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1978 Map of Liberty Island

Name: 1978 Topographic Map of Liberty Island
Creator: U.S. Geological Survey
Published: 1993
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1993

About this map

Liberty Island and the surrounding marshlands of the California Delta are defined here by a complex network of man-made channels and natural waterways. The Sacramento River Deep Water Ship Channel dominates the eastern landscape, running parallel to the Little Holland Tract Drain and the Sacramento River. This 1970s landscape reflects the intersection of intensive agriculture and resource extraction, anchored by the Maine Prairie Gas Field and scattered infrastructure like storage bins and numerous pumping stations required to manage the low-lying tracts.

Water management is central to life in this region, with the Cache Slough and Shag Slough weaving through the Moore Tract and Hastings Tract. Small outposts like Liberty Farms and Five Points provide a glimpse into the rural community centers that supported the local workforce. From the gas wells in the north to the southern reaches of Ryer Island, the map documents a precisely engineered terrain where every slough and cut, such as Hastings Cut and Wright Cut, serves a specific drainage or navigational purpose.