november 3, 2015 margaret hannaford, division manager ... · november 3, 2015 margaret hannaford,...
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Snow Surveys in the Tuolumne Basin
November 3, 2015 Margaret Hannaford, Division Manager
Hetch Hetchy Water and Power
Operated by the San Francisco Public Utilities Commission
Services of the San Francisco Public Utilities Commission
Hetch Hetchy Water & Power 85 years!
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Survey Route Map
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Then
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& Now! 12
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Aerial Markers
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Snow Sensors – as early as 1980
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Continued support of manual surveys
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ASO
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Hannaford Snow Survey Heritage
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Data we use – from in & outside the basin
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• Watershed • Walker • Stanislaus • Merced • Mono Lake
• Cooperator Measurers • US Forest Service • National Park Service • PG&E • So. Cal Edison
Thank You Snow Survey Cooperators!
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