2022 Map of Holcomb Reservoir

About this map

Pilot Knob and the English Hills dominate this portion of Frio County, where a complex network of seasonal drainages and stock tanks defines the rural landscape. The topography is shaped by the winding courses of Elm Cr, Jack Cr, and Live Oak Cr, all feeding toward the Frio River in the northeast. This 2022 survey illustrates the vital importance of water management in South Texas ranching, documenting numerous named reservoirs and tanks such as Garden Tank, Tutiga Tank, and Llave Tank. Transportation is limited to arterial routes like W FM 140 and local connectors like Co RD 4757, reflecting a sparsely populated region dedicated to large-scale landholdings. Researchers can observe how modern land use still follows the natural contours of the creeks and hills that have long dictated movement through this brush country.