USGS Home
Contact USGS
Search USGS

National Water Information System: Web Interface

USGS Water Resources   

Data Category:
Home Current Conditions Site Information Mapper Surface Water Groundwater Water Quality Water Use Revisions Geographic Area:
United States Alabama Alaska American Samoa Arizona Arkansas British Columbia California Canton and Enderbury Islands Colorado Connecticut Delaware Dist. of Columbia Florida Georgia Guam Hawaii Idaho Illinois Indiana Iowa Johnston Atoll Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Midway Islands Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Northern Mariana Islands Ohio Oklahoma Oregon Pennsylvania Puerto Rico Rhode Island Ryukyu Islands, Southern South Carolina South Dakota Swan Islands Tennessee Texas Trust Territories, Pacific Is U.S.Misc Caribbean Islands U.S.Misc Pacific Islands Utah Vermont Virgin Islands Virginia Wake Island Washington West Virginia Wisconsin Wyoming

Page Loading - Please Wait...

This page will be decommissioned in early 2026. Please find the modernized pages in WDFN that suit you best. Learn more about our modernization plans and timeline.

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	2026-01-19
Daily Data
Temperature, water, degrees Celsius	2002-05-01	2026-01-19	25514
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	2026-01-18	23966
Dissolved oxygen, water, unfiltered, milligrams per liter	2002-05-01	2026-01-19	25429
pH, water, unfiltered, field, standard units	2002-05-01	2026-01-19	25401
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	2026-01-18	18968
Daily Statistics
Temperature, water, degrees Celsius	2002-05-01	2025-11-17	8446
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	2025-11-17	7927
Dissolved oxygen, water, unfiltered, milligrams per liter	2002-05-01	2025-11-17	8414
Monthly Statistics
Temperature, water, degrees Celsius	2002-05	2025-11
Discharge, cubic feet per second	1975-01	2006-10
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2002-05	2025-11
Dissolved oxygen, water, unfiltered, milligrams per liter	2002-05	2025-11
Annual Statistics
Temperature, water, degrees Celsius	2002	2026
Discharge, cubic feet per second	1975	2007
Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius	2002	2026
Dissolved oxygen, water, unfiltered, milligrams per liter	2002	2026
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	2025	13
Revisions	Loading...

OPERATION:

Record for this site is maintained by the USGS Oregon Water Science Center

Email questions about this site to Oregon Water Science Center Water-Data Inquiries