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1986 Map of Washington

Name: 1986 Topographic Map of Washington
Creator: U.S. Geological Survey
Published: 1987
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1987

About this map

Washington and the northeastern edges of St George anchor this mid-1980s topographical study of the southern Utah landscape. The map illustrates a region defined by dramatic basaltic and sedimentary formations, most notably the Middleton Black Ridge and the Lava Ridge that separates Big Sand Hollow from the volcanic flows of Snow Canyon State Park.

Water management and natural hydrology are central to the settlement patterns shown, from the Black Knolls Reservoir and Green Spring to the seasonal drainage of Middleton Wash. The northern reaches include the high timber and plateaus of Dixie National Forest and Cedar Bench, providing a clear record of the interface between wilderness and the expanding residential footprints of the St. George basin during this era.