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DESCRIPTION:

Latitude 45°27'31.0",   Longitude 123°09'21.3"   NAD83

Washington County, Oregon, Hydrologic Unit 170900100203

Drainage area: 43.5 square miles

Datum of gage: 176.0 feet above   NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	2020-08-06	2025-08-28
Daily Data
Temperature, water, degrees Celsius	2020-08-06	2025-08-28	5481
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2020-08-07	2025-08-27	5471
Dissolved oxygen, water, unfiltered, milligrams per liter	2020-08-06	2025-08-28	5477
pH, water, unfiltered, field, standard units	2020-08-06	2025-08-28	5471
Dissolved organic matter fluorescence (fDOM), water, in situ, concentration estimated from reference material, micrograms per liter as quinine sulfate equivalents (QSE)	2022-12-17	2025-08-27	2703
Chlorophyll relative fluorescence (fChl), water, in situ, relative fluorescence units (RFU)	2024-05-22	2025-08-27	1356
Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll	2022-12-17	2024-05-22	1543
Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin	2022-12-17	2024-05-22	1543
Phycocyanin relative fluorescence (fPC), water, in situ, relative fluorescence units (RFU)	2024-05-22	2025-08-27	1356
Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)	2020-08-07	2025-08-27	5262
Daily Statistics
Temperature, water, degrees Celsius	2020-08-07	2025-07-08	1770
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2020-08-07	2025-07-08	1769
Dissolved oxygen, water, unfiltered, milligrams per liter	2020-08-07	2025-07-08	1770
Monthly Statistics
Temperature, water, degrees Celsius	2020-08	2025-07
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2020-08	2025-07
Dissolved oxygen, water, unfiltered, milligrams per liter	2020-08	2025-07
Annual Statistics
Temperature, water, degrees Celsius	2020	2025
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2020	2025
Dissolved oxygen, water, unfiltered, milligrams per liter	2020	2025
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	2020-09-02	2021-10-04	14
Water-Year Summary	2020	2024	5
Revisions	Loading...

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