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STREAM GAGING STATION INFORMATION
| LOS ANGELES RIVER |
| above Arroyo Seco |
| STATION NO. F57C-R |
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| RECORDER: Continuous water stage. |
| METHOD OF MEASUREMENT: Wading |
| DRAINAGE AREA: 511.0 square miles. |
| LOCATION: 800 feet above the confluence of the Arroyo Seco with the Los Angeles River, Los Angeles. |
| REGULATION: Partially regulated by Sepulveda, Pacoima, Big Tujunga, and Hansen Dams; and by several spreading grounds, reservoirs, and debris basins. |
| DIVERSION: None. |
| CHANNEL: Concrete, rectangular in section, with a trapezoidal low-flow channel. |
| CONTROL: Channel forms control. |
| LENGTH OF RECORD: At Station F57-R, December 5, 1929 to May 26, 1938; at Station F57B-R, April 5, 1939 to December 8, 1939; at Station F57C-R, December 8, 1939 to date. |
| REMARKS: Subject to diversions from Big Tujunga Creek, and other diversions for domestic and irrigation uses. |
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DRAINAGE AREA
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CROSS-SECTION
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