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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 Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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 -- 116 sites found


Hydrologic unit = 18070305
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 San Diego County, California
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 11013500 TIJUANA R NR NESTOR CA 1969-06-13 2001-07-20 39
USGS 323233117015201 019S001W06N002S 2015-07-13 2015-07-13 1
USGS 323236117025001 019S002W01N005S 1982-11-15 1983-03-15 2
USGS 323236117045801 019S002W03M013S 2015-07-29 2015-07-29 1
USGS 323242117062101 019S002W05K003S 2007-06-08 2007-06-08 1
USGS 323242117062102 019S002W05K004S 2005-10-19 2005-10-19 1
USGS 323242117062103 019S002W05K005S 2005-10-18 2005-10-18 1
USGS 323242117062104 019S002W05K006S 2005-10-17 2005-10-17 1
USGS 323242117062105 019S002W05K007S 2005-09-01 2005-09-01 1
USGS 323257117050401 019S002W04H007S 1978-12-07 1983-03-17 2
USGS 323302117055201 019S002W04E001S 2009-12-03 2015-07-17 2
USGS 323302117055202 019S002W04E002S 2009-12-03 2015-07-16 2
USGS 323302117062001 019S002W05G019S 2015-07-21 2015-07-21 1
USGS 323303117033202 019S002W02G002S 2015-07-24 2015-07-24 1
USGS 323303117050201 019S002W03E001S 2015-07-13 2015-07-13 1
USGS 323303117050202 019S002W03E002S 2015-07-24 2015-07-24 1
USGS 323303117051601 019S002W04G005S 1982-11-16 1982-11-16 1
USGS 323303117053201 019S002W04F004S 1982-10-19 1983-05-12 2
USGS 323307117034401 019S002W02D001S 1983-05-13 1983-05-13 1
USGS 323310117044401 019S002W03D002S 1982-11-16 1983-05-13 2
USGS 323313117033901 019S002W02C007S 1995-10-25 2009-12-01 3
USGS 323313117033902 019S002W02C008S 1995-10-25 2009-12-01 3
USGS 323313117033903 019S002W02C009S 1995-10-26 2009-12-02 3
USGS 323313117033904 019S002W02C010S 1995-10-27 2009-12-03 4
USGS 323313117033905 019S002W02C011S 1995-10-26 2009-11-30 3
USGS 323314117033901 019S002W02C004S 1996-03-08 2015-07-14 3
USGS 323314117033902 019S002W02C005S 2009-12-02 2015-07-14 2
USGS 323314117033903 019S002W02C006S 1996-03-08 2015-07-24 2
USGS 323330117053701 018S002W33L009S 1982-11-16 1983-03-16 2
USGS 323331117042801 018S002W34K001S 1982-11-15 1982-11-15 1
USGS 323332117043101 018S002W34L001S 2005-10-21 2005-10-21 1
USGS 323332117043102 018S002W34L002S 2005-10-20 2005-10-20 1
USGS 323332117043103 018S002W34L003S 2005-08-26 2005-08-26 1
USGS 323332117043104 018S002W34L004S 2003-11-13 2005-08-24 2
USGS 323332117043105 018S002W34L005S 2003-11-13 2005-08-23 2
USGS 323631116420201 COTTONWOOD C A BARRETT JUNCTION CA 2007-11-30 2007-11-30 6
USGS 323634116281901 018S005E16H001S 1958-07-18 1966-08-02 2
USGS 323635116282201 018S005E16H003S 2004-07-27 2004-07-27 3
USGS 323657116354401 018S004E08R001S 2004-07-27 2014-04-29 9
USGS 323710116283101 018S005E09K001S 1953-07-22 1976-04-08 3
USGS 323746116222701 018S006E09B001S 1972-04-25 1975-01-07 2
USGS 323800116290001 018S005E04D001S 2011-09-21 2011-09-21 3
USGS 323808116275901 018S005E03M001S 1972-04-20 1972-04-20 1
USGS 323824116224601 018S006E04F001S 1975-01-07 1975-01-07 1
USGS 323833116280301 018S005E03D002S 1972-04-25 1975-01-06 2
USGS 323835116253201 018S005E01B001S 1964-06-24 1966-08-10 2
USGS 323840116215701 018S006E03D001S 1972-04-25 1975-01-08 2
USGS 323846116220001 017S006E34N002S 1972-04-25 1975-01-08 2
USGS 323849116204101 017S006E35P001S 1972-05-19 1976-04-15 2
USGS 323850116281401 017S005E33R001S 1976-04-08 1981-04-01 4
USGS 323852116221501 017S006E33RS01S 1952-10-24 1952-10-24 1
USGS 323853116215101 017S006E34N003S 1973-04-25 1975-01-08 2
USGS 323854116221601 017S006E33R003S 1976-04-07 1976-04-07 1
USGS 323855116221601 017S006E33R002S 1975-01-07 1975-01-07 1
USGS 323856116274401 017S005E34L001S 1976-04-08 1976-04-08 1
USGS 323908116281801 017S005E33H001S 1976-04-08 1976-04-08 1
USGS 323916116210201 017S006E34H001S 1973-07-11 1975-01-08 2
USGS 323918116230901 017S006E32H002S 1972-04-25 1975-01-07 2
USGS 323928116422601 017S003E29M001S 2008-12-10 2008-12-10 1
USGS 323946116420901 017S003E29F001S 2008-12-10 2008-12-10 1
USGS 323947116193301 017S006E25N002S 1976-05-13 1976-05-13 1
USGS 323954116221701 017S006E28J002S 1973-04-25 1975-01-08 2
USGS 323956116221701 017S006E28J003S 1972-04-25 1975-01-08 2
USGS 323958116254901 017S005E25L001S 2017-07-13 2017-07-13 1
USGS 324026116220701 017S006E28AS01S 1975-01-08 1975-01-08 1
USGS 324027116211701 017S006E27B002S 1975-01-09 1975-01-09 1
USGS 324028116211501 017S006E27A001S 1973-07-11 1981-04-01 5
USGS 324028116215001 017S006E27D001S 1975-01-09 1975-01-09 1
USGS 324102116270901 017S005E23E001S 2017-07-13 2017-07-13 1
USGS 324122116200401 017S006E14R001S 1976-05-13 1976-05-13 1
USGS 324134116195101 017S006E13MS01S 1952-10-29 1975-01-09 2
USGS 324134116195901 017S006E14JS01S 1975-01-09 1975-01-09 1
USGS 324135116195501 017S006E13N002S 1973-07-11 1975-01-09 2
USGS 324135116195801 017S006E13M003S 1962-08-07 1962-08-07 1
USGS 324137116214301 017S006E15L001S 1976-04-14 1976-04-14 1
USGS 324147116195801 017S006E13M002S 1973-07-11 1975-01-09 2
USGS 324151116195101 017S006E13E001S 1975-01-09 1975-01-09 1
USGS 324152116195101 017S006E13ES02S 1975-01-09 1975-01-09 1
USGS 324208116204101 017S006E14C001S 1974-08-29 1974-08-29 1
USGS 324210116204601 017S006E14D001S 1974-08-29 1974-08-29 1
USGS 324214116202701 017S006E11QS02S 1974-08-28 1974-08-28 1
USGS 324215116204701 017S006E11N001S 1974-08-28 1974-08-28 1
USGS 324216116203501 017S006E11P001S 1974-08-28 1974-08-28 1
USGS 324220116204801 017S006E11NS02S 1974-08-28 1974-08-28 1
USGS 324231116310201 017S005E07L001S 2017-07-13 2017-07-13 1
USGS 324236116205201 017S006E11MS01S 1974-08-28 1974-08-28 1
USGS 324236116205202 017S006E11MS02S 1974-08-28 1974-08-28 1
USGS 324248116213401 017S006E10F001S 1974-09-20 1974-09-20 1
USGS 324248116213601 017S006E10F002S 1974-09-20 1974-09-20 1
USGS 324300116400001 017S003E04J001S 2011-09-15 2011-09-15 3
USGS 324302116204901 017S006E11DS01S 1974-08-29 1974-08-29 1
USGS 324315116275201 017S005E03P001S 1966-08-02 1974-10-09 2
USGS 324315116275202 017S005E03R001S 1953-07-14 1953-07-14 1
USGS 324344116240301 017S006E05ES01S 1974-11-22 1974-11-22 1
USGS 324357116210301 017S006E03AS01S 1974-08-29 1974-08-29 1
USGS 324359116292601 016S005E32P001S 2004-07-27 2021-07-26 10
USGS 324412116204201 016S006E34R001S 1986-05-14 1986-05-14 1
USGS 324420116211201 016S006E34L001S 1974-08-29 1974-12-19 2
USGS 324432116215201 016S006E33HS03S 1974-08-29 1974-08-29 1
USGS 324433116215001 016S006E33H002S 1974-08-29 1974-08-29 1
USGS 324441116214601 016S006E33H001S 1974-08-29 1974-08-29 1
USGS 324441116215501 016S006E33G001S 1974-08-29 1974-08-29 1
USGS 324506116223201 016S006E28N001S 1974-08-29 1974-08-29 1
USGS 324509116241901 016S006E30P001S 1974-10-03 1974-10-03 1
USGS 324509116270201 016S005E27KS01S 1974-10-09 1974-10-09 1
USGS 324520116210401 016S006E27K001S 1986-06-25 1986-06-25 1
USGS 324600116260001 016S005E15R001S 2011-10-03 2011-10-03 3
USGS 324618116240501 016S006E18QS01S 1974-11-20 1974-11-20 1
USGS 324957116312801 015S004E36C002S 2004-07-21 2004-07-21 3
USGS 325006116320001 015S004E26R001S 2010-09-16 2010-09-16 1
USGS 325008116314201 015S004E25N002S 2010-09-16 2010-09-16 1
USGS 325100116330001 015S004E22R001S 2011-10-31 2011-10-31 3
USGS 325105116233601 015S006E05ES01S 1974-12-05 1974-12-05 1
USGS 325111116241001 015S006E19FS01S 1974-12-17 1974-12-17 1
USGS 325115116243201 015S006E19ES01S 1974-12-18 1974-12-18 1
USGS 325117116251801 015S005E24CS01S 1974-10-08 1974-10-08 1