Amistad National Recreation Area
Amistad National Recreation Area is located on the U.S.-Mexico border in southwest Texas in a transition zone between three major plant communities: the Chihuahuan Desert, Edwards Plateau, and Tamaulipan Shrubland. Three major rivers (Pecos, Devils River, and the Rio Grande) and the International Amistad Reservoir, formed on the Rio Grande, occur in Amistad. These diverse terrestrial and aquatic systems contribute to Amistad’s high level of biodiversity. In the fall, thousands of monarch butterflies roost in Amistad before continuing their migration south to wintering sites in Mexico. Many waterfowl species also spend the winter on the reservoir before returning north in the spring. Even endangered and threatened species, such as the least tern, use the reservoir to nest and raise young. Amistad was used by prehistoric humans whose rock art can be seen along the reservoir’s walls.