Zanja Madre (Mother Ditch)

THROUGH THIS SPOT FLOWED THE ZANJA MADRE
(MOTHER DITCH) WHICH CHANNELED THE WATERS
OF THE LOS ANGELES RIVER TO THE CITIZENS
OF LOS ANGELES FOR . 123 YEARS, 1781-1904
PRESENTED BY
THE DEPARTMENT OF WATER AND POWER
CITY OF LOS ANGELES
FEBRUARY 6 1952

Submitted by @JonathanBourne