LOCATION: 455.0 feet north of Spring Street, 4.0 miles east of Signal Hill, Long Beach.
REGULATION: Partially regulated by Cogswell, San Gabriel, Morris, Santa Fe, Big Dalton, San Dimas, Puddingstone Diversion, Puddingstone, Live Oak, Thompson Creek, and Whittier Narrows Dams, several debris basins, MWD outlet, and several spreading grounds.
CHANNEL: Concrete, trapezoidal section with low flow channel.
CONTROL: Channel forms control.
LENGTH OF RECORD: At Station F42-R, February 6, 1928 to May 26, 1964; at Station F42B-R, November 16, 1964 to date.
REMARKS: High flows into Whittier Narrows Reservoir are partialy diverted to the Rio Hondo.