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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 Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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 -- 66 sites found


Hydrologic unit = 18010211
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 Humboldt County, California
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 11529800 WILLOW C NR WILLOW C CA 1977-09-02 2015-08-26 2
USGS 11530000 TRINITY R A HOOPA CA 1907-01-05 2017-09-20 599
USGS 11530020 SUPPLY C A HOOPA CA 1981-11-03 1984-09-05 122
USGS 405600123370001 007N005E29R001H 2010-11-18 2020-11-16 6
USGS 410001123442301 SUPPLY C NR HOOPA CA 1981-12-05 1985-05-14 38
USGS 410513123422801 SOCTISH C A HOOPA CA 1981-12-05 1985-03-26 89
USGS 410524123420101 MILL C A HOOPA 1981-12-23 1985-03-26 65
USGS 410637123410601 008N004E02BS01H 1994-09-19 1996-05-17 44
USGS 410637123410602 008N004E02BS02H 1994-09-20 1994-09-20 1
USGS 410637123410603 008N004E02BS03H 1994-09-20 1995-03-14 2
USGS 410637123410604 008N004E02BS04H 1994-09-20 1994-09-20 1
USGS 410637123410605 008N004E02BS05H 1994-09-21 1995-03-14 3
USGS 410637123410606 008N004E02BS06H 1995-03-14 1995-03-14 2
USGS 410637123410607 008N004E02BS07H 1995-03-14 1996-03-13 2
USGS 410637123410608 008N004E02BS08H 1995-03-15 1995-03-15 1
USGS 410637123410609 008N004E02BS09H 1995-03-15 1995-03-15 1
USGS 410637123410610 008N004E02BS10H 1995-03-15 1995-03-15 1
USGS 410637123410611 008N004E02BS11H 1995-03-15 1995-03-15 1
USGS 410637123410612 008N004E02BS12H 1995-03-15 1995-03-15 1
USGS 410637123410613 008N004E02BS13H 1995-03-15 1995-03-15 1
USGS 410637123410614 008N004E02BS14H 1996-03-13 1996-03-13 1
USGS 410637123410615 008N004E02BS15H 1996-03-13 1996-03-13 1
USGS 410637123410616 008N004E02BS16H 1996-03-13 1996-03-13 1
USGS 410918123344001 MILL C NR HOOPA CA 1981-12-09 1984-03-22 52
  group icon Trinity County, California
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 11523700 COFFEE C NR TRINITY CENTER CA 2015-08-24 2015-08-24 1
USGS 11525500 TRINITY R A LEWISTON CA 1956-10-04 2006-07-24 363
USGS 11525530 RUSH C NR LEWISTON CA 2005-11-07 2006-05-20 69
USGS 11525535 TRINITY R BL RUSH C NR LEWISTON CA 2004-05-13 2004-06-08 46
USGS 11525540 TRINITY R AB GRASS VALLEY C NR LEWISTON CA 2006-05-04 2006-07-24 85
USGS 11525550 GRASS VALLEY C NR FRENCH GULCH CA 1984-10-04 1989-04-06 102
USGS 11525580 LITTLE GRASS VALLEY C NR LEWISTON CA 1984-10-04 2000-08-10 435
USGS 11525600 GRASS VALLEY C A FAWN LODGE NR LEWISTON CA 1975-12-04 2005-05-27 644
USGS 11525630 GRASS VALLEY C NR LEWISTON CA 2003-03-06 2006-05-31 105
USGS 11525655 TRINITY R BL LIMEKILN GULCH NR DOUGLAS CITY CA 1981-04-29 2006-07-24 392
USGS 11525670 INDIAN C NR DOUGLAS CITY CA 2005-12-01 2006-04-19 69
USGS 11525800 WEAVER C NR DOUGLAS CITY CA 1962-10-09 1969-08-06 247
USGS 11525854 TRINITY R A DOUGLAS CITY CA 2004-05-13 2006-07-24 155
USGS 11526500 NF TRINITY R A HELENA CA 1962-10-19 1970-07-30 492
USGS 11527000 TRINITY R NR BURNT RANCH CA 1960-10-13 1968-08-21 79
USGS 11527400 NEW R A DENNY CA 1977-09-09 1977-09-09 1
USGS 403900122470001 032N008W05P001M 2010-11-17 2010-11-17 2
USGS 404200122510001 033N009W23A001M 2010-11-18 2015-10-08 3
USGS 404400122470001 033N008W05A001M 2010-12-13 2010-12-13 2
USGS 404400123010001 033N010W08H001M 2010-11-16 2010-11-16 2
USGS 404400123150001 033N012W05F001M 2010-11-04 2010-11-04 2
USGS 404427123125701 TRINITY R A BIG FLAT DAY USE AREA NR BIG BAR CA 2002-08-27 2002-08-27 2
USGS 404500123050001 034N011W35D001M 2010-11-03 2010-11-03 2
USGS 404600123200001 005N007E25G001H 2010-11-04 2010-11-04 2
USGS 404656123204501 TRINITY R A HAYDEN FLAT NR BIG BAR CA 2002-08-27 2002-08-27 2
USGS 404700122460001 034N008W21J001M 2010-12-14 2010-12-14 2
USGS 404700123200001 005N007E24P001M 2010-12-14 2010-12-14 2
USGS 404723123032001 CANYON C BL CONRAD GULCH NR JUNCTION CITY CA 2002-08-27 2002-08-27 2
USGS 404940123072901 EF OF NF TRINITY R .53 MI AB BARNEY GULCH 2002-08-27 2002-08-27 2
USGS 405100122450001 035N008W30QS01M 2010-11-17 2013-10-30 4
USGS 405200123320001 006N006E19G001H 2010-11-01 2010-11-01 2
USGS 405300122450001 035N008W15LS01M 2010-11-03 2010-11-03 1
USGS 405400122470001 035N008W04N001M 2010-11-16 2010-11-16 2
USGS 405557123233401 NEW R A DENNY CAMPGROUND NR DENNY CA 2002-08-26 2002-08-26 2
USGS 410031122370901 EF TRINITY R BL COUNTY RD 106 NR TRINITY CENTER CA 2001-06-05 2002-08-12 3
USGS 410259122355201 EF TRINITY R 1.2 MI BL DEVILS C NR TRINITY CENTER 2001-06-05 2002-08-12 3
USGS 410500122420001 037N007W05P001M 2010-12-09 2010-12-09 2
USGS 410731122321801 EF TRINITY R BL ALTOONA MINE DR NR TRINITY CENTER 2001-06-05 2002-08-13 3
USGS 410734122321601 ALTOONA MINE DR A EF TRINITY R NR TRINITY CENTER 2001-06-05 2002-08-13 3
USGS 410740122315401 CROW C AB CONFLUENCE OF EF TRINITY R NR TRINITY CE 2001-06-05 2002-08-13 3
USGS 410916122273801 TAMARACK C A EF TRINITY R NR MT SHASTA CA 2001-06-05 2002-08-13 3
USGS 410928122271201 EF TRINITY R A HORSE HEAVEN MDW NR MT SHASTA CA 2001-06-05 2002-08-13 3