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DESCRIPTION:

Latitude 38°39'30",   Longitude 122°49'42"   NAD27

Sonoma County, California, Hydrologic Unit 18010110

Drainage area: 684 square miles

Datum of gage: 143.70 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	2009-07-01	2025-12-26
Daily Data
Temperature, water, degrees Celsius	2009-07-22	2025-12-26	13989
Discharge, cubic feet per second	2009-07-01	2025-12-25	5358
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2009-07-22	2025-12-26	9789
Dissolved oxygen, water, unfiltered, milligrams per liter	2009-07-22	2025-12-26	9518
pH, water, unfiltered, field, standard units	2009-07-22	2025-12-26	9496
Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)	2009-07-22	2017-10-31	3819
Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)	2018-04-01	2025-11-19	5019
Daily Statistics
Temperature, water, degrees Celsius	2016-10-01	2025-06-10	3064
Discharge, cubic feet per second	2009-07-01	2025-11-19	5322
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2016-10-01	2024-10-31	1782
Dissolved oxygen, water, unfiltered, milligrams per liter	2016-10-01	2024-10-31	1677
Monthly Statistics
Temperature, water, degrees Celsius	2016-10	2025-06
Discharge, cubic feet per second	2009-07	2025-11
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2016-10	2024-10
Dissolved oxygen, water, unfiltered, milligrams per liter	2016-10	2024-10
Annual Statistics
Temperature, water, degrees Celsius	2017	2025
Discharge, cubic feet per second	2009	2026
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2017	2025
Dissolved oxygen, water, unfiltered, milligrams per liter	2017	2025
Peak streamflow	2009-07-25	2025-02-05	11
Field measurements	2009-06-23	2025-12-22	202
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	2015-08-13	2016-10-28	5
Water-Year Summary	2009	2025	17
Revisions	Loading...

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