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1955 Map of Imperial Reservoir, 1983 Print
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1955 Map of Imperial Reservoir

USGS Topo · Published 1983

About this map

The Colorado River defines this landscape along the border of Arizona and California, where mid-century water management efforts are clearly visible. The massive Imperial Reservoir and Imperial Dam Spillway serve as the focal point for irrigation, feeding the Gila Main Canal and utilizing large Desilting Basins to manage the river's heavy sediment load. This survey captures the transition from pioneer-era river landings to modern military and conservation uses. For example, while the Castle Dome Landing (Site) is marked as a historic location, active development appears at Fishers Landing and the Yuma Test Station. Further inland, the Chocolate Mountains rise to the west, where the Old Senator Mine and Senator Wash indicate the area's prospecting history within the Imperial National Wildlife Refuge.

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Map Details

Date Portrayed1955
Date Published1983
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22 x 26.8 inches

Editions of this 1955 Imperial Reservoir Map

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain