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1978 Map of Warm Springs Dam

Name: 1978 Topographic Map of Warm Springs Dam
Creator: U.S. Geological Survey
Published: 1985
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1985

About this map

Warm Springs Dam stands as the central focal point of this late-1970s landscape, illustrating a massive hydrological transformation of the Dry Creek valley. Blue hatching indicates the projected extent of Lake Sonoma at its full elevation, showing exactly how the rising waters would eventually submerge the historic Skaggs Springs (Hot) and surrounding riparian zones. High-elevation terrain remains untouched by the project, including the prominent Pritchett Peaks and the botanical area known as The Cedars to the southwest.

The map preserves the layout of the land just prior to inundation, marking isolated features like a Mine and a Gaging Station alongside the winding Rockpile Road. Notable landmarks such as Bummer Peak and Eagle Rock overlook a complex network of tributaries, including Warm Springs Creek and Little Warm Springs Creek, that define the rugged drainage basin of the Sonoma backcountry during this period of significant engineering change.