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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 Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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 -- 183 sites found


Hydrologic unit = 18040010
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 Alpine County, California
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 11293500 NF STANISLAUS R BL SILVER C CA 2015-08-31 2015-08-31 1
  group icon Calaveras County, California
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 11302000 STANISLAUS R BL GOODWIN DAM NR KNIGHTS FERRY CA 1992-07-23 2017-09-21 8
USGS 380200120310001 002N013E11E001M 2008-08-05 2008-08-05 3
USGS 382544120043801 POND AT SPICER SNO-PARK NR TAMARACK, CA 2009-05-05 2010-09-03 13
  group icon San Joaquin County, California
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 374100121110001 003S007E03Q001M 2005-01-04 2005-01-04 1
USGS 374204121104201 003S007E03J001M 1979-05-17 1979-05-17 1
USGS 374444121062201 002S008E20J002M 1972-07-21 2004-08-04 5
USGS 374500121000001 002S009E20D001M 2005-01-11 2005-01-11 1
USGS 374517120573701 002S009E22A001M 1979-05-15 1979-05-15 1
USGS 374517121011501 002S009E19B002M 1971-07-22 1975-06-16 3
USGS 374523120581601 002S009E15P001M 1969-08-13 1975-06-10 3
  group icon Stanislaus County, California
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 11298600 STANISLAUS R A PARROTTS FERRY BR NR COL CA 1966-03-16 1980-09-10 11
USGS 11302500 STANISLAUS R A OAKDALE CA 2014-12-10 2017-09-13 6
USGS 11303000 STANISLAUS R A RIPON CA 1985-06-24 2017-05-11 151
USGS 11303300 STANISLAUS R A KOETITZ RANCH NR RIPON CA 1960-10-06 1980-09-10 76
USGS 373750121092601 PRECIP GAGE 3 MID LATERAL 4 (AG) NR MODESTO CA 2001-01-26 2001-01-26 1
USGS 373758121074101 003S008E31G001M 1950-07-18 1966-08-09 3
USGS 373814121064301 003S008E32C001M 1934-04-05 1966-08-09 4
USGS 373817121043001 003S008E34B001M 1953-08-12 1966-08-10 2
USGS 373817121085401 003S007E25P001M 1948-09-13 1966-08-10 3
USGS 373830121052401 003S008E28Q001M 1951-07-23 1966-08-09 2
USGS 373834121000601 WET DRY SAMPLER 1 A MID ROOFTOP A MODESTO CA 2001-01-12 2004-03-25 75
USGS 373836121062701 003S008E29K001M 1954-06-24 1966-08-10 2
USGS 373840121030901 003S008E26J001M 1954-06-24 1966-08-10 2
USGS 373845121001801 003S009E29L001M 1939-08-03 1978-12-12 6
USGS 373847121000101 003S009E29G001M 1956-04-19 2001-04-03 8
USGS 373848121040001 003S008E27H001M 1951-07-23 1966-08-09 4
USGS 373855121014701 003S009E30E001M 1969-02-27 2001-04-04 3
USGS 373856121071501 003S008E29E001M 1953-08-12 1966-08-09 3
USGS 373903120591001 003S009E28C001M 1939-08-03 2001-03-29 7
USGS 373904120595501 003S009E29B001M 1939-08-03 2001-04-03 7
USGS 373905121011501 003S009E30B001M 2001-04-11 2021-04-13 8
USGS 373911121003801 003S009E29D002M 1956-04-19 2001-04-03 6
USGS 373913121073901 003S008E19Q001M 1950-07-18 1966-08-09 3
USGS 373915120581401 003S009E22N001M 1958-11-20 2001-03-29 5
USGS 373915121061101 003S008E20R001M 1952-06-20 1966-08-10 3
USGS 373921120591001 003S009E21P001M 1951-12-27 1978-12-11 5
USGS 373924121000601 003S009E20K001M 1950-01-06 2001-04-03 7
USGS 373933121082201 003S007E24J001M 1949-08-06 1966-08-10 3
USGS 373934120594601 003S009E20J001M 1951-12-27 1979-08-06 6
USGS 373934121045001 003S008E22L001M 2001-10-25 2020-09-24 7
USGS 373936121091401 003S007E24M001M 1949-04-27 1966-08-10 3
USGS 373938120554801 003S009E24F001M 2002-10-07 2002-10-07 1
USGS 373940121092801 003S007E23H001M 1955-10-27 1966-08-10 2
USGS 373941121070401 003S008E20E001M 1949-08-12 1966-08-10 3
USGS 373945120571101 003S009E23E001M TREATED 2004-09-14 2004-09-14 1
USGS 373946120571001 003S009E23E001M 2002-10-08 2004-09-14 2
USGS 373946121025501 003S008E23H001M 1951-07-23 1966-08-09 3
USGS 373947120551101 003S010E19E001M TREATED 2004-09-14 2004-09-14 1
USGS 373948120551001 003S010E19E001M 2002-10-07 2004-09-14 2
USGS 373948120583701 003S009E21H001M 2001-03-30 2001-03-30 1
USGS 373951121023901 003S008E24C002M 1961-04-28 1961-04-28 1
USGS 373952121001101 003S009E20C001M 1954-03-05 2001-04-04 5
USGS 373954121074901 003S008E19C001M 1953-08-12 1966-08-09 3
USGS 373956121010501 003S009E19B001M 1953-05-07 1966-10-25 2
USGS 373957121011701 003S009E19C001M 1966-06-08 1977-02-01 2
USGS 374002121044301 003S008E22C001M 1961-06-14 1961-06-14 1
USGS 374002121044302 003S008E22C002M 1961-06-16 1961-06-16 1
USGS 374004120544101 003S010E18P001M 1950-01-25 1966-08-08 4
USGS 374004120570301 003S009E14P001M 1949-02-09 1966-08-08 3
USGS 374006121003001 003S009E17N001M 1953-05-07 1966-10-26 2
USGS 374008120581901 003S009E15N002M 1987-05-13 1987-05-13 1
USGS 374009121050701 003S008E16R001M 1950-07-18 1966-08-09 3
USGS 374012120570301 003S009E16N002M 1960-03-29 2001-03-29 5
USGS 374012121002101 003S009E17P001M 1956-04-19 2004-09-14 7
USGS 374012121002301 003S009E17P001M TREATED 2004-09-14 2004-09-14 1
USGS 374021120581201 003S009E15L001M 2002-10-23 2002-10-23 1
USGS 374021121074901 003S008E18K001M 1950-07-18 1966-08-09 3
USGS 374022121040001 003S008E14M001M 1953-08-12 1966-08-09 2
USGS 374022121065301 003S008E17L001M 1952-06-20 1966-08-09 2
USGS 374022121073401 003S008E18J001M 1951-07-23 1966-08-09 3
USGS 374024121014901 003S008E13J001M 1969-04-23 2004-09-21 5
USGS 374025121015301 003S008E13J001M TREATED 2004-09-21 2004-09-21 1
USGS 374028120594301 PRECIP GAGE 8 BOWEN AND ALOHA ST A MODESTO CA 2001-01-26 2001-01-26 1
USGS 374032120565101 003S009E14G001M 2001-04-11 2002-12-11 2
USGS 374033121055701 003S008E16E001M 1953-08-14 1966-08-09 3
USGS 374040121022201 003S008E13F001M 1949-06-07 1966-08-09 3
USGS 374040121080601 003S008E18C001M 1949-08-12 1966-08-09 3
USGS 374040121083701 003S007E13A001M 1955-07-27 1980-08-04 9
USGS 374043121100301 003S007E14B001M 1995-07-19 2015-07-06 4
USGS 374045121003901 003S009E17D001M 1961-10-24 1977-02-01 4
USGS 374048120590901 003S009E16C001M 2004-03-13 2004-11-03 2
USGS 374048120590902 003S009E16C002M 2004-03-14 2005-06-08 3
USGS 374048120590903 003S009E16C003M 2004-06-08 2005-06-08 3
USGS 374105120580001 003S009E10P001M 2001-03-30 2001-03-30 1
USGS 374105121074901 003S008E07Q001M 1952-06-20 1966-08-09 3
USGS 374107121040101 003S008E11N001M 1948-09-14 1966-08-09 3
USGS 374107121054601 003S008E09P001M 1957-07-11 1966-08-09 3
USGS 374108120581701 003S009E10L001M 2004-06-08 2005-06-08 3
USGS 374108121000501 003S009E08K001M TREATED 2004-09-15 2004-09-15 1
USGS 374109120570801 003S009E11M001M 1952-06-20 1966-08-08 2
USGS 374109121000101 003S009E08K001M 1961-09-20 2021-04-13 35
USGS 374110121000301 003S009E08K005M 2003-08-11 2006-08-15 9
USGS 374110121000302 003S009E08K004M 2003-08-11 2006-08-15 6
USGS 374110121000303 003S009E08K003M 2003-08-12 2006-08-15 7
USGS 374110121000304 003S009E08K002M 2003-08-12 2011-12-09 27
USGS 374111121000301 STORM DRAIN INLET W SIDE WHITEHORSE AVE A MODESTO 2005-02-15 2005-02-15 2
USGS 374115120591601 STORM DRAIN INLET S SIDE WENTWORTH LN A MODESTO CA 2005-02-15 2005-06-07 3
USGS 374115120591701 003S009E09L001M 2004-10-27 2004-10-27 1
USGS 374115120591702 003S009E09L002M 2004-10-27 2005-06-07 2
USGS 374115120591703 003S009E09L003M 2004-06-08 2005-06-07 3
USGS 374120120584401 003S009E09J001M 1949-08-06 1966-08-08 3
USGS 374123120581101 003S009E10E001M 2002-10-23 2004-09-15 2
USGS 374123120581901 003S009E10E001M TREATED 2004-09-15 2004-09-15 1
USGS 374124120570501 003S009E11F002M 2004-11-02 2004-11-02 1
USGS 374132120591401 003S009E09F001M 2004-03-26 2005-06-08 4
USGS 374133120595001 003S009E08H003M 2003-11-19 2005-06-07 5
USGS 374133120595002 003S009E08H002M 2003-11-18 2003-11-18 1
USGS 374133120595003 003S009E08H001M 2003-11-18 2003-11-18 1
USGS 374134120582401 003S009E10D001M 2004-03-27 2005-06-08 4
USGS 374137120540701 003S010E08D001M 1948-05-27 1966-08-08 3
USGS 374137121012501 003S009E07C002M 2002-10-16 2004-09-15 2
USGS 374139121012601 003S009E07C002M TREATED 2004-09-15 2004-09-15 1
USGS 374141121071801 003S008E08D001M 1947-10-07 1966-08-09 5
USGS 374147121013301 003S009E07C001M 1960-04-22 1966-08-09 2
USGS 374148120581601 003S009E03N002M 1987-05-19 2020-10-19 19
USGS 374148121002701 003S009E08D001M 1966-08-08 1966-08-08 1
USGS 374148121003801 003S009E05N002M 2001-03-30 2001-03-30 1
USGS 374154121042601 003S008E03Q001M 2001-04-06 2001-04-06 1
USGS 374157120594301 003S009E05R003M 2003-10-20 2005-06-06 4
USGS 374157120594302 003S009E05R002M 2003-11-12 2003-11-12 1
USGS 374157120594303 003S009E05R001M 2003-11-12 2003-11-12 1
USGS 374157121082401 003S008E06N001M 1944-08-18 1966-08-09 4
USGS 374159120565401 003S009E02P001M 1947-10-07 1966-08-08 3
USGS 374200121101200 STANISLAUS R A KOETITZ RANCH CA 1985-09-23 1985-09-23 1
USGS 374203121054101 003S008E04L001M 1952-06-20 1966-08-09 2
USGS 374208120594801 003S009E05J003M 2002-10-17 2002-12-11 2
USGS 374209121103800 STANISLAUS R A CASWELL STATE PARK NR RIPON CA 1992-07-20 2008-01-25 77
USGS 374210121064001 003S008E05K001M 1994-06-08 2020-10-19 9
USGS 374213121025601 003S008E01M002M 2001-04-06 2004-09-21 3
USGS 374213121025602 003S008E01M002M TREATED 2004-09-21 2004-09-21 1
USGS 374217120543801 003S010E06G001M 1959-08-20 2006-03-30 5
USGS 374221120585901 003S009E04G003M 2003-10-21 2005-06-06 4
USGS 374221120585902 003S009E04G002M 2003-07-30 2003-11-13 2
USGS 374221120585903 003S009E04G001M 2003-07-31 2011-12-09 13
USGS 374224120585401 MID CANAL LATERAL NO 6 NR COFFEE RD A MODESTO CA 2005-06-06 2005-06-06 1
USGS 374231120582301 003S009E03D001M 1949-09-13 1979-08-07 4
USGS 374244121090001 002S007E36P001M 1966-03-09 1966-03-09 1
USGS 374246120561201 002S009E36N001M 1950-03-07 1966-08-08 2
USGS 374251121045501 002S008E34P001M 2001-04-06 2006-03-20 4
USGS 374307121010001 002S009E31G001M 1949-04-09 1966-08-08 3
USGS 374307121040101 002S008E35M001M 1987-05-18 2002-08-19 4
USGS 374313121055301 002S008E33F001M 1950-04-19 1966-08-09 2
USGS 374320121010101 002S009E31A001M 2001-10-25 2014-07-09 3
USGS 374321121010501 002S009E31B001M 2020-11-03 2020-11-03 4
USGS 374324121044101 002S008E34C001M 1987-05-12 1987-05-12 1
USGS 374338121050801 002S008E27N001M 1948-05-27 1966-08-09 4
USGS 374341121022501 002S008E25P001M 1949-11-25 1966-08-08 3
USGS 374345120592201 002S009E28N001M 1949-08-12 1966-08-08 3
USGS 374351121004701 PRECIP GAGE 5 TULLY RD NR MODESTO CA 2001-01-26 2001-01-26 1
USGS 374356120583701 002S009E28J001M 1994-07-26 2014-07-09 3
USGS 374359120505901 002S010E27H001M 1966-03-09 1966-03-09 1
USGS 374400120480001 002S011E19K002M 2006-05-03 2006-05-03 3
USGS 374416120492701 002S010E25C001M 1953-08-12 1963-07-30 2
USGS 374419120570701 STANISLAUS R A RIVERBANK CA 1994-08-31 2002-07-16 4
USGS 374446121010101 002S009E19J001M 2001-04-10 2006-03-20 4
USGS 374449120535801 002S010E20M001M 1987-05-19 1987-05-19 1
USGS 374526120475501 002S011E18Q001M 2006-03-20 2021-04-12 7
USGS 374537120594101 STANISLAUS RIVER AT MCHENRY AVE NR ESCALON CA 2007-07-26 2007-10-12 2
USGS 374546120502901 002S010E14F001M 1950-04-12 1967-08-28 6
USGS 374549120502401 002S010E14F003M 1968-04-08 1968-04-08 1
USGS 374556120510401 002S010E15A001M 1951-03-20 1967-08-28 3
USGS 374556120514201 002S010E15F001M 1964-07-08 1967-08-28 2
USGS 374558120515501 002S010E15D001M 1979-08-06 1979-08-06 1
USGS 374600120480001 002S011E07F001M 2006-03-23 2006-03-23 3
USGS 374606120490101 002S010E13B001M 2021-02-25 2021-02-25 4
USGS 374648120501301 002S010E11G001M 1951-03-20 1967-08-28 3
USGS 374701120491401 002S010E01Q003M 2021-02-25 2021-02-25 4
USGS 374708120455301 002S011E04K001M 2020-10-20 2020-10-20 4
USGS 374710120490901 002S010E01Q001M 1987-05-12 1987-05-12 1
USGS 374712120441101 002S011E02N001M 1960-08-16 1966-03-09 2
USGS 374800120401101 001S012E32Q001M 2020-11-04 2020-11-04 4
USGS 374801120384001 001S012E34N001M 2006-05-03 2006-05-03 3
USGS 374815120432201 STANISLAUS R A MILE 50 NR KNIGHTS FERRY CA 1994-09-01 1994-09-01 1
USGS 374915120431801 001S011E26H001M 2019-09-11 2019-09-11 3
  group icon Tuolumne County, California
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 11292450 MF STANISLAUS R A DARDANELLE CA 1979-11-13 1980-09-10 5
USGS 11292500 CLARK FORK STANISLAUS R NR DARDANELLE CA 1977-07-28 1977-09-29 3
USGS 11292700 MF STANISLAUS R A HELLS HALF ACRE BRIDGE CA 1977-07-29 1977-09-29 3
USGS 11299500 STANISLAUS R BL MELONES PH NR SONORA CA 1968-02-19 1968-06-25 3
USGS 11299998 STANISLAUS R BL TULLOCH DAMSITE NR KNIGHTS FRRY CA 1960-10-04 1966-05-09 45
USGS 380500120110001 003N016E26E001M 2008-07-29 2008-07-29 3
USGS 381900119450001 006N020E35E001M 2008-07-28 2018-08-29 6
USGS 382000119490001 006N019E25GS01M 2008-07-28 2008-07-28 2