-1974 |
| 40. | 115.16 ft | on 11-25-1985 |
| 41. | 115.08 ft | on 03-02-1948 |
| 42. | 115.04 ft | on 04-22-1977 |
| 43. | 114.24 ft | on 02-13-2004 |
| 44. | 114.23 ft | on 01-22-1993 |
| 45. | 114.11 ft | on 01-21-1991 |
| 46. | 113.22 ft | on 10-25-1984 |
| 47. | 112.19 ft | on 04-01-1990 |
| 48. | 111.53 ft | on 06-14-1987 |
| 49. | 109.83 ft | on 11-25-1987 |
| 50. | 108.77 ft | on 12-21-1995 |
Vertical Datum Table
| type | NAVD88 |
|---|---|
| major Flooding | 117.80 ft |
| moderate Flooding | 116.80 ft |
| minor Flooding | 115.80 ft |
| action | 114.80 ft |
| Latest Value | 94.69 ft |
| Gauge Zero | 0.00 ft |
Gauge Photos
No Images Found
Unique Local Info
The datum of this gauge changed from 95.03 feet NGVD29 to 0 feet NAVD88, 2001 adjustment on October 1, 2012. This change became effective on January 3, 2013 and required an adjustment of action and flood stages as well as historical data.
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.
Resources
Hydrologic Resource Links
Additional Resource Links
- NWS Precipitation and River Forecasting
- Area Hydrographs
- West Gulf River Forecast Center
- Harris County Flood Control District
- Brazoria County Office of Emergency Management
- Fort Bend County
- State of Texas Office of Emergency Management
- Trinity River Authority
- San Jacinto River Authority
- Brazos River Authority
- Lower Colroado River Authority
- Lavaca-Navidad River Authority
- Snow Information