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1997 Map of Imperial Reservoir, 2003 Print
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1997 Map of Imperial Reservoir

USGS Topo · Published 2003

About this map

The Imperial Reservoir and the Imperial Dam Spillway 181 anchor this landscape along the border of California and Arizona. The map illustrates a complex water management system where the Colorado River feeds the Gila Main Canal and the Desilting Basin, critical for the region's agricultural and civil development. While much of the riverbank is preserved within the Imperial National Wildlife Refuge, evidence of historical human activity remains visible through the Old Senator Mine and the Castle Dome Landing (Site). The eastern portion of the quadrangle is dominated by the Yuma Test Station and its Military Reservation Boundary, showing a sharp contrast between the managed waterways and the arid desert terrain of the Chocolate Mountains. Local points of interest include Fishers Landing and Martinez Lake, centers for river-based recreation and settlement.

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Map Details

Date Portrayed1997
Date Published2003
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions21.5 x 26.6 inches

Editions of this 1997 Imperial Reservoir Map

This is the sole edition of this map. No revisions or reprints were ever made.

Historical Maps of Martinez Lake Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain