LOCATION: 462.0 feet below San Gabriel River Parkway, 1.4 miles northeast of Pico Rivera.
REGULATION: Partially regulated by Santa Fe, Big Dalton, Puddingstone Diversion, Puddingstone, and Thompson Creek Dams. Flows may include imported water from several Metropolitan Water District outlets. Water is at times diverted to the Zone One ditch, upstream of Whittier Narrows Dam.
CHANNEL: Rip-rap slopes with sand bottom trapezoidal section.
CONTROL: Concrete stabilizer.
LENGTH OF RECORD: At Station F263-R, February 4, 1937 to March 6, 1952; at Station F263B-R, March 6, 1952 to August 9, 1968; at Station F263C-R, August 9, 1968 to date.