Mezue ahịrịokwu na-esonụ: Dị ka onye injinia steeti California, Hall rụrụ ọrụ n'usoro mmiri na-achịkwa idei mmiri maka ndagwurugwu Sacramento. Ọmụmụ ihe Hall banyere nkà mmụta mmiri nke California were site na 1878 ruo 1883. N'oge ahụ, ndị ọrụ ya wụnyere usoro dị ukwuu e ji amata mmiri na-asọ n'akụkụ osimiri ụfọdụ dị na California. O nyekwara aka n'imepụta ọrụ iji nyere San Francisco aka inweta mmiri zuru ezu site na mmiri ọdịda anyanwụ nke Osimiri Tuolumne. Ịgbaso
ala ọma jijiji nke 1906, San Francisco nwere ike ijide ikike na mmiri, na ọ idei mmiri Hetch Hetchy Valley.