Les Storrs Santa Monica Portrait of a City Yesterday and Today, Santa Monica Bank: Santa Monica, CA, 1974, 67 pp., 1909
"Unfortunately, this [the outfall, which was near Pier Avenue] was destroyed by a storm [1905?], and many problems ensued, so that the outfall ultimately was located under the present site of the Municipal Pier, at the foot of Colorado Avenue. This was the case from 1909 until the city of Santa Monica joined the city of Los Angeles in funding the Hyperion plant, now in use [1974].