2022 Map of Allen Ranch

About this map

Big Canyon dominates the northern landscape of this Terrell County region, carved through the arid high country of West Texas. The terrain is defined by a dense network of drainage patterns and draws that funnel toward the south, including the prominent Downie Draw in the southwestern corner. This area is characterized by large-scale ranching and remote infrastructure, where transportation is limited to established thoroughfares such as Walker Rd and Hardgrove Rd. The map illustrates the sparsely populated nature of the Edwards Plateau transition, with widely dispersed tracks like Allen Rd and Running W Rd providing the only terrestrial access across the dissected plateaus. The topography reveals the complex erosional history of the Trans-Pecos, where elevation changes are sharp and closely tied to the seasonal watercourses that define the county's physical geography.