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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 Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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 -- 1126 sites found


Hydrologic unit = 18070203
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 Los Angeles County, California
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 340243117432801 001S008W33C001S 2007-01-30 2007-01-30 3
USGS 340303117434701 001S008W28N001S 2000-04-06 2011-06-02 5
USGS 340333117431001 001S008W28G002S 2000-04-06 2022-05-03 6
USGS 340524117445001 001S008W22D001S 2007-01-30 2022-05-03 4
USGS 340528117431201 001S008W16B001S 1976-08-02 1977-08-09 2
USGS 340537117425501 001S008W10N015S 2005-06-08 2005-06-08 2
USGS 340559117150901 001S004W12F003S 1976-08-17 1976-08-17 2
USGS 340624117434301 001S008W09D001S 2005-06-08 2005-06-08 3
USGS 340653117423701 001S008W03F002S 2005-07-13 2005-07-13 2
USGS 340703117421901 001S008W03G002S 2000-05-01 2011-06-14 2
USGS 340800117420001 001N008W34A002S 2005-06-08 2005-06-08 2
  group icon Orange County, California
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 11075600 SANTA ANA R A IMPERIAL HWY NR ANAHEIM CA 1972-11-14 2002-03-08 211
USGS 11075610 SANTA ANA R AB SPRD DIV BL IMPERIAL HWY NR ANAHEIM 1998-10-23 2001-04-19 60
USGS 11075620 SANTA ANA R SPRD DIV BL IMPERIAL HWY NR ANA CA 1974-11-05 2004-02-24 577
USGS 11075755 SANTA ANA R A BALL RD AT ANAHEIM CA 1976-09-29 1980-09-24 49
USGS 11075760 SANTA ANA R NR KATELLA AVENUE A ORANGE CA 1974-01-07 1976-03-03 21
USGS 11077500 SANTIAGO C A SANTA ANA CA 1974-01-04 1978-07-17 28
USGS 11078000 SANTA ANA R A SANTA ANA CA 1967-11-19 2003-05-06 254
USGS 11078100 SANTA ANA R ADAMS ST NR COSTA MESA CA 1973-11-18 1977-08-18 34
USGS 333751117572801 006S010W19Q001S 1952-04-04 1957-03-27 4
USGS 333843117574401 006S010W18P001S 1959-02-24 1963-04-23 11
USGS 333855117564401 006S010W17L003S 1963-05-09 1963-05-09 1
USGS 333856117573501 006S010W18K007S 1957-04-08 1964-04-24 13
USGS 333857117565501 006S010W17L001S 1957-03-26 1957-03-26 1
USGS 333859117572101 006S010W18J008S 1958-01-03 1958-01-03 1
USGS 333901117565801 006S010W17M002S 1952-04-04 1964-04-23 14
USGS 333912117570901 006S010W17E002S 1958-07-22 1964-08-06 4
USGS 333917117573901 006S010W18B005S 1959-02-27 1959-02-27 1
USGS 333919117575801 006S010W18C003S 1959-02-25 1960-04-27 4
USGS 333926117574001 006S010W18B004S 1950-09-22 1962-03-09 22
USGS 333927117571101 006S010W18A001S 1959-02-27 1964-04-22 7
USGS 333929117580701 006S010W07N003S 1951-06-11 1964-04-21 2
USGS 333935117565001 006S010W08P001S 1962-12-07 1963-10-04 4
USGS 333938117574001 006S010W07Q003S 1959-02-24 1964-04-21 9
USGS 333942117560101 006S010W09M001S 1962-12-17 1969-05-01 10
USGS 333942117560102 006S010W09M002S 1962-12-28 1964-04-07 5
USGS 333942117560103 006S010W09M003S 1962-12-28 1964-04-07 5
USGS 333943117581101 006S010W07M003S 1959-02-25 1962-05-17 7
USGS 333944117563501 006S010W08K001S 1958-07-22 1962-05-14 11
USGS 333947117574501 006S010W07L001S 1951-06-11 1956-03-29 8
USGS 333953117570801 006S010W08M003S 1957-04-08 1957-04-08 1
USGS 333953117571201 006S010W07J004S 1957-05-23 1964-04-21 13
USGS 333954117570201 006S010W08M004S 1999-11-03 2000-07-31 7
USGS 334000117563801 006S010W08G001S 1958-07-22 1958-07-22 1
USGS 334000117575702 006S010W07E002S 1963-01-09 1963-10-08 4
USGS 334000117575703 006S010W07E003S 1963-01-09 1963-10-09 4
USGS 334000117575704 006S010W07E004S 1963-01-09 1963-10-09 4
USGS 334001117570901 006S010W08E002S 1957-12-13 1958-01-03 2
USGS 334002117583201 006S011W12H002S 1999-11-04 2000-08-02 6
USGS 334004117573901 006S010W07G001S 1951-11-14 1959-02-27 13
USGS 334006117555801 006S010W09E001S 1962-12-29 1964-04-15 4
USGS 334006117555802 006S010W09E002S 1962-12-29 1964-04-15 4
USGS 334010117570301 006S010W08D007S 1957-12-13 1957-12-13 1
USGS 334010117570701 006S010W08D004S 1951-11-14 1957-12-13 2
USGS 334011117564601 006S010W08C002S 1962-11-28 1964-04-07 5
USGS 334012117570301 006S010W08D006S 1957-12-10 1957-12-10 1
USGS 334012117570701 006S010W08D002S 1957-12-10 1957-12-10 2
USGS 334016117570701 006S010W08D009S 1952-02-26 1958-10-01 12
USGS 334017117572601 006S010W07B002S 1957-03-26 1964-04-22 10
USGS 334018117580601 006S010W07D003S 1956-10-29 1962-01-17 12
USGS 334019117565301 006S010W08C001S 1952-03-10 1952-03-10 1
USGS 334019117570801 006S010W08D008S 1951-10-24 1958-10-01 14
USGS 334020117562901 006S010W08B002S 1951-11-14 1957-03-26 3
USGS 334020117563601 006S010W08B003S 1957-03-26 1964-08-06 6
USGS 334024117560801 006S010W04N001S 1953-09-15 1962-03-05 18
USGS 334025117561001 006S010W05R003S 1952-02-20 1952-02-20 1
USGS 334031117573601 006S010W06Q001S 1957-03-26 1957-03-26 1
USGS 334033117565501 006S010W05N002S 1956-05-16 1962-04-16 8
USGS 334034117565701 006S010W05M001S 1958-04-23 1959-09-04 5
USGS 334041117545401 006S010W03L001S 1955-10-24 1955-10-24 1
USGS 334042117545701 006S010W03M002S 1956-05-11 1960-03-29 9
USGS 334043117563602 006S010W05K002S 1962-12-29 1963-10-03 4
USGS 334043117563603 006S010W05K003S 1962-12-29 1963-10-03 4
USGS 334043117571101 006S010W06J001S 1963-03-20 1963-03-20 1
USGS 334043117571102 006S010W06J002S 1963-03-19 1964-04-08 4
USGS 334045117573901 006S010W06K002S 1959-07-23 1959-07-23 1
USGS 334045117574501 006S010W06L003S 1958-07-23 1962-10-23 10
USGS 334046117571401 006S010W06H001S 1959-01-26 1964-10-27 8
USGS 334046117573401 006S010W06K001S 1957-04-08 1957-04-08 1
USGS 334046117574401 006S010W06L002S 1951-06-11 1961-04-05 17
USGS 334048117571201 006S010W06H002S 1951-11-14 1964-08-06 19
USGS 334055117530001 006S010W01E002S 1952-02-20 1968-06-07 22
USGS 334057117583501 006S011W01G002S 2000-02-01 2000-06-05 6
USGS 334058117552001 006S010W04B001S 1956-09-20 1964-06-16 17
USGS 334058117581201 006S010W06D002S 1958-10-22 1963-08-16 6
USGS 334106117575001 006S010W06C001S 1951-07-25 1960-10-12 4
USGS 334108117571201 006S010W06A001S 1957-03-26 1957-03-26 1
USGS 334109117573801 006S010W06B003S 1961-12-26 1961-12-26 1
USGS 334111117574001 006S010W06B002S 1951-11-14 1969-05-23 28
USGS 334111117580701 006S010W06D003S 1960-07-29 1960-07-29 1
USGS 334112117555701 006S010W04D001S 1951-10-23 1951-10-23 1
USGS 334112117563701 006S010W05B004S 1962-01-05 1965-10-01 4
USGS 334112117564801 006S010W05C001S 1951-11-14 1963-09-11 17
USGS 334112117571401 005S010W31R007S 1952-02-28 1964-08-05 6
USGS 334113117564601 005S010W32P002S 1952-03-10 1952-03-10 1
USGS 334114117544901 005S010W34Q004S 2006-08-28 2020-07-23 6
USGS 334114117570801 005S010W32N003S 1956-05-17 1963-09-11 18
USGS 334119117563401 005S010W32Q001S 1958-07-22 1962-01-11 2
USGS 334119117565601 005S010W32P003S 1952-02-19 1963-09-11 16
USGS 334123117574101 005S010W31Q002S 1962-01-05 1962-01-05 1
USGS 334125117542701 005S010W34Q002S 1952-02-19 1952-02-19 1
USGS 334129117574401 005S010W31L001S 1962-01-04 1962-01-04 1
USGS 334129117574402 005S010W31L002S 1959-01-26 1965-07-09 5
USGS 334129117574403 005S010W31L003S 1962-01-04 1964-08-05 2
USGS 334131117540101 005S010W35M001S 1999-11-18 2000-06-09 7
USGS 334131117580501 005S010W31M002S 1958-07-30 1958-07-30 1
USGS 334135117574101 005S010W31K001S 1962-01-02 1964-08-05 3
USGS 334137117563001 005S010W32K001S 1957-04-05 1967-09-01 2
USGS 334137117564201 005S010W32L001S 1962-01-05 1963-06-28 2
USGS 334137117572701 005S010W31J001S 1962-01-02 1964-08-04 4
USGS 334138117561601 005S010W32J001S 1951-06-11 1969-05-12 28
USGS 334138117564601 005S010W32L003S 1957-03-26 1963-06-28 2
USGS 334141117565501 005S010W32F004S 1962-01-04 1966-03-28 4
USGS 334143117545401 005S010W34F003S 2000-10-26 2000-10-26 1
USGS 334147117542001 005S010W34H010S 1999-05-03 2020-07-23 9
USGS 334147117550501 005S010W34E001S 1952-02-19 1952-02-19 1
USGS 334147117571401 005S010W31H003S 1962-01-03 1965-07-09 4
USGS 334149117582901 005S011W36H001S 1999-11-20 2000-07-20 8
USGS 334151117542301 005S010W34G001S 1952-02-19 1952-02-19 1
USGS 334151117574701 005S010W31F003S 1952-02-28 1963-06-26 4
USGS 334152117572601 005S010W31H004S 1957-03-26 1963-03-21 2
USGS 334153117570701 005S010W32D005S 1961-11-28 1961-11-28 1
USGS 334155117574101 005S010W31B003S 1962-01-30 1965-07-09 3
USGS 334156117564801 005S010W32C004S 1962-01-26 1962-01-26 1
USGS 334157117571302 005S010W31A002S 1957-04-08 1963-03-20 5
USGS 334159117571301 005S010W31A012S 1962-01-03 1965-07-09 2
USGS 334200117564201 005S010W32C010S 1960-07-29 1964-08-04 3
USGS 334201117574501 005S010W31C001S 1951-10-23 1962-01-30 2
USGS 334202117571201 005S010W31A001S 1963-03-20 1963-03-20 1
USGS 334204117570801 005S010W32D002S 1962-01-29 1962-01-29 1
USGS 334204117571406 005S010W31A006S 1962-01-29 1962-01-29 1
USGS 334204117571411 005S010W31A011S 1952-02-19 1963-06-26 3
USGS 334205117562801 005S010W32B004S 1962-01-11 1962-01-11 1
USGS 334205117564201 005S010W32C001S 1946-09-10 1964-08-04 5
USGS 334205117565001 005S010W32C011S 1961-11-28 1962-01-29 2
USGS 334206117550901 005S010W33A002S 1951-10-24 1962-01-25 3
USGS 334206117553801 005S010W33C002S 1957-03-26 1965-08-31 7
USGS 334206117555401 005S010W33D001S 1953-09-21 1968-06-04 18
USGS 334207117574601 005S010W30P003S 1961-12-13 1964-08-04 3
USGS 334208117561701 005S010W29R005S 1962-01-19 1962-01-19 1
USGS 334208117571401 005S010W30R005S 1962-02-01 1962-02-01 1
USGS 334208117572601 005S010W30R003S 1961-11-28 1961-11-28 1
USGS 334208117581101 005S010W30N004S 1961-12-13 1964-08-04 3
USGS 334209117553601 005S010W28Q001S 1956-05-14 1964-06-16 17
USGS 334209117574701 005S010W30P005S 1961-12-13 1965-07-09 3
USGS 334210117564201 005S010W29P005S 1963-03-26 1963-03-26 1
USGS 334210117570901 005S010W29N001S 1962-01-25 1962-01-25 1
USGS 334210117574101 005S010W30Q003S 1962-02-01 1962-02-01 1
USGS 334212117540601 005S010W26N001S 1958-02-01 1966-02-07 4
USGS 334212117573601 005S010W30Q006S 1999-11-30 2000-07-18 7
USGS 334216117532901 005S010W26Q003S 1999-11-19 2000-07-21 12
USGS 334216117564501 005S010W29P004S 1952-02-19 1968-06-04 24
USGS 334217117573701 005S010W30Q001S 1952-02-19 1964-06-17 20
USGS 334219117561401 005S010W29R004S 1951-10-23 1963-03-20 3
USGS 334219117570701 005S010W29M009S 1961-12-07 1961-12-07 1
USGS 334222117574502 005S010W30L002S 1961-11-28 1961-11-28 1
USGS 334225117564501 005S010W29L002S 1962-01-25 1962-01-25 1
USGS 334225117570401 005S010W29M010S 1962-01-25 1962-01-25 1
USGS 334229117553601 005S010W28K002S 1961-12-05 1962-01-18 2
USGS 334231117534001 005S010W26L001S 1999-05-18 1999-05-18 1
USGS 334231117560301 005S010W28M003S 1952-02-19 1952-02-19 1
USGS 334231117571601 005S010W30J004S 1962-02-01 1962-02-01 1
USGS 334231117573101 005S010W30K005S 2000-08-21 2020-07-20 9
USGS 334231117574504 005S010W30L004S 1963-03-27 1964-04-13 3
USGS 334231117574505 005S010W30L005S 1963-03-26 1964-04-13 3
USGS 334231117574506 005S010W30L006S 1963-03-26 1964-04-13 3
USGS 334232117564801 005S010W29L004S 1962-01-25 1962-01-25 1
USGS 334233117545801 005S010W27E001S 1958-02-01 1965-02-16 3
USGS 334234117551701 005S010W28H001S 1962-02-20 1962-02-20 1
USGS 334234117554701 005S010W28F003S 1962-01-18 1962-01-18 1
USGS 334234117565601 005S010W29F002S 1961-12-05 1961-12-05 1
USGS 334235117574201 005S010W30G001S 1962-01-31 1962-01-31 1
USGS 334236117571401 005S010W30H003S 1962-02-01 1962-02-01 1
USGS 334241117564301 005S010W29F005S 1962-01-24 1962-01-24 1
USGS 334242117565901 005S010W29F009S 1999-11-05 2000-06-20 8
USGS 334243117574601 005S010W30F003S 1961-11-28 1961-11-28 1
USGS 334245117550801 005S010W28H005S 1962-01-10 1962-01-10 1
USGS 334245117561201 005S010W29H001S 1962-01-19 1962-01-19 1
USGS 334246117545001 005S010W27C002S 2000-10-12 2000-10-12 1
USGS 334246117550901 005S010W28H002S 1956-05-18 1969-05-12 22
USGS 334249117580301 005S010W30C005S 1999-11-16 2000-08-02 8
USGS 334251117561201 005S010W29A003S 1961-11-28 1962-01-19 2
USGS 334251117564401 005S010W29C003S 1962-01-24 1962-01-24 1
USGS 334252117372501 HARDING CANYON C BL MODJESKA RES NR MODJESKA CA 2007-12-07 2007-12-07 1
USGS 334252117553701 005S010W28B006S 1962-01-16 1962-01-16 1
USGS 334253117555001 005S010W28C009S 2000-11-08 2000-11-08 1
USGS 334254117535901 005S010W26D003S 1958-02-01 1966-02-07 5
USGS 334254117564301 005S010W29C001S 1962-01-24 1962-01-24 1
USGS 334256117572601 005S010W30A005S 1962-01-31 1962-01-31 1
USGS 334256117573301 005S010W30B005S 1962-01-31 1962-01-31 1
USGS 334257117553201 005S010W28B003S 1961-11-28 1961-11-28 1
USGS 334257117553401 005S010W28B008S 1962-01-16 1962-01-16 1
USGS 334257117554101 005S010W28C003S 1962-01-16 1962-01-16 1
USGS 334257117573601 005S010W30B006S 1962-02-01 1962-02-01 1
USGS 334258117552701 005S010W28B005S 1962-01-16 1962-01-16 1
USGS 334258117563801 005S010W29B003S 1962-01-19 1962-01-19 1
USGS 334300117570501 005S010W20N001S 1965-01-18 1965-01-18 1
USGS 334302117561601 005S010W20R002S 1999-12-08 2000-07-18 5
USGS 334307117553601 005S010W21Q001S 1962-01-24 1962-01-24 1
USGS 334333117550601 005S010W22E002S 1952-02-27 1955-02-17 3
USGS 334335117550701 005S010W22E003S 1956-04-07 1969-05-12 21
USGS 334405117534701 005S010W14L001S 2000-10-12 2000-10-12 1
USGS 334406117535701 005S010W14M002S 1952-02-27 1957-09-04 7
USGS 334603117533301 005S010W02K002S 2000-11-07 2000-11-07 1
USGS 334607117530101 005S010W01E001S 1937-09-04 1961-12-19 14
USGS 334608117525601 005S010W01E002S 1960-11-28 2001-08-22 8
USGS 334609117530401 005S010W01E003S 1999-05-06 2020-07-16 10
USGS 334631117513001 004S009W31Q001S 2000-11-07 2000-11-07 1
USGS 334635117512401 004S009W31R001S 2000-11-07 2000-11-07 1
USGS 334707117502601 004S009W32B004S 2000-10-26 2000-10-26 1
USGS 334716117525301 004S010W36C002S 2000-11-06 2000-11-06 1
USGS 334806117492001 004S009W28A001S 2000-10-26 2000-10-26 1
USGS 334809117504001 004S009W20P001S 2000-11-06 2000-11-06 1
USGS 334822117521401 004S010W24J001S 2000-11-06 2000-11-06 1
USGS 334826117514101 004S009W19K001S 2000-11-08 2000-11-08 1
USGS 334826117521401 004S010W24J002S 2000-11-06 2000-11-06 1
USGS 334833117490301 004S009W22M001S 1999-05-05 2006-11-16 4
USGS 334859117520501 004S009W19D005S 2000-08-23 2000-08-23 1
USGS 334911117510601 004S009W17N001S 2000-11-06 2000-11-06 1
USGS 334958117514401 004S009W07P001S 2000-11-08 2000-11-08 1
USGS 335105117471401 004S009W02J001S 1999-11-21 2000-06-08 14
USGS 335118117481401 004S009W03H002S 2000-09-20 2000-09-20 1
USGS 335129117472101 SANTA ANA R STORM DR AB IMP HWY A YORBA LINDA CA 1998-02-03 1998-02-03 5
USGS 335207117454401 SANTA ANA R A YORBA REG PARK NR YORBA LINDA CA 1996-10-10 1996-10-10 1
USGS 335210117422801 003S008W34G002S 1999-05-05 2020-07-13 8
USGS 335227117410201 SANTA ANA R US FROM COAL CANYON NR YORBA LINDA CA 1996-10-10 1996-10-10 1
USGS 335230117445501 SANTA ANA R A YORBA LINDA BLVD A YORBA LINDA CA 1996-10-10 1996-10-10 1
USGS 344712117512501 004S009W31B002S 2000-11-08 2000-11-08 1
  group icon Riverside County, California
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 11066440 SANTA ANA R A MISSION BLVD A RIVERSIDE CA 2001-05-21 2016-03-01 19
USGS 11066460 SANTA ANA R A MWD CROSSING CA 1969-08-08 2024-01-22 1553
USGS 11066478 RIVERSIDE WQCP WEIR NO 1 CA 1980-10-24 1980-10-24 1
USGS 11066479 RIVERSIDE WQCP WEIR NO 2 CA 1981-01-08 1981-01-08 1
USGS 11066480 RIVERSIDE WATER QUALITY CONTROL PLANT CA 1969-10-31 1982-10-05 473
USGS 11066500 SANTA ANA R A RIVERSIDE NARROWS NR ARLINGTON CA 1968-03-08 2001-05-24 19
USGS 11067890 SANTA ANA R A PRADO PARK NR CORONA CA 1971-09-30 1980-03-09 48
USGS 11068000 SANTA ANA R A RIVER ROAD NR CORONA CA 1968-12-09 1997-08-14 6
USGS 11072100 TEMESCAL C AB MAIN ST A CORONA CA 1983-06-23 1983-09-19 7
USGS 11072200 TEMESCAL C A CORONA CA 1968-07-18 1969-01-21 3
USGS 11074000 SANTA ANA R BL PRADO DAM CA 1966-10-11 2024-02-29 2999
USGS 333800117170001 004S006W16F001S 2006-12-12 2006-12-12 3
USGS 334459117283201 005S006W11G001S 2000-05-15 2022-05-24 6
USGS 334929117175901 004S004W16H001S 1994-01-04 1994-01-04 1
USGS 335224117332101 003S006W31D001S 2000-04-19 2022-05-18 3
USGS 335224117351101 003S007W35C001S 2000-05-18 2017-01-26 7
USGS 335227117345501 003S007W26G001S 2007-01-10 2007-01-10 3
USGS 335259117360501 003N007W35C003S 2022-05-18 2022-05-18 1
USGS 335300117280001 003S006W23E001S 2007-01-09 2007-01-09 3
USGS 335400117350001 003S007W15H001S 2007-01-31 2007-01-31 3
USGS 335426117232701 LAKE EVANS OUTFLOW AT RIVERSIDE CA 2001-05-22 2001-05-22 6
USGS 335446117384100 SITE NO3 1977-01-28 1977-02-04 3
USGS 335447117371500 SITE NO6 1977-01-28 1977-02-04 2
USGS 335500117260001 003S005W07J002S 2007-01-09 2007-01-09 3
USGS 335544117165201 003S004W10A001S 2007-01-22 2017-02-15 6
USGS 335547117353601 SANTA ANA R A POWER LINE RD NR LA SIERRA HEIGHTS 2001-05-23 2001-05-23 17
USGS 335549117354101 003S007W10A001S 2001-11-15 2001-11-15 1
USGS 335549117354102 003S007W10A002S 2001-11-15 2001-11-15 1
USGS 335644117332601 003S006W06D002S 2001-05-25 2001-05-25 1
USGS 335645117024201 003S002W01C001S 2001-06-25 2001-06-25 1
USGS 335645117332501 003S006W06D001S 2001-05-25 2001-05-25 1
USGS 335645117332601 SANTA ANA R A HAMNER RD AB NORCO CA 2001-05-23 2001-05-23 15
USGS 335650117330301 002S006W31L001S 2001-11-08 2001-11-08 1
USGS 335650117330302 002S006W31L002S 2001-11-08 2001-11-08 1
USGS 335651116590601 002S001W33R002S 2001-06-27 2001-06-27 1
USGS 335651116590901 002S001W33R001S 1997-08-28 1997-08-28 1
USGS 335700117010001 002S001W31H002S 2006-11-27 2006-11-27 3
USGS 335704117014401 002S001W31L001S 2000-04-04 2005-07-29 2
USGS 335707116593401 002S001W33L001S 1997-11-20 1999-08-12 4
USGS 335709117004701 002S001W32M001S 2000-04-04 2021-08-04 9
USGS 335713116584001 002S001W34M001S 2000-06-13 2000-06-13 1
USGS 335740116575001 002S001W34A002S 1997-08-28 2008-03-11 7
USGS 335741116595201 002S001W33D002S 2004-09-24 2022-04-19 10
USGS 335743116582401 002S001W27P001S 2006-03-30 2020-08-11 7
USGS 335743117280501 HOLE LAKE DISCHARGE ABV SANTA ANA R NR PEDLEY CA 2001-05-22 2001-05-23 6
USGS 335748117275601 RIVERSIDE WQC PLANT A VAN BUREN BLVD NR RIVERSIDE 2001-05-22 2001-05-24 6
USGS 335759117300201 W HIDDEN VALLEY WETLANDS LK NR LA SIERRA HEIGHTS 2001-05-22 2001-05-23 8
USGS 335800117310001 002S006W28E001S 2007-01-31 2022-05-17 4
USGS 335800117350001 002S007W26L001S 2007-02-01 2007-02-01 3
USGS 335801116584001 002S001W28A001S 2002-08-28 2003-07-14 2
USGS 335802117261401 CULVERT 1.3 MI N OF JURUPA AVE NR RIVERSIDE CA 2001-05-22 2001-05-22 1
USGS 335804117255201 TESUESQUITO C NR MOUTH A RIVERSIDE CA 2001-05-22 2001-05-22 6
USGS 335806117260501 SANTA ANA R AB MWD CROSSING CA 2001-05-22 2001-05-22 12
USGS 335806117260901 002S005W30H001S 2001-11-16 2001-11-16 1
USGS 335806117265001 002S005W30F002S 2001-05-25 2001-05-25 1
USGS 335806117265101 002S005W30F001S 2001-05-25 2001-05-25 1
USGS 335808116581701 NOBLE C NR BEAUMONT CA 2000-02-16 2001-02-27 2
USGS 335809117301001 SANTA ANA R N OF HIDDEN VALLEY WETLANDS CA 2001-05-22 2001-05-24 16
USGS 335810117224701 002S005W26E002S 2007-01-10 2022-05-11 5
USGS 335813117285501 002S006W26F001S 2016-04-13 2016-04-13 3
USGS 335815117303901 SANTA ANA R A MIRA LOMA CA 1998-06-19 1998-06-19 1
USGS 335816117252101 002S005W29G001S 2001-05-31 2001-05-31 1
USGS 335820116595901 002S001W29H001S 2007-06-28 2021-08-03 6
USGS 335825117282501 002S006W26A001S 2016-04-14 2016-04-14 3
USGS 335826116580501 002S001W27B001S 1997-08-28 2017-06-26 19
USGS 335828117302101 002S006W27D006S 2016-04-14 2016-04-14 3
USGS 335828117310201 002S006W28C001S 2001-11-09 2001-11-09 1
USGS 335828117310202 002S006W28C002S 2001-11-09 2001-11-09 1
USGS 335828117310203 002S006W28C003S 2001-11-09 2001-11-09 1
USGS 335829117055201 002S002W28C002S 1997-07-28 2000-06-14 2
USGS 335830117253401 002S005W29C001S 2001-05-31 2001-05-31 1
USGS 335831117295101 002S006W27C002S 2016-02-01 2016-02-01 3
USGS 335832117300801 002S006W22N005S 2016-03-02 2016-03-02 3
USGS 335833117303301 002S006W21R001S 2016-04-12 2016-04-12 3
USGS 335835116582201 002S001W22P PRECIP 1999-06-07 2002-10-10 7
USGS 335835117221501 002S005W23Q001S 2000-05-16 2000-05-16 1
USGS 335836116582201 002S001W22P - STATE PROJECT WATER 2003-07-14 2014-06-25 39
USGS 335836117302101 002S006W22N004S 2016-04-12 2016-04-12 3
USGS 335838116582409 002S001W22P011S 2000-05-12 2013-12-17 39
USGS 335838116582501 002S001W22P003S 1999-10-27 2005-06-01 14
USGS 335838116582503 002S001W22P005S 2000-05-12 2004-06-29 2
USGS 335838116582504 002S001W22P006S 2000-03-10 2000-03-10 1
USGS 335838116582505 002S001W22P007S 1998-11-23 2013-12-17 71
USGS 335838116582507 002S001W22P009S 1999-12-29 2004-06-29 2
USGS 335838117284201 002S006W23Q001S 2016-02-04 2016-02-04 3
USGS 335838117290901 002S006W23N002S 2016-03-02 2016-03-02 3
USGS 335840116581702 002S001W22Q004S 1999-10-26 2000-08-15 2
USGS 335840116581704 002S001W22Q006S 2000-04-03 2000-06-08 3
USGS 335840116581706 002S001W22Q007S 1999-04-21 2001-05-02 14
USGS 335840116581901 LITTLE SAN GORGONIO CR NR BEAUMONT CA 1999-07-13 2001-02-27 2
USGS 335842117293101 002S006W22R003S 2015-09-24 2016-05-09 6
USGS 335843117243501 002S005W21Q001S 2001-11-16 2001-11-16 1
USGS 335843117243502 002S005W21Q002S 2001-11-16 2001-11-16 1
USGS 335844117303201 002S006W21R002S 2016-04-13 2016-04-13 3
USGS 335845117300501 002S006W22N003S 2015-12-17 2015-12-17 3
USGS 335848117024301 002S002W24L001S 1997-07-16 2022-06-28 14
USGS 335851117302101 002S006W22M001S 2016-04-11 2016-04-11 3
USGS 335858117282501 002S006W23J002S 2016-01-19 2016-01-19 3
USGS 335858117294101 002S006W22G002S 2016-01-14 2016-01-14 3
USGS 335900117230001 002S005W15L011S 2006-11-29 2006-11-29 3
USGS 335900117250001 002S005W17R004S 2006-11-30 2006-11-30 3
USGS 335902116580901 002S001W22G003S 2001-02-13 2001-02-13 1
USGS 335903116580701 LITTLE SAN GORGONIO C EDGAR CYN NR CHERRY VALLEY 2001-02-13 2005-01-13 2
USGS 335903116580902 002S001W22G004S 2001-02-13 2001-02-13 1
USGS 335903116581001 002S001W22G005S 2001-02-13 2001-02-13 1
USGS 335903116581004 002S001W22G008S 2000-07-31 2001-05-01 6
USGS 335906116575201 002S001W22H002S 1997-08-28 2007-01-11 5
USGS 335907116580801 002S001W22G002S 1999-08-10 2001-06-25 3
USGS 335911117025501 002S002W24E002S 2000-05-04 2009-05-05 8
USGS 335917117283101 002S006W23A008S 2016-04-25 2016-04-27 6
USGS 335924117031701 002S002W14R003S 1997-07-17 2024-02-27 3
USGS 335926117340001 002S007W13P002S 1991-04-05 1992-08-11 5
USGS 335926117340002 002S007W13P003S 1990-11-13 1992-08-11 17
USGS 335926117340003 002S007W13P004S 1991-02-22 1992-08-11 5
USGS 335926117340007 002S007W13P008SLYS 1991-06-06 1992-09-22 7
USGS 335926117340008 002S007W13P009SLYS 1991-06-06 1992-09-22 7
USGS 335926117340009 002S007W13P010SLYS 1991-06-06 1992-09-08 6
USGS 335926117340010 002S007W13P011SLYS 1991-06-06 1992-09-08 6
USGS 335926117340011 002S007W13P012SLYS 1991-06-06 1992-09-08 6
USGS 335926117340012 002S007W13P013SLYS 1992-04-15 1992-09-08 3
USGS 335926117340013 002S007W13P014SLYS 1991-06-06 1992-04-15 4
USGS 335935117283501 002S006W14Q002S 2015-09-23 2015-09-23 3
USGS 335938117281501 002S006W13M005S 2016-10-25 2016-10-25 9
USGS 335949117283901 002S006W14K002S 2016-02-10 2016-02-10 3
USGS 335951117292201 002S006W15H001S 2016-02-19 2016-02-19 3
USGS 335955117281601 002S006W13E003S 2016-11-03 2016-11-03 9
USGS 335955117281602 002S006W13E004S 2016-10-31 2016-10-31 6
USGS 335955117281603 002S006W13E005S 2016-11-01 2016-11-01 6
USGS 335958117274701 002S006W13F006S 2016-01-27 2016-01-27 3
USGS 340001117285101 002S006W14G004S 2016-03-08 2016-03-08 3
USGS 340003117042101 002S002W15A004S 2023-04-20 2023-04-20 1
USGS 340005117272802 002S006W13A001S 2016-10-24 2016-10-24 3
USGS 340005117272803 002S006W13A002S 2016-10-24 2016-10-24 3
USGS 340007117035501 002S002W14D001S 2023-04-20 2023-04-20 1
USGS 340010117275201 002S006W13C011S 2016-11-04 2016-11-04 9
USGS 340010117281601 002S006W14A002S 2015-12-07 2015-12-07 3
USGS 340012117040701 002S002W15A003S 2023-04-20 2023-04-20 1
USGS 340014117034301 002S002W14C001S 1997-07-17 2023-04-20 10
USGS 340014117283401 002S006W14B001S 2016-02-25 2016-02-25 3
USGS 340014117292101 002S006W15A003S 2016-04-20 2016-04-20 3
USGS 340015117275501 002S006W12P001S 2015-12-16 2015-12-16 3
USGS 340016117281801 002S006W11R003S 2016-04-15 2016-04-15 3
USGS 340017117272901 002S006W12Q003S 2016-03-14 2016-03-14 3
USGS 340017117290301 002S006W11N002S 2016-02-16 2016-02-16 3
USGS 340018117264801 002S006W07P001S 2016-01-22 2016-01-22 3
USGS 340022117212601 002S005W12P001S 2006-11-29 2006-11-29 3
USGS 340024117272701 002S006W12R003S 2015-09-22 2015-09-22 3
USGS 340025117301101 002S006W10N001S 2000-04-20 2011-06-22 5
USGS 340027117224901 SANTA ANA R A MARKET ST NR RIVERSIDE CA 2015-07-21 2016-03-01 4
USGS 340030117262301 002S005W07J002S 2016-01-11 2016-01-11 3
USGS 340033117204001 002S004W07L001S 2000-05-05 2022-05-11 9
USGS 340035117274501 002S006W12L003S 2015-12-14 2015-12-14 3
USGS 340036117273901 002S006W12K005S 2016-11-10 2016-11-10 9
USGS 340036117274401 002S006W12K007S 2016-10-27 2016-10-27 9
USGS 340036117274402 002S006W12K006S 2016-10-26 2016-10-28 11
USGS 340036117275201 002S006W12L004S 2016-11-02 2016-11-02 6
USGS 340040117275701 002S006W12L002S 2016-03-18 2016-03-18 3
USGS 340040117283201 002S006W11K009S 2016-05-13 2016-05-20 8
USGS 340041117272901 002S006W12K008S 2016-03-23 2016-03-23 3
USGS 340042117270801 002S005W07M002S 2016-03-28 2016-03-28 3
USGS 340043117264701 002S005W07F002S 2016-04-28 2016-04-28 3
USGS 340044117291401 002S006W11E001S 2016-04-01 2016-04-01 3
USGS 340046117310301 002S006W09F001S 1986-01-28 1986-01-28 1
USGS 340100117220001 002S005W11C004S 2006-11-29 2006-11-29 3
USGS 340103117312601 002S006W09D003S 2000-04-20 2022-05-17 9
USGS 340107117274701 002S006W12C002S 2015-09-22 2015-09-22 3
USGS 340107117350001 002S007W11B002S 1986-01-30 1986-01-30 1
USGS 340108117273901 002S006W12B003S 2016-05-23 2016-05-23 3
USGS 340120117273801 002S006W01Q003S 2015-09-23 2015-09-23 3
USGS 340120117274401 002S006W01Q004S 2015-12-10 2015-12-10 3
USGS 340123117272201 002S006W01J001S 2015-12-16 2015-12-16 3
USGS 340129117274101 002S006W01K001S 2015-12-09 2015-12-09 3
USGS 340142117274901 002S006W01F002S 2015-12-15 2015-12-15 3
USGS 340159117300201 002S006W03C001S 1986-01-29 1986-01-29 1
USGS 340159117301501 002S006W03D001S 1986-01-29 1986-01-29 1
USGS 340200117311701 002S006W04D001S 1986-01-28 1986-01-28 1
USGS 340255117311201 001S006W28N003S 1986-01-29 1986-01-29 1
  group icon San Bernardino County, California
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 11048920 RATHBONE C NR MOONRIDGE CA 1972-02-23 1980-11-11 8
USGS 11048930 KNICKERBOCKER C A BIG BEAR LK VILLAGE CA 1972-02-23 1972-12-20 4
USGS 11048950 METCALF C A BIG BEAR LK VILLAGE CA 1972-02-24 1980-11-11 10
USGS 11048970 GROUT C NR FAWNSKIN CA 1972-02-24 1980-07-07 5
USGS 11048980 NORTH C NR BIG BEAR LAKE VILLAGE CA 1972-02-23 1972-07-19 3
USGS 11049400 SANTA ANA R AB SEVEN OAKS DAM 2000-02-16 2013-08-06 44
USGS 11051499 SANTA ANA R NR MENTONE (RIVER ONLY) CA 1998-06-12 1998-06-12 1
USGS 11051500 SANTA ANA R NR MENTONE CA 1971-10-21 2001-09-13 82
USGS 11051502 SAR SUPP GAGE NR MENTONE CA 2005-02-11 2005-02-11 1
USGS 11056200 SANTA ANA R A WATERMAN AVE AT SAN BERNARDINO CA 1976-02-05 1982-08-02 123
USGS 11057000 SAN TIMOTEO C NR REDLANDS CA 1976-02-06 1979-03-29 28
USGS 11057500 SAN TIMOTEO C NR LOMA LINDA CA 1979-05-02 1994-03-25 111
USGS 11058500 E TWIN C NR ARROWHEAD SPRINGS CA 2000-01-11 2001-07-10 7
USGS 11059000 WARM C FLOODWAY A SAN BERNARDINO CA 1972-11-29 1977-05-03 2
USGS 11059100 SAN BERNARDINO WATER QUALITY CONTROL PLANT CA 1972-10-02 1980-10-07 242
USGS 11059300 SANTA ANA R A E ST NR SAN BERNARDINO CA 1968-12-09 2024-01-22 992
USGS 11060400 WARM C NR SAN BERNARDINO CA 1998-10-20 2004-08-13 93
USGS 11062000 LYTLE C NR FONTANA CA 1993-10-06 1993-10-06 1
USGS 11063510 CAJON C BL LONE PINE C NR KEENBROOK CA 2000-01-19 2001-07-11 8
USGS 11063680 DEVIL CYN C NR SAN BERNARDINO CA 1996-02-07 2001-04-18 6
USGS 11066050 SANTA ANA R A COLTON CA 1966-10-10 1970-06-25 44
USGS 11067000 DAY C NR ETIWANDA CA 2000-01-19 2001-07-11 7
USGS 11073210 RIALTO PIPLNE BL SAN ANTONIO DAM NR CLAREMONT CA 1974-03-28 1977-02-04 29
USGS 11073360 CHINO C A SCHAEFER AVENUE NR CHINO CA 1974-03-28 1998-02-03 38
USGS 11073440 CHINO C NR CHINO CA 1969-01-14 1969-01-24 3
USGS 11073470 CUCAMONGA C NR UPLAND CA 2000-01-14 2001-07-11 7
USGS 11073495 CUCAMONGA C NR MIRA LOMA CA 1969-01-20 2001-08-16 95
USGS 335339117383601 CHINO C US OF MILL C A PRADO DAM CA 1999-07-29 1999-07-29 1
USGS 335452117384001 CHINO C US OF PRADO DAM A PRADO DAM CA 1999-07-29 1999-07-29 1
USGS 335506117381201 MILL C NR SPLATTERS DUCK CLUB IN PRADO WETLANDS CA 1999-07-29 2000-08-08 9
USGS 335625117391200 SITE NO2 1977-02-04 1977-02-04 1
USGS 335645117332701 SANTA ANA R A HAMNER RD NR NORCO CA 1998-09-16 1998-09-16 4
USGS 335645117365301 MILL C A CHINO CORONA RD NR NORCO CA 1998-09-15 2004-02-24 71
USGS 335645117375101 WASH WATER POND ON SWAGER & SONS DAIRY IN CHINO CA 1999-07-29 1999-07-29 1
USGS 335646117361001 WASH WATER POND ON VANDENBERG DAIRY IN CHINO CA 1999-07-29 1999-07-29 1
USGS 335655117395601 CHINO C DS OF PINE AVE AT PRADO DAM CA 1999-07-29 2000-08-10 2
USGS 335712117385701 PINE AVE DRAINAGE DITCH NR CHINO CA 2004-02-02 2004-02-23 6
USGS 335719117383701 WASH WATER POND ON MARQUEZ DAIRY IN CHINO CA 1999-07-29 1999-07-29 1
USGS 335728117314101 SANTA ANA R A GRULLA CT A LA SIERRA CA 1997-08-14 2001-05-23 13
USGS 335746117282101 SANTA ANA R DS OF VAN BUREN BLVD A RIVERSIDE CA 1997-08-14 1998-06-18 2
USGS 335752117351101 WASH WATER POND ON VANDERSTELT DAIRY IN CHINO CA 1999-07-29 1999-07-29 1
USGS 335800117390001 002S007W19Q001S 2007-02-01 2017-01-26 5
USGS 335803117391301 INDUSTRIAL PARK STORM DRAIN NR KIMBALL NR CHINO CA 2004-02-02 2004-02-23 6
USGS 335825117411701 CHINO C BL CENTRAL AVE NR CHINO CA 1998-09-15 1999-07-29 4
USGS 335827117253801 SUNNYSLOPE CHANNEL A SANTA ANA RRP NR RUBIDOUX CA 2000-08-17 2001-05-22 8
USGS 335835117253401 SUNNYSLOPE CHANNEL NR RIBIDOUX NC AT SANTA ANA RRP 2000-08-17 2000-08-17 1
USGS 335835117412701 CHINO C AB CENTRAL AVE NR LOS SERRANOS CA 2000-08-07 2000-08-07 1
USGS 335900117410001 002S008W23C002S 2007-02-15 2007-02-15 3
USGS 335910117425801 LITTLE CHINO C AB PIPELINE AVE NR LOS SERRANOS CA 2000-08-11 2000-08-11 1
USGS 335913117080701 SAN TIMOTEO C NR EASTSIDE RANCH NR YUCAIPA CA 2000-08-16 2000-09-12 2
USGS 335918117343301 WASH WATER POND ON KROES DAIRY IN CHINO CA 1999-07-29 1999-07-29 1
USGS 335924117412201 002S008W23C001S 2000-04-19 2022-05-16 10
USGS 340000117330001 002S007W12J001S 2007-03-28 2007-03-28 3
USGS 340003116582501 002S001W15F002S 1997-07-16 2000-06-15 2
USGS 340018117091401 002S003W12N001S 2004-04-22 2004-04-22 1
USGS 340032117035001 002S002W11M003S 2013-08-22 2023-04-20 3
USGS 340033117063101 002S002W08K001S 2004-04-30 2004-04-30 1
USGS 340037117064301 YUCAIPA C BL DUNLAP ACRES CA 1998-02-03 1998-02-03 1
USGS 340041117355701 CUCAMONGA C BL CONFLUENCE A CHINO AV NR ONTARIO CA 2001-08-15 2001-08-16 25
USGS 340041117355901 CUCAMONGA C WW EFFLUENT A CHINO AVE NR ONTARIO CA 2000-08-09 2001-08-16 3
USGS 340042117355901 CUCAMONGA C MAIN CHANNEL A CHINO AVE NR ONTARIO CA 2000-08-09 2001-08-16 4
USGS 340046117020801 002S002W12H001S 2007-01-24 2023-11-08 3
USGS 340046117020802 002S002W12H002S 2006-11-14 2024-02-24 3
USGS 340046117020803 002S002W12H003S 1998-07-28 2023-11-08 6
USGS 340046117020804 002S002W12H004S 1998-07-28 2023-11-08 6
USGS 340046117040101 002S002W11E001S 2013-08-22 2023-04-20 4
USGS 340049117031401 YUCAIPA C A 5TH ST A YUCAIPA CA 1998-02-03 1998-02-23 3
USGS 340051117002601 YUCAIPA C A MESA GRANDE BRDG NR YUCAIPA CA 1998-02-19 1998-02-23 2
USGS 340053117051701 002S002W09H001S 2004-04-29 2004-04-29 1
USGS 340054117002901 002S001W08F001S 1997-07-16 2024-02-21 9
USGS 340057117032501 002S002W11B001S 2014-03-20 2024-02-22 2
USGS 340057117040601 002S002W11D001S 1997-07-15 2003-06-04 2
USGS 340100117050301 002S002W10D001S 1974-10-01 1974-10-01 1
USGS 340100117360001 002S007W04J001S 2007-02-15 2007-02-15 3
USGS 340105117031601 002S002W11A001S 1997-07-15 2022-05-10 17
USGS 340106117045001 002S002W10B002S 1996-07-11 2009-04-23 3
USGS 340112117355801 WESTWIND PARK STORM DRAIN NR ONTARIO CA 2004-02-02 2004-02-23 6
USGS 340112117360401 WHISPERING LKS GOLF COURSE PARKING LOT NR ONTARIO 2004-02-02 2004-02-23 6
USGS 340112117372501 STORM DRAIN NR PARCO AND RIVERSIDE A ONTARIO CA 2004-02-02 2004-02-23 6
USGS 340120117051301 002S002W04R001S 1996-07-09 2006-12-13 5
USGS 340124117021301 002S002W01K001S 1998-06-02 1998-06-02 1
USGS 340127117355901 INLAND EMPIRE RECL WATER OUTFL TO CUCAMONGA C CA 1999-02-11 2001-06-15 13
USGS 340129117035101 002S002W02M001S 1997-07-15 2003-06-03 3
USGS 340129117044201 002S002W03L001S 1996-07-11 2009-04-03 7
USGS 340130117054901 002S002W04L002S 2004-09-02 2023-11-06 5
USGS 340130117054902 002S002W04L003S 2004-09-01 2023-11-07 2
USGS 340130117054903 002S002W04L004S 2004-11-19 2024-02-23 5
USGS 340130117054904 002S002W04L005S 2004-11-18 2023-11-07 5
USGS 340130117054905 002S002W04L006S 2006-11-15 2023-11-06 6
USGS 340132117214401 SANTA ANA R A RIVERSIDE RD NR RIVERSIDE CA 1997-08-13 2016-03-01 21
USGS 340134117054801 002S002W04L001S 2003-11-18 2003-11-18 1
USGS 340135117051502 002S002W04J003S 2004-02-11 2024-02-26 6
USGS 340135117051601 002S002W04J002S 1996-07-10 1996-07-10 1
USGS 340135117063001 002S002W05K001S 2004-02-12 2004-02-12 1
USGS 340136117023701 002S002W01F001S 2013-05-30 2013-05-30 1
USGS 340136117033901 002S002W02F002S 2004-02-05 2024-01-11 4
USGS 340136117033902 002S002W02F003S 2004-02-06 2024-01-10 7
USGS 340136117033903 002S002W02F004S 2004-02-04 2024-01-10 10
USGS 340136117033904 002S002W02F005S 2004-06-15 2024-01-11 11
USGS 340136117033905 002S002W02F006S 2012-05-15 2024-01-12 5
USGS 340137117053501 002S002W04G004S 1998-04-30 2006-12-13 9
USGS 340144117053601 002S002W04G003S 1996-07-10 1996-07-10 1
USGS 340146117355801 CUCAMONGA C BL HWY 60 A ONTARIO CA 1999-02-11 1999-08-11 5
USGS 340148117045401 002S002W03E001S 1996-07-09 2004-06-30 2
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USGS 340916117194501 001N004W20M001S 1951-07-16 1951-10-02 6
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USGS 340952117151801 001N004W24C001S 1952-07-01 1958-01-22 7
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