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SF History Association Talk: Underground Waterways of San Francisco

11:58 PM PST on January 23, 2011

From Thinkwalks:

A San Francisco History Association monthly meeting, open to the public. Joel Pomerantz of Thinkwalks will give a presentation covering hidden creeks and a nontechnical explanation of aquifers, soil hydrology, and springs with new research about the central part they played in the siting and settling of San Francisco.

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