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1987 Map of Tinemaha Reservoir

Name: 1987 Topographic Map of Tinemaha Reservoir
Creator: U.S. Geological Survey
Published: 1987
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1987

About this map

Tinemaha Reservoir dominates the center of this Inyo County landscape, where the waters of the Owens River are managed through a complex system of levees and an Outlet Tower. The western margin is defined by the Poverty Hills, while the eastern reaches climb toward Harkless Flat within the Inyo National Forest. This 1980s survey captures a transition between heavy resource extraction and water management, evidenced by the presence of the Montezuma Mine and the New Era Mine alongside numerous prospects.

Traces of former transport networks are visible in the Old Railroad Grade that parallels the river, a relic of the region's earlier industrial connectivity. Natural hydrology remains prominent through features like Big Seeley Spring, Little Seeley Spring, and Sangers Slough, which interact with the significant lava fields found south of the reservoir. This map documents the intersection of high-desert geology and the massive infrastructure projects of the City of Los Angeles.