2022 Map of Castolon OE S

About this map

The Rio Grande serves as the dominant geographical and political boundary on this Brewster County survey, carving a winding path that separates the Usa from Mexico. This particular reach captures the northernmost section of the river within the quadrangle, where a small portion of Big Bend National Park is visible in the northeast corner. The landscape is defined by an intricate network of desert washes and drainage patterns flowing south toward the river. Transportation is limited to the remote River Rd W, which skirts the park boundary and follows the natural contour of the river valley. This document provides a detailed look at the arid topography and international border as it existed in the early twenty-first century, highlighting the intersection of protected federal land and the river corridor.