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2021 Map of Union Island, 2021 Print
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2021 Map of Union Island

USGS Topo · Published 2021

About this map

The intricate waterways of the San Joaquin Delta define the landscape of Union Island and Roberts Island, where reclaimed land is protected by an extensive levee system including S Wing Levee Rd. This 2021 survey highlights the engineered hydrology of the San Joaquin Valley, dominated by the Old River and Middle River. Navigational and drainage infrastructure is prominent, featuring the Grant Line Canal, the Fabian and Bell Canal, and several man-made channels like Sugar Cut and Paradise Cut.

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Map Details

Date Portrayed2021
Date Published2021
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24000
Physical Dimensions24 x 29 inches

Editions of this 2021 Union Island Map

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

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain