| View KML View WKT | United States Rivers |
View GeoJSON Search  |
San Marcos River
| States | Texas |
| Length | 85.8 miles |
| Watershed Length* | 426 miles |
| Mouth | Guadalupe River ⤏ Gulf of Mexico |
| GNIS | 1375972 |
Tributaries
Click on a heading to sort by its values. Click again to sort in the opposite direction.
| Name | Distance from Mouth (miles) | Length (miles) | Watershed Length (miles) |
|---|---|---|---|
| Blanco River | 77 | 92 | 130 |
| Plum Creek | 26 | 56 | 121 |
| Purgatory Creek | 81 | 20 | 20 |
| Sink Creek | 83 | 19 | 19 |
| York Creek | 51 | 33 | 51 |
* Note: Watershed is mostly rivers/streams 15+ miles in length.
Data from United States Geological Survey