Mercedes

Mercedes is located in Hidalgo County in South Texas in a geographic area called the Lower Rio Grande Valley, which is really a river delta at the mouth of the Rio Grande River first inhabited by Coahuiltecans. Spanish colonists arrived in this area in 1749 to establish ranching communities. In 1905, the American Rio Grande Land and Irrigation Company purchased land in the Llano Grande Spanish land grant, built Mercedes as a showcase headquarters, constructed the largest irrigation system t...