| Río Álamo | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Mexico |
| Subdivision Type2: | State |
| Subdivision Name2: | Tamaulipas |
| Discharge1 Location: | IBWC station 08-4642 at Ciudad Mier |
| Discharge1 Min: | 0m3/s |
| Discharge1 Avg: | 3.67m3/s |
| Discharge1 Max: | 2470m3/s |
| Mouth: | Rio Grande |
| Mouth Location: | Ciudad Mier |
| Mouth Coordinates: | 26.4167°N -105°W |
| Basin Size: | 4339km2 |
The Río Álamo, is a stream in the state of Tamaulipas, Mexico, and is a tributary of the Rio Grande. It is impounded by Las Blancas Dam, which was completed in 2001 and diverts water to the Marte Gómez Reservoir on the Rio San Juan, another tributary of the Rio Grande.[1]
The Rio Alamo enters the Rio Grande (Rio Bravo del Norte in Mexico) at Rio Grande river kilometer 422km (262miles), about 20km (10miles) downriver from Falcon Dam.[1]