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DESCRIPTION:

Latitude 33°45'04",   Longitude 117°54'27"   NAD27

Orange County, California, Hydrologic Unit 18070203

Drainage area: 1,700 square miles

Datum of gage: 66.18 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1988-10-01	2025-12-30
Daily Data
Temperature, water, degrees Celsius	1968-12-20	1987-03-09	329
Discharge, cubic feet per second	1923-02-01	2025-12-29	37223
Suspended sediment concentration, milligrams per liter	1967-10-01	1988-10-06	6186
Suspended sediment discharge, short tons per day	1967-10-01	1988-10-04	6451
Daily Statistics
Discharge, cubic feet per second	1923-02-01	2025-11-19	37183
Suspended sediment concentration, milligrams per liter	1967-10-01	1988-10-06	6186
Suspended sediment discharge, short tons per day	1967-10-01	1988-10-04	6451
Monthly Statistics
Discharge, cubic feet per second	1923-02	2025-11
Suspended sediment concentration, milligrams per liter	1967-10	1988-10
Suspended sediment discharge, short tons per day	1967-10	1988-10
Annual Statistics
Discharge, cubic feet per second	1923	2026
Suspended sediment concentration, milligrams per liter	1968	1989
Suspended sediment discharge, short tons per day	1968	1989
Peak streamflow	1923-01-31	2025-02-13	102
Field measurements	1988-11-25	2026-01-21	289
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	1967-11-19	2003-05-06	254
Water-Year Summary	2005	2025	21
Revisions	Loading...

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