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1984 Map of Costello Island

Name: 1984 Topographic Map of Costello Island
Creator: U.S. Geological Survey
Published: 1984
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1984

About this map

Possum Kingdom Lake dominates the landscape of this North Texas region, where the Brazos River winds through the borderlands of Young and Palo Pinto counties. The survey depicts the complex shoreline of the reservoir, including prominent features like Costello Island and Carter Island, alongside intricate water systems such as Brushy Slough and Chimmey Slough. The elevation changes are marked by numerous high points including Mc Adams Peak, Gordon Mountain, and Storms Mountain, which define the rugged horizon surrounding the water.

Local drainage patterns are well-documented through named tributaries like Rock Creek, Loring Creek, and Ainsworth Creek. The map provides specific data on the lake's water levels, noting a normal pool elevation of 995 feet. This 1984 provisional edition captures the geography of the Brazos at iconic bends such as Wild, Ming, and Waco, offering a clear view of the area's transition from river valley to significant reservoir.