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1978 Map of Isleton

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

USGS Topo · Published 1993

About this map

Isleton and the riverfront communities of Walnut Grove and Locke anchor this map of the California Delta, where the Sacramento River and Mokelumne River diverge into a complex web of sloughs and island tracts. The landscape is a product of intensive hydrological engineering, featuring the Delta Cross Channel and numerous pumping stations that manage the low-lying terrain of Grand Island, Andrus Island, and Tyler Island. The presence of the Rio Vista Gas Field and West Thornton-Walnut Grove Gas Field highlights the region's importance beyond agriculture, showing a reliance on natural resource extraction.

Waterborne transport and historical landings like Howard Landing and Walker Landing underscore the river-centric development of these towns. Navigation through Steamboat Slough and Georgiana Slough defines the movement across the quadrangle, which also includes the Hogback Island Recreation Facility and a Landing Strip, reflecting both the industrial and recreational utility of the Delta’s reclaimed lands during the late 20th century.