
Choke Canyon Reservoir dominates the northeastern corner of this landscape, where the waters of the Frio River are impounded within McMullen County. This terrain is defined by a network of seasonal drainages and creek beds, including the winding course of Dragoon Cr and Salt Cr. The settlement of Zavisch sits among a landscape etched by ranching life, with numerous named roads such as Wentz Ranch Rd and Teal Ranch Rd providing access to remote tracts. Low-lying depressions like Black Hill Hollow and Dragoon Hollow break the undulating surface, while smaller water bodies like Singer Lake and Whitmire Lake offer focal points for local land use near the reservoir's edge.
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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
1925 · Simmons No. 1
USGS Topo · 1:48,000
1925 · Tilden No. 1
USGS Topo · 1:48,000
1925 · Crowther No. 3
USGS Topo · 1:48,000
1925 · Simmons No. 2
USGS Topo · 1:48,000
1929 · Simmons
USGS Topo · 1:62,500
1930 · Tilden
USGS Topo · 1:62,500
1930 · Whitsett
USGS Topo · 1:62,500
1942 · Tilden
USGS Topo · 1:62,500
1942 · Whitsett
USGS Topo · 1:62,500