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2010 Map of Dunlap Sill

Name: 2010 Topographic Map of Dunlap Sill
Creator: U.S. Geological Survey
Published: 2010
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2010

About this map

Martin Ranch and the Rock House anchor this arid New Mexico landscape, which centers on the namesake Dunlap Sill geologic formation. The drainage patterns of Wylie Draw and South Wylie Draw dominate the northern half of the sheet, while Huggins Draw and Horse Creek carve through the east.

Water management is the primary human footprint here, reflected in a dense network of windmills and tanks used to support ranching operations. Features such as the Barnhill Windmill, Pollard Windmill, and Steel Windmills are essential landmarks, feeding vital catchments like North Red Tank, Walker Tank, and the dual Roosevelt Tanks. This map captures a specific ranching infrastructure where family-named improvements like Scott Tank and Clardy Tank define land use and movement.