Guadalupe River at Canyon Lake
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.No secondary data available. Transformations for Flow data and a secondary Y axis cannot be made at this time.
Traces and Thresholds Click to turn on/off display
Observed (OBS) 07/03/2025 6:15 PM CDTNormal Pool: 909 ftRecord: 950 ftCATEGORY STAGE 
Major Flooding 945 ft Moderate Flooding 945 ft Minor Flooding 943 ft Action 943 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
- 943 - Flow goes uncontrolled across the emergency spillway. Lakeside recreation facilities flood. Parks, docks, marinas, restaurants, and lakeside roads are severely flooded and damaged.
- 930 - All marinas, docks, parks, and roads to facilities around the lake are under water.
- 913 - Canyon Lake is four feet into the flood pool, potentially damaging boats and flooding docks if ties are not loosened.
Gauge Location
Recent Crests
| 1. | 950.02 ft | on 07-06-2002 |
| 2. | 937.57 ft | on 06-27-1997 |
| 3. | 937.31 ft | on 03-09-1992 |
| 4. | 930.76 ft | on 12-28-1991 |
| 5. | 942.68 ft | on 06-19-1987 |
Recent Crests
| 1. | 950.02 ft | on 07-06-2002 |
| 2. | 937.57 ft | on 06-27-1997 |
| 3. | 937.31 ft | on 03-09-1992 |
| 4. | 930.76 ft | on 12-28-1991 |
| 5. | 942.68 ft | on 06-19-1987 |
| 6. | 930.61 ft | on 08-04-1978 |
Historic Crests
| 1. | 950.02 ft | on 07-06-2002 |
| 2. | 942.68 ft | on 06-19-1987 |
| 3. | 937.57 ft | on 06-27-1997 |
| 4. | 937.31 ft | on 03-09-1992 |
| 5. | 930.76 ft | on 12-28-1991 |
Historic Crests
| 1. | 950.02 ft | on 07-06-2002 |
| 2. | 942.68 ft | on 06-19-1987 |
| 3. | 937.57 ft | on 06-27-1997 |
| 4. | 937.31 ft | on 03-09-1992 |
| 5. | 930.76 ft | on 12-28-1991 |
| 6. | 930.61 ft | on 08-04-1978 |
Gauge Photos
No Images Found
Probability Information
No Images Available
Unique Local Info
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.