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Water Quality Samples for USA
Grouped by County

! Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024
with a full decommission expected 6 months later. Learn more about the upcoming change and where to find the new samples data in our blog.
Some complex retrievals may take a few minutes.

Site Selection Results -- 31 sites found


Hydrologic unit = 17020007
Minimum number of samples = 1

Save file of selected sites to local disk for future upload

Data for individual sites can be obtained by selecting the site number below

  group icon Okanogan County, Washington
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 12442310 CHOPAKA LAKE NEAR NIGHTHAWK, WA 1975-04-29 1975-09-23 12
USGS 12442400 PALMER LAKE NEAR NIGHTHAWK, WA 1975-04-29 1975-09-23 16
USGS 12442500 SIMILKAMEEN RIVER NEAR NIGHTHAWK, WA 1947-12-13 2019-10-09 43
USGS 12443500 SIMILKAMEEN RIVER NEAR OROVILLE, WA 1981-06-16 1981-06-16 1
USGS 12443600 SIMILKAMEEN RIVER AT OROVILLE, WA 1974-10-22 1980-06-18 67
USGS 485607119264201 40N/27E-28L02 1959-10-20 1960-05-17 2
USGS 485636119392100 SIMILKAMEEN R-1 1993-09-21 1993-09-21 1
USGS 485702119391100 SIMILKAMEEN R-2 1993-09-21 1993-09-21 1
USGS 485710119290100 SIMILKAMEEN R-23 1993-09-15 1993-09-15 1
USGS 485713119290400 SIMILKAMEEN R-22 1993-09-15 1993-09-15 1
USGS 485717119384900 SIMILKAMEEN R-3 1993-09-21 1993-09-21 1
USGS 485732119292900 SIMILKAMEEN R-21 1993-09-15 1993-09-15 1
USGS 485747119382900 SIMILKAMEEN R-4 1993-09-21 1993-09-21 1
USGS 485802119383200 SIMILKAMEEN R-4.5 2020-09-22 2023-11-29 13
USGS 485803119300500 SIMILKAMEEN R-20 1993-09-16 1993-09-16 1
USGS 485816119301400 SIMILKAMEEN R-19 1993-09-16 1993-09-16 1
USGS 485827119381000 SIMILKAMEEN R-5 1993-09-22 1993-09-22 1
USGS 485844119425501 40N/25E-08J02 1979-06-26 1979-06-26 1
USGS 485845119314400 SIMILKAMEEN R-16 1993-09-17 1993-09-17 1
USGS 485848119323200 SIMILKAMEEN R-15 1993-09-17 1993-09-17 1
USGS 485849119324300 SIMILKAMEEN R-14 1993-09-23 1993-09-23 1
USGS 485850119303000 SIMILKAMEEN R-18 1993-09-16 1993-09-16 1
USGS 485900119371000 SIMILKAMEEN R-6 1993-09-22 1993-09-22 1
USGS 485903119304600 SIMILKAMEEN R-17 1993-09-16 1993-09-16 1
USGS 485904119333400 SIMILKAMEEN R-13 1993-09-23 1993-09-23 1
USGS 485908119361600 SIMILKAMEEN R-8 1993-09-22 1993-09-22 1
USGS 485910119335300 SIMILKAMEEN R-12 1993-09-23 1993-09-23 1
USGS 485910119363900 SIMILKAMEEN R-7 1993-09-22 1993-09-22 1
USGS 485916119355800 SIMILKAMEEN R-9 1993-09-22 1993-09-22 1
USGS 485917119343500 SIMILKAMEEN R-11 1993-09-23 1993-09-23 1
USGS 485918119352600 SIMILKAMEEN R-10 1993-09-23 1993-09-23 1