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1968 Map of Portland

Name: 1968 Topographic Map of Portland
Creator: U.S. Geological Survey
Published: 1971
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1971

About this map

Portland sits at the northern edge of this coastal landscape, looking out over the expansive waters where Nueces Bay and Corpus Christi Bay meet. The 1968 survey reveals a heavy industrial and maritime influence, with a network of Gas Wells and Oil Wells peppered across the shallow bay waters and the surrounding flats. Navigation is a central theme of the map, anchored by the long reach of the Corpus Christi Channel and its associated Light stations and Range Lights.

The coastal geography is defined by a series of prominent sub-surface features, including Alta Vista Reef, Indian Reef, and Donnel Reef. On land, the Causeway connects the mainland through Indian Point, passing by Sunset Lake. This document captures the mid-century development of the San Patricio and Nueces county line, reflecting the importance of petroleum extraction and shipping infrastructure to the local economy during this era.