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DESCRIPTION:

Latitude 45°33'22.73",   Longitude 122°52'25.39"   NAD83

Washington County, Oregon, Hydrologic Unit 170900100402

Datum of gage: 169.0 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	2023-07-18	2025-08-28
Daily Data
Temperature, water, degrees Celsius	2024-08-30	2025-08-27	569
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2024-08-30	2025-08-24	768
Dissolved oxygen, water, unfiltered, milligrams per liter	2024-08-30	2025-08-27	669
pH, water, unfiltered, field, standard units	2024-08-30	2025-08-27	487
Chlorophyll relative fluorescence (fChl), water, in situ, relative fluorescence units (RFU)	2024-08-30	2025-08-27	746
Phycocyanin relative fluorescence (fPC), water, in situ, relative fluorescence units (RFU)	2024-08-30	2025-08-27	725
Lake or reservoir water surface elevation above NAVD 1988, feet	2023-07-19	2025-08-27	766
Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)	2024-08-30	2025-08-27	617
Nitrate, water, in situ, milligrams per liter as nitrogen	2024-09-05	2025-08-27	686
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