William Hammond Hall was born in
Hagerstown, Maryland, on February 12, 1846. After serving with the U.S. army engineers in the
Civil War, Hall was assigned in the latter part of the 1860s to surveying the Western regions of the United States and preparing topographical maps. During this same time, the citizens of
San Francisco were considering building a grand park for their new and growing city. The city designated a tract of stretching out to the ocean that was known as the "outside land." In 1870 the Park Commission solicited bids for a topographical survey which was awarded to Hall. After the successful completion of that task, he was appointed
Golden Gate Park's first superintendent in 1871. As California's State Engineer, Hall worked on a comprehensive water supply and flood control system for the Sacramento Valley. Hall's study of California's
hydrology lasted from 1878 through 1883. In that time, his staff installed an extensive flow gauging system along some of California rivers. He was also instrumental in designing projects to help San Francisco acquire adequate supplies of water from the western watershed of the Tuolumne River. Following the
earthquake of 1906, San Francisco was able to secure the rights to the water, and it flooded
Hetch Hetchy Valley. ==Personal life==