Summary of Watershed Conditions in the Guadalupe River Basin Friday, April 17, 2026
This page is updated once a day with data obtained from USGS.
| Flow (cfs) | % of Daily Median | |
| A. Guadalupe River @ Comfort | 50 | 46% |
| B. Canyon Reservoir | ||
| Inflow | 38 | 22% |
| Release | 72 | 34% |
| Full Res. Elev. - msl (Conservation pool) | 909 | |
| Reservoir Elev. - msl | 886.36 | |
| Capacity (Conservation pool) | 58% | |
| C. Blanco River @ Wimberley | 4 | 6% |
| D. Comal Springs | 59 | 19% |
| E. San Marcos Springs | 75 | 47% |
| F. Guadalupe River @ Gonzales | 166 | 17% |
| G. Guadalupe River @ Victoria | 328 | 32% |
| H. San Antonio River @ Goliad | 260 | 71% |
| I. Guadalupe River @ Tivoli | 1440 | 96% |
| Bay & Estuary Inflow | 1280 | |
Watershed Charts
| Full Reservoir Elevation | Daily Elevation | |
|---|---|---|
| Elevation | 909 | 886.36 |
| Historical | Current | |
|---|---|---|
| Spring Branch (Inflow) | 169 | 38 |
| Sattler (Release) | 209 | 72 |
| Historical | Current | |
|---|---|---|
| Comal | 304 | 59 |
| San Marcos | 161 | 75 |
| Canyon Release | Comal Springs | Natural Baseflow | |
|---|---|---|---|
| Source Percentages | 51.4 | 42.1 | 6.5 |
| Canyon Release | Comal Springs | San Marcos Springs | Natural Baseflow | |
|---|---|---|---|---|
| Source Percentages | 22.0 | 18.0 | 22.9 | 37.1 |