The Hagist Ranch Oil Field and Seven Sisters Oil Field dominate this portion of the South Texas brush country, illustrating the region's enduring energy economy. Scattered ranching outposts such as Hagist Ranch and Foster Ranch are connected by a network of rural roads, including FM-624 and Walker Rd. Water sources are sparse but critical to the landscape, with Charco Valiente Spring providing a natural focal point amidst seasonal drainages like Drummond Cr and San Jose Cr. The settlement of Seven Sisters lies near the southern edge of the quadrangle, while the namesake Loma Alta and the prominent Loma Pinta rise above the drainage of Black Cr. Industrial infrastructure is visible through features like the Hagist Ranch Gas Plant, showing how the land has been utilized for both livestock and mineral extraction in McMullen County.
22 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1920 · Mikeska
USGS Topo · 1:125,000
1937 · Loma Alta
USGS Topo · 1:62,500
1953 · Crystal City
USGS Topo · 1:250,000
1955 · Crystal City
USGS Topo · 1:250,000
1956 · Rosita Ranch
USGS Topo · 1:62,500
1956 · Freer
USGS Topo · 1:62,500
1956 · Laredo
USGS Topo · 1:250,000
1961 · Crystal City
USGS Topo · 1:250,000
1968 · Crystal City
USGS Topo · 1:250,000
1969 · Loma Alta NE
USGS Topo · 1:24,000