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DESCRIPTION:

Latitude 45°28'10",   Longitude 123°11'56"   NAD27

Washington County, Oregon, Hydrologic Unit 17090010

Drainage area: 38.8 square miles

Datum of gage: 187.48 feet above   NGVD29.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1986-10-01	2025-09-11
Daily Data
Temperature, water, degrees Celsius	2002-05-01	2025-09-11	25147
Discharge, cubic feet per second	1975-01-01	2006-10-01	11597
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2002-05-01	2025-09-10	23599
Dissolved oxygen, water, unfiltered, milligrams per liter	2002-05-01	2025-09-11	25060
pH, water, unfiltered, field, standard units	2002-05-01	2025-09-11	25034
Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)	2008-05-16	2025-09-10	18603
Daily Statistics
Temperature, water, degrees Celsius	2002-05-01	2025-01-23	8151
Discharge, cubic feet per second	1975-01-01	2006-10-01	11597
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2002-05-01	2025-01-23	7629
Dissolved oxygen, water, unfiltered, milligrams per liter	2002-05-01	2025-01-23	8116
Monthly Statistics
Temperature, water, degrees Celsius	2002-05	2025-01
Discharge, cubic feet per second	1975-01	2006-10
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2002-05	2025-01
Dissolved oxygen, water, unfiltered, milligrams per liter	2002-05	2025-01
Annual Statistics
Temperature, water, degrees Celsius	2002	2025
Discharge, cubic feet per second	1975	2007
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2002	2025
Dissolved oxygen, water, unfiltered, milligrams per liter	2002	2025
Peak streamflow	1975-03-19	2006-01-14	32
Field measurements	1983-10-05	2006-11-01	152
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	2000-11-07	2022-12-12	659
Water-Year Summary	2006	2024	12
Revisions	Loading...

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