Summary of Watershed Conditions in the Guadalupe River Basin Monday, December 15, 2025
This page is updated once a day with data obtained from USGS.
| Flow (cfs) | % of Daily Median | |
| A. Guadalupe River @ Comfort | 49 | 42% |
| B. Canyon Reservoir | ||
| Inflow | 42 | 28% |
| Release | 61 | 54% |
| Full Res. Elev. - msl (Conservation pool) | 909 | |
| Reservoir Elev. - msl | 888.95 | |
| Capacity (Conservation pool) | 62% | |
| C. Blanco River @ Wimberley | 7 | 15% |
| D. Comal Springs | 60 | 19% |
| E. San Marcos Springs | 79 | 48% |
| F. Guadalupe River @ Gonzales | 196 | 26% |
| G. Guadalupe River @ Victoria | 197 | 22% |
| H. San Antonio River @ Goliad | 210 | 61% |
| I. Guadalupe River @ Tivoli | 449 | 34% |
| Bay & Estuary Inflow | 319 | |
Watershed Charts
| Full Reservoir Elevation | Daily Elevation | |
|---|---|---|
| Elevation | 909 | 888.95 |
| Historical | Current | |
|---|---|---|
| Spring Branch (Inflow) | 152 | 42 |
| Sattler (Release) | 114 | 61 |
| Historical | Current | |
|---|---|---|
| Comal | 308 | 60 |
| San Marcos | 164 | 79 |
| Canyon Release | Comal Springs | Natural Baseflow | |
|---|---|---|---|
| Source Percentages | 41.2 | 40.5 | 18.3 |
| Canyon Release | Comal Springs | San Marcos Springs | Natural Baseflow | |
|---|---|---|---|---|
| Source Percentages | 30.5 | 30.0 | 39.5 | 0 |