|Río San Rodrigo|
|Source||Sierra Madre Oriental|
|⁃ elevation||1,260 m (4,130 ft)|
|El Moral, Coahuila, near Quemado, Texas|
|230 m (750 ft)|
|Basin size||2,717 km2 (1,049 sq mi)|
|⁃ location||IBWC station 08-4571.00 at El Moral, Coahuila|
|⁃ average||3.82 m3/s (135 cu ft/s)|
|⁃ minimum||0 m3/s (0 cu ft/s)|
|⁃ maximum||1,260 m3/s (44,000 cu ft/s)|
The Rio San Rodrigo originates in the Sierra del Burro, a northern finger of the Sierra Madre Oriental, and flows generally east to the Rio Grande. La Fragua Dam impounds the river at about river kilometer 20, creating La Fragua Reservoir. The dam began operations in 1991. The reservoir's storage capacity is 36,482 acre feet (45,000,000 m3).
In 1849 a group of Seminoles migrated from Indian Territory to Mexico to establish a military colony. Led by Wild Cat, a noted Seminole chief, and John Horse (Gopher John), the leader of the Black Seminoles, the group consisted of about one hundred Seminoles and one hundred Black Seminoles. About five hundred Kickapoos from Missouri joined Wild Cat's group on the Rio Grande at Eagle Pass. In July, 1850, the group was admitted to Mexico. Wild Cat, representing the entire group, was assigned approximately 70,000 acres (28,000 ha), half at the headwaters of the Rio San Rodrigo and half at the headwaters of the Rio San Antonio. The citizens of Remolino, nearby, were not pleased and complained to the provisional government in Coahuila, which issued a decree saying that other lands would be found upon which the Indians could be settled. Nevertheless, some of the Indians did eventually settle near Remolino.
- Calculated in Google Maps
- Rio San Rodrigo at GEOnet Names Server and adjusted with Google Maps
- "Water Bulletin Number 75: Flow of the Rio Grande and Related Data; From Elephant Butte Dam, New Mexico to the Gulf of Mexico". International Boundary and Water Commission. 2005. Retrieved 17 July 2010.
- Rogers, Jerry R., ed. (2007). Environmental and Water Resources: Milestones in Engineering History. American Society of Civil Engineers. p. 50. ISBN 978-0-7844-0928-2.
- Latorre, Felipe A.; Dolores L. Latorre (1991). The Mexican Kickapoo Indians. Courier Dover. pp. 12–14. ISBN 978-0-486-26742-5.