The Concho River is a river in the U.S. state of Texas. Concho is Spanish for "shell"; the river was so named due to its abundance of freshwater mussels, such as the Tampico pearly mussel.
The Concho Valley is a region in West Texas. The region takes its name from the Concho River, named due to its abundance of freshwater mussels in the river.
Concho River
…Concho County, Texas Concho Valley North Concho River from the Handbook of Texas Online…
The Concho River running through a park in San Angelo.