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1978 Map of Zion Reservoir
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1978 Map of Zion Reservoir

USGS Topo · Published 1978

About this map

Water management in this arid stretch of the High Plateau is the defining characteristic of this 1970s landscape, centered on the Zion Reservoir and the Little Colorado River. The map details an intricate system of irrigation including the Upper Lyman Ditch, Middle Lyman Ditch, and Lower Lyman Ditch, which divert water toward the agricultural lands surrounding St Johns. This infrastructure allowed for the expansion of ranching and farming in a region otherwise dominated by drainages like Carrizo Wash and Big Hollow Wash.

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Map Details

Date Portrayed1978
Date Published1978
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22.1 x 26.8 inches

Editions of this 1978 Zion Reservoir Map

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain