Visual Materials
The winter snows of the Sierras were the entire reason for the Big Creek Project
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Although construction work continued through the depths of the winter of 1912-1913. the Big Creek Project seemed very isolated from the outside world
Visual Materials
Although construction work continued through the depths of the winter of 1912-1913, the Big Creek Project seemed very isolated from the outside world. Getting the U.S. Mail from the railhead at Camp #2 to the most distant camps was a necessary, if difficult, task.
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John Samuel Eastwood (1857-1924) was involved in civil engineering projects in the San Jaoquin Valley and the High Sierras
Visual Materials
John Samuel Eastwood (1857-1924) was involved in civil engineering projects in the San Jaoquin Valley and the High Sierras for almost all of his career. In addition to the Big Creek Project, the invention of the multiple-arch dam is Eastwood's most enduring legacy.
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In December 1985. the Balsam Meadow Project reached its halfway mark with the "holing through" of the Tailrace Tunnel
Visual Materials
In December 1985, the Balsam Meadow Project reached its halfway mark with the "holing through" of the Tailrace Tunnel. Here, surrounded by solid granite 400 feet below the snow-covered Sierras, Edison's Balsam Meadow Project Manager Don Brundage (right), congratualtes Dillingham-Atkenson Project Manager Richard L. Kunz on completion of the final tunneling work for the project.
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An Edison snow surveyor prepares to force a hollow tube into the snow
Visual Materials
An Edison snow surveyor prepares to force a hollow tube into the snow. Measurements made from the resulting core sample will reveal the water content of the snow. When coupled with the depth of the snow pack, hydrographers can estimate the amount of runoff water that will be available in the upcoming spring and summer. from this data, Edison planners can estimate how much hydroelectric generation will be available for the system in the coming months.
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Big Creek, Stevenson Creek Test Dam - Close
Visual Materials
Big Creek, Stevenson Creek Test Dam - Close-up view of heavy rock cut in road construction for Project 3
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This map shows the powerhouses and main reservoirs on the Big Creek Project
Visual Materials
This map shows the powerhouses and main reservoirs on the Big Creek Project, as of 1986. Not shown are the tunnels and conduits that transfer water between reservoirs.
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