Loading map...

1974 Map of Holcomb Reservoir

Name: 1974 Topographic Map of Holcomb Reservoir
Creator: U.S. Geological Survey
Published: 1977
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1977

About this map

Holcomb Reservoir and the winding course of the Frio River define this corner of Frio County, Texas, in the early 1970s. The landscape is a network of seasonal water management and drainage, where named creeks like Elm Creek and Jack Creek feed into broader basins. Notable topographic elevations like Pilot Knob and the English Hills break the horizon, providing orientation points for a region largely defined by ranching and resource extraction.

A distinct pattern of artificial water sources, referred to locally as tanks, punctuates the land. Features such as Garden Tank, Tutija Tank, and Llave Tank illustrate the historical necessity of capturing surface runoff for livestock in this semi-arid environment. The presence of numerous Gravel Pit sites and a prominent Radio Tower near the center of the sheet reflects the mid-century industrial and communications infrastructure supporting the rural economy.