
Two men standing near a water ditch at the bank of Los Angeles River, north side of Griffith Park.
Photograph of a man standing near a water ditch at the bank of Los Angeles River, north side of Griffith Park, ca.1900.
“The River and its rich plant and animal habitat provided a livelihood for the Gabrielino Indians, one of the largest group of Indians in North America. Although it is unclear today what this group called themselves, they are referred to as the Tongva. Over 1000 years ago, the Tongva established a settlement on the banks of the River near where Los Angeles City Hall stands today.” (SOURCE)
Photograph of hundreds of pigeons bathing in the Los Angeles River on a pigeon ranch just past the Riverside bridge at the junction of Verdugo Road and San Fernando Boulevard, ca.1900.
“Wednesday, August 2. ~ We set out from the valley in the morning and followed the same plain in the westerly direction. After traveling about a league and a half through a pass between low hills, we entered a very spacious valley, well grown with cottonwoods and alders, among which ran a beautiful river (yep, the LA River) from the north-northwest, and then doubling the point of a steep hill, it went on aftwards to the south. Toward the north-northeast there is another river bed (the Arroyo Seco) which forms a spacious water-course, but we found it dry. This bed unites with that of the river, giving a clear indication of great floods in the rainy season, for we saw that it had many trunks of trees on the banks. We halted not very far from the river, which we named Porciuncula (meaning “small portion of land”). Here we felt three consecutive earthquakes in the afternoon and night. We must have traveled about three leagues today. This plain where the river runs is very extensive. It has good land for planting all kinds of grain and seeds, and is the most suitable site of all that we have seen for a mission, for it has all the requisites for a large settlement.”
Photograph of a flooded Los Angeles River flowing under a Pacific Electric Railway bridge, 1916. Looking north from a wagon bridge on Anaheim Street in Wilmington, the water fills the foreground, stretching towards the bridge in the background, which crosses from left to right.
Photograph of the Los Angeles River in Griffith Park, ca.1920.

Thanks for such awesome pictures, and a nice description of the LA River. Note that the first written description was noted on August 2. I wonder where the water was coming from?
Thank you for this. I have lived in the Pacific Northwest since I left the valley in 1982. The river was already cemented in by the time I was born (long before), but my grandfather built a small house on 15125 Valleyheart Dr in 1940 when he moved his family to LA from South Dakota. I have photographs of my mother fishing on the river when she was about 15 or 16. That would have been about ‘48 or ‘49. Until now, I have not known about the reclamation project. Grampa would be so happy. His little house is still there…
Thanks for the description. I also assume that Portola Junior High and Crespi High School are named for the gentlemen in the story.