The Nueces River is a river in the U.S. state of Texas, approximately 315 mi (507 km) long. It drains a region in central and southern Texas southeastward into the Gulf of Mexico. It is the southernmost major river in Texas north of the Rio Grande.
It rises northwest of San Antonio in the Edwards Plateau, in Real County approximately 50 mi (80 km) north of Uvalde. It flows south throgh the Texas Hill Country, past Barksdale and Crystal City, approaching to within 35 mi (56 km) of the Rio Grande on the border with Mexico. East of Carrizo Springs it turns to the east, flowing the scrub plains of South Texas, across rural Dimmit, La Salle,and McMullen counties. In central Live Oak County it is joined from the northwest by the Frio River, then flows southeast along the coastal plain past Mathis, where it is impounded to form the Lake Corpus Christi reservoir. It enters Corpus Christi Bay on the Gulf of Mexico at Corpus Christi.
During the existence of the short-lived Republic of Texas, Mexico claimed the Rio Nueces as being Texas' border, while Texas claimed the Rio Grande as their southern border.
With respect to the CRP, the NRA is responsible for the Nueces River Basin, the San Antonio - Nueces Coastal Basin, and the Nueces - Rio Grande River Basin (Figure 1) (Adobe Acrobat Format).
Surface water data are collected quarterly at eight stations in the Nueces River Basin, ten in the San Antonio - Nueces Coastal Basin, and two in the Nueces - Rio Grande River Basin by the NRA.
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