Whakaotihia te rerenga e whai ake nei:
1971 San Fernando earthquake, te Tari o California o Water Resources Division o Safety o Dam i whakahaua he rangahau pumau o nga waipuke waipuke katoa i California, tae atu ki nga waipuke o Chatsworth Reservoir. I whakatauhia e te tātari kia tino hanga anōtia ngā taiepa o Chatsworth kia haumaru ai i te wā o tētahi ruu nui. I te tau 1972 ka whakakorehia te puna wai, a ka tangohia atu i te mahi. Kaore he mahere mo te whakahou i te Chatsworth Reservoir kua whakaturia.