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Excerpt from Report of the San Francisco Public Utilities Commission, Fiscal Year 1945-1946: Water Department, Municipal Railway, Hetch Hetchy Water Supply, Power, Utilities Engineering Bureau, San Francisco Airport Department, Bureau of Light, Heat and Power The maximum month's demand in July, 1946, averaged million, gallons daily, as compared to the all time high of million gallons daily which occurred the previous year. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

When water from the Sierra Nevada reached the San Francisco Bay area in 1934, it was greeted by a national celebration after two decades of grueling construction. The Hetch Hetchy Project evolved from a long search for a reliable source of water for San Francisco that began after the 1906 Great Earthquake. Prior to the earthquake, San Francisco had burned to the ground repeatedly due to the lack of water to fight fires. Studies of 14 different sources led to the design of an engineering marvel that conveys water using gravity across California via a complex system of tunnels, reservoirs, pipelines, powerhouses, treatment plants, and dams. But before the Hetch Hetchy Project broke ground, controversy roiled over the project. Finally, the Raker Act was passed by Congress in 1913 and signed by Pres. Woodrow Wilson to permit the use of the rights-of-way for the project. Today, this system serves some of the highest-quality water in the nation to 2.4 million people.