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DESCRIPTION:

Latitude 45°24'13",   Longitude 122°45'13"   NAD27

Washington County, Oregon, Hydrologic Unit 17090010

Drainage area: 31.5 square miles

Datum of gage: 115.78 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	1993-10-01	2026-01-22
Daily Data
Temperature, water, degrees Celsius	1993-10-18	2026-01-21	27651
Discharge, cubic feet per second	1993-10-01	2026-01-21	10102
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	1993-10-18	2026-01-21	27416
Dissolved oxygen, water, unfiltered, milligrams per liter	2003-01-11	2026-01-21	24441
pH, water, unfiltered, field, standard units	2003-01-11	2026-01-21	24585
Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)	2003-01-11	2026-01-21	23468
Daily Statistics
Temperature, water, degrees Celsius	1993-10-18	2025-11-16	9144
Discharge, cubic feet per second	1993-10-01	2024-12-15	9700
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	1993-10-18	2025-10-15	9021
Dissolved oxygen, water, unfiltered, milligrams per liter	2003-01-11	2025-11-16	8075
Monthly Statistics
Temperature, water, degrees Celsius	1993-10	2025-11
Discharge, cubic feet per second	1993-10	2024-12
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	1993-10	2025-10
Dissolved oxygen, water, unfiltered, milligrams per liter	2003-01	2025-11
Annual Statistics
Temperature, water, degrees Celsius	1994	2026
Discharge, cubic feet per second	1994	2025
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	1994	2026
Dissolved oxygen, water, unfiltered, milligrams per liter	2003	2026
Peak streamflow	1994-02-24	2023-12-06	27
Field measurements	1992-09-07	2026-01-15	311
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	1991-01-07	2024-02-14	1703
Water-Year Summary	2006	2025	20
Revisions	Loading...

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