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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	2024-04-24
Daily Data
Temperature, water, degrees Celsius	2002-05-01	2024-04-24	23638
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	2024-04-24	22087
Dissolved oxygen, water, unfiltered, milligrams per liter	2002-05-01	2024-04-24	23553
pH, water, unfiltered, field, standard units	2002-05-01	2024-04-24	23523
Dissolved organic matter fluorescence (fDOM), water, in situ, concentration estimated from reference material, micrograms per liter as quinine sulfate equivalents (QSE)	2021-04-25	2021-10-03	486
Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll	2021-04-25	2021-10-03	477
Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin	2021-04-25	2021-10-03	478
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	2024-04-24	17114
Daily Statistics
Temperature, water, degrees Celsius	2002-05-01	2024-03-14	7836
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	2023-12-06	7225
Dissolved oxygen, water, unfiltered, milligrams per liter	2002-05-01	2024-03-14	7805
Monthly Statistics
Temperature, water, degrees Celsius	2002-05	2024-03
Discharge, cubic feet per second	1975-01	2006-10
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2002-05	2023-12
Dissolved oxygen, water, unfiltered, milligrams per liter	2002-05	2024-03
Annual Statistics
Temperature, water, degrees Celsius	2002	2024
Discharge, cubic feet per second	1975	2007
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2002	2024
Dissolved oxygen, water, unfiltered, milligrams per liter	2002	2024
Peak streamflow	1975-03-19	2006-01-14	32
Field measurements	1983-10-05	2006-11-01	152
Field/Lab water-quality samples	2000-11-07	2022-12-12	659
Water-Year Summary	2006	2023	11
Revisions	Loading...

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