Whakaotihia te rerenga e whai ake nei: I te mea ko ia te Kaitohutohu o te Kawanatanga o California, i mahi a Hall i runga i te punaha tuku wai me te whakahaere waipuke mo te Raorao o Sacramento. Ko te ako a Hall mo te wai o California i roa mai i te 1878 ki te 1883. I taua wā, ka whakaurua e tana kaimahi tētahi pūnaha ine rerenga nui i te taha o ētahi o ngā awa o California. I whai wāhi hoki ia ki te hoahoa kaupapa hei awhina i a San Francisco ki te whiwhi i nga wai e tika ana mai i te awa o te uru o te awa o Tuolumne. Whai muri i te
I te ruu o te tau 1906, ka taea e San Francisco te whakarite i ngā tika ki te wai, ā, ka waipuke i te raorao o Hetch Hetchy.