Rio Grande Wild & Scenic River.

Stretching across nearly 200 miles of the U.S.–Mexico border, the Rio Grande Wild & Scenic River is a protected, free-flowing corridor slicing through the heart of the Chihuahuan Desert. This remote waterway is defined by its sheer isolation, carving dramatic, stratified limestone canyons like Santa Elena and Boquillas. Because there is little to no traditional park infrastructure, the experience here is defined by self-reliance, profound solitude, and river travel. Adventurers come to navigate the quiet pools and occasional rapids on multi-day float trips, drifting beneath towering canyon walls that shelter a delicate riparian ecosystem. It is a stark, geologically layered landscape where the river serves as both a vital desert lifeline and a fluid international boundary.