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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 Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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 -- 259 sites found


Hydrologic unit = 02060005
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 Kent County, Delaware
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 01490590 Cow Marsh Ditch nr Willow Grove, DE 2004-04-30 2004-06-15 4
USGS 01490600 MEREDITH BRANCH NEAR SANDTOWN, DE 1974-04-18 2004-06-15 20
USGS 01491010 SANGSTON PRONG NEAR WHITELEYSBURG, DE 1990-11-07 1991-10-23 4
USGS 385347075431301 Mb22-02 1983-06-29 1983-06-29 1
USGS 385515075431701 Lb52-07 2014-12-01 2019-12-10 4
USGS 385810075414701 Lb24-01 1983-08-10 1983-08-10 1
USGS 385830075423201 Lb23-03 2014-12-01 2019-10-29 4
USGS 390116075365300 Kc44-01 1981-06-16 1981-06-16 1
USGS 390128075435401 Kb42-09 1983-05-27 1983-05-27 1
USGS 390136075390801 Kc41-01 1983-06-08 1983-06-08 1
USGS 390205075430901 Kb32-29 2014-12-08 2019-10-29 2
USGS 390224075391601 Kc31-01 1975-02-20 1975-02-20 1
USGS 390339075421101 Kb23-02 1983-09-01 1983-09-01 1
USGS 390417075361901 Kc14-02 1983-08-11 1983-08-11 1
USGS 390503075354001 Jc55-03 1988-06-29 2001-06-28 5
USGS 390503075354301 Jc55-02 1988-06-29 1988-06-29 2
USGS 390533075380501 Jc52-04 2001-07-02 2023-08-02 3
USGS 390633075403101 Jb45-02 1982-06-29 1982-06-29 1
USGS 390634075433401 Jb42-05 2014-12-16 2019-10-29 4
USGS 390635075403001 Jb45-03 1982-06-28 1982-06-28 1
USGS 390733075444201 Jb31-01 1983-06-09 1983-06-09 1
  group icon Caroline County, Maryland
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 01491000 CHOPTANK RIVER NEAR GREENSBORO, MD 1964-06-11 2024-02-14 1512
USGS 01491020 Gravelly Br nr Greensboro, MD 2004-04-22 2004-06-18 4
USGS 01491050 SPRING BRANCH NEAR GREENSBORO, MD 1991-06-10 2004-06-18 5
USGS 01491150 CORKEL DITCH NEAR DENTON, MD 1989-10-25 1989-10-25 1
USGS 01491800 KNOTT MILLPOND NEAR HILLSBORO, MD 1990-11-07 1991-10-23 4
USGS 384053075570201 CO Fb 24 1955-03-08 1955-03-08 1
USGS 384157075454101 CO Fd 41 2010-07-14 2010-07-14 3
USGS 384157075454102 CO Fd 42 2010-07-22 2010-07-22 3
USGS 384157075454103 CO Fd 43 2010-07-20 2010-07-20 2
USGS 384203075514101 CO Fc 37 1982-12-14 1982-12-14 1
USGS 384215075510701 CO Fc 32 1982-02-11 1982-02-11 1
USGS 384216075541201 CO Fc 29 1977-06-21 1977-06-21 1
USGS 384242075543601 CO Fc 38 2012-07-11 2012-07-11 4
USGS 384254075534801 CO Fc 33 1982-12-14 1982-12-14 1
USGS 384324075585401 CO Fb 27 1981-05-11 1981-05-11 1
USGS 384425075543401 CO Fc 36 1982-12-14 1982-12-14 1
USGS 384444075561701 CO Fb 28 1982-12-13 1982-12-13 1
USGS 384445075511201 CO Fc 31 1982-11-02 1982-11-02 1
USGS 384450075534001 CO Fc 30 1982-11-02 1982-11-02 1
USGS 384451075564001 CO Fb 29 1982-12-13 1982-12-13 1
USGS 384455075581301 CO Fb 31 2012-05-30 2022-08-22 5
USGS 384533075502701 CO Ec 29 1982-12-15 1982-12-15 1
USGS 384603075491501 CO Ed 26 1982-02-11 1982-05-05 2
USGS 384607075504001 CO Ec 18 1982-02-23 1982-02-23 1
USGS 384630075524801 CO Ec 25 1981-05-06 2013-08-20 9
USGS 384630075524802 CO Ec 16 1982-02-11 1982-05-05 2
USGS 384630075524803 CO Ec 32 1988-07-14 1988-07-14 1
USGS 384631075524901 CO Ec 36 2002-12-10 2023-08-31 5
USGS 384648075515201 CO Ec 34 2002-11-18 2002-11-18 1
USGS 384709075560301 CO Eb 11 1983-01-17 1983-01-17 1
USGS 384712075542501 CO Ec 15 1982-11-02 1982-11-02 1
USGS 384844075525501 CO Ec 31 1983-09-22 1983-09-22 1
USGS 384847075482601 CO Ed 7 1953-11-24 1953-11-24 1
USGS 384853075471401 CO Dd 59 1983-09-22 1983-09-22 1
USGS 384927075473601 CO Ed 33 1983-01-04 1983-01-04 1
USGS 384941075455601 CO Ed 27 1982-05-05 1982-05-05 1
USGS 384954075511801 CO Ec 14 1955-03-08 1955-03-08 1
USGS 385009075444402 CO De 19 2012-06-27 2023-08-08 5
USGS 385009075445001 CO De 15 1988-07-19 2007-06-20 5
USGS 385009075445002 CO De 16 1988-07-19 2001-08-22 8
USGS 385022075450201 CO Dd 75 1998-09-16 2003-09-08 2
USGS 385104075485601 CO Dd 49 1982-02-22 1982-05-05 2
USGS 385114075485201 CO Dd 60 1988-07-14 1988-07-14 2
USGS 385114075485202 CO Dd 61 1988-07-14 1988-07-14 2
USGS 385124075452301 CO Dd 55 1983-01-04 1983-01-04 1
USGS 385134075480401 CO Db 79 2002-12-17 2012-08-16 4
USGS 385159075502202 CO Dc 153 2010-08-16 2010-08-16 3
USGS 385159075502203 CO Dc 154 2010-08-19 2010-08-19 2
USGS 385159075502204 CO Dc 155 2010-08-25 2010-08-25 3
USGS 385204075541201 CO Dc 141 1982-12-07 1982-12-07 1
USGS 385208075460801 CO Dd 74 1989-10-19 2013-06-06 7
USGS 385213075553801 CO Db 9 1982-12-07 1982-12-07 1
USGS 385219075472001 CO Dd 65 1989-10-19 1989-10-19 2
USGS 385223075502001 CO Dc 38 1953-11-24 1953-11-24 1
USGS 385228075472801 CO Dd 66 1989-10-25 1989-10-25 2
USGS 385231075535201 CO Dc 149 1998-09-16 1998-09-16 1
USGS 385235075493401 CO Dd 84 2012-06-20 2022-08-30 5
USGS 385236075493101 CO Dd 46 1969-05-01 1969-05-01 1
USGS 385246075495201 CO Dd 2 1953-11-24 1953-11-24 1
USGS 385246075513901 CO Dc 143 1982-11-29 1982-11-29 1
USGS 385252075491701 CO Dd 48 1982-02-10 1982-05-11 2
USGS 385302075540101 CO Dc 146 1989-06-27 1998-09-16 16
USGS 385322075503001 CO Dc 28 1953-11-23 1953-11-23 1
USGS 385339075493801 CO Dd 57 1982-11-29 1982-11-29 1
USGS 385412075544101 CO Dc 142 1982-09-30 1982-09-30 1
USGS 385414075493001 CO Dd 76 2001-08-16 2001-08-16 1
USGS 385419075475001 CO Dd 54 1982-11-30 1984-06-05 5
USGS 385429075484401 CO Dd 58 1983-09-22 1983-09-22 1
USGS 385430075473001 CO Dd 56 1982-11-30 1982-11-30 1
USGS 385450075541001 CO Dc 139 1982-12-06 1982-12-06 1
USGS 385458075563001 CO Db 1 1955-03-08 1955-03-08 1
USGS 385500075514701 CO Cc 59 1982-11-03 1982-11-03 1
USGS 385502075515301 CO Cc 95 1982-12-06 1984-06-05 4
USGS 385505075595301 CO Cc 60 1982-02-10 1982-05-11 2
USGS 385514075520301 CO Cc 54 1981-05-06 1984-06-05 5
USGS 385519075501201 CO Cc 90 1983-01-18 1983-01-18 1
USGS 385523075520702 CO Cc 84 1982-05-12 1982-05-12 1
USGS 385529075492201 CO Cd 61 1982-11-29 1984-06-04 4
USGS 385536075553701 CO Cb 17 1982-12-08 1982-12-08 1
USGS 385548075470401 CO Cd 58 1982-11-30 1982-11-30 1
USGS 385557075481201 CO Cd 54 1982-11-03 2003-09-16 6
USGS 385605075534001 CO Cc 63 1982-02-11 1982-05-11 2
USGS 385606075522401 CO Cc 94 1982-12-06 1982-12-06 1
USGS 385609075490001 CO Cd 62 1983-09-22 1983-09-22 1
USGS 385622075524501 CO Cc 55 1983-01-04 2001-08-16 2
USGS 385623075555201 CO Cb 16 1983-01-05 1983-01-05 1
USGS 385632075511401 CO Cc 91 1982-12-07 1982-12-07 1
USGS 385632075522101 CO Cc 100 1989-10-05 1989-10-05 2
USGS 385649075531701 CO Cc 96 1983-09-23 1983-09-23 1
USGS 385651075531301 CO Cc 11 1953-11-24 1953-11-24 1
USGS 385656075525501 CO Cc 26 1955-03-08 1955-03-08 1
USGS 385659075543501 CO Cc 57 1983-01-05 1983-01-05 1
USGS 385700075544001 CO Cc 56 1983-01-05 1983-01-05 1
USGS 385705075513401 CO Cc 93 1982-12-07 1982-12-07 1
USGS 385714075502901 CO Cc 92 1982-12-07 1982-12-07 1
USGS 385723075440101 CO Ce 8 1982-02-23 1982-05-10 2
USGS 385745075455001 CO Cd 56 1982-02-11 1982-02-11 1
USGS 385756075560901 CO Cb 7 1953-11-24 1953-11-24 1
USGS 385800075535801 CO Cc 70 1981-12-21 1981-12-21 1
USGS 385810075464001 CO Cd 59 1982-11-30 1982-11-30 1
USGS 385816075474801 CO Cd 68 2012-08-22 2012-08-22 4
USGS 385819075480701 CO Cd 66 2010-06-29 2010-06-29 2
USGS 385819075480702 CO Cd 67 2010-07-06 2010-07-06 2
USGS 385823075480601 CO Cd 36 1953-11-17 1953-11-17 1
USGS 385832075482701 CO Cd 69 2012-06-18 2012-06-18 4
USGS 385847075451101 CO Cd 60 1982-11-30 1982-11-30 1
USGS 385847075534001 CO Cc 80 1981-12-22 1981-12-22 1
USGS 385859075493501 CO Cd 53 1982-11-03 1982-11-03 1
USGS 385908075480901 CO Cd 49 1975-08-06 1975-08-06 1
USGS 385944075550101 CO Cb 15 1983-01-03 1983-01-03 1
USGS 390010075531101 CO Bc 16 1982-12-08 1983-09-23 2
USGS 390042075495601 CO Bd 56 1981-05-05 1983-01-03 2
USGS 390201075471601 CO Bd 18 1953-11-24 1953-11-24 1
USGS 390204075492301 CO Bd 57 2002-12-18 2002-12-18 1
USGS 390227075470201 CO Bd 53 1977-06-20 1977-06-20 1
USGS 390249075465401 CO Bd 34 1953-11-24 1953-11-24 1
USGS 390359075461001 CO Bd 55 1976-02-26 1976-02-26 1
USGS 390421075473001 CO Bd 54 1976-02-26 1976-02-26 1
USGS 390720075463501 CO Ad 19 2001-08-31 2001-08-31 1
  group icon Dorchester County, Maryland
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 01492050 GRAVEL RUN AT BEULAH, MD 1991-06-05 1991-06-05 1
USGS 01492080 CABIN CREEK AT CABIN CREEK, MD 1990-11-09 1991-10-23 4
USGS 01492518 WARWICK RIVER NEAR EAST NEW MARKET, MD 1984-03-27 1984-06-05 3
USGS 381551076105601 DO Fc 27 2002-10-30 2002-11-21 2
USGS 381927076135301 DO Fc 8 1965-04-28 1965-04-28 1
USGS 382316076114301 DO Ec 3 1954-02-17 1954-02-17 1
USGS 382804076172201 DO Db 4 1965-10-15 1965-10-15 1
USGS 383009076091001 DO Cd 17 1955-02-03 1955-02-03 1
USGS 383009076141301 DO Cc 55 2011-05-23 2011-05-23 4
USGS 383022076085901 DO Cd 31 1965-10-15 1965-10-15 1
USGS 383041076082601 DO Cd 28 1954-02-18 1954-02-18 1
USGS 383048076133101 DO Cc 37 1965-10-28 1965-10-28 1
USGS 383225075565002 DO Cf 36 1988-07-20 2023-08-21 7
USGS 383243076042801 DO Ce 84 1965-11-03 1974-05-09 2
USGS 383256076035301 DO Ce 85 1965-11-03 1965-11-03 1
USGS 383325076010901 DO Ce 75 1965-05-21 1965-05-21 1
USGS 383328076153601 DO Cb 7 1988-07-25 1988-07-25 2
USGS 383328076153602 DO Cb 8 1988-07-25 2023-07-17 7
USGS 383341075434701 DO Ci 3 1965-12-09 1965-12-09 1
USGS 383342076041301 DO Ce 4 1958-02-27 1958-02-27 1
USGS 383344076041201 DO Ce 86 1979-07-18 1979-07-18 1
USGS 383345076033701 DO Ce 95 2012-07-09 2022-08-25 5
USGS 383345076042901 DO Ce 1 1946-04-17 1946-04-17 1
USGS 383346076030301 DO Ce 21 1990-05-15 1990-05-15 2
USGS 383346076033901 DO Ce 82 1971-10-05 1971-10-05 1
USGS 383350076091001 DO Cd 55 2011-05-16 2011-05-16 4
USGS 383353076040601 DO Ce 2 1948-10-08 1967-08-02 4
USGS 383353076040602 DO Ce 3 1948-10-08 1965-04-02 2
USGS 383356075530301 DO Cf 34 1982-02-22 1982-05-04 2
USGS 383401076032001 DO Ce 88 1981-02-28 1981-07-31 6
USGS 383401076041701 DO Ce 6 1946-04-17 1946-04-17 2
USGS 383408076042402 DO Ce 15 1958-02-27 1958-02-27 1
USGS 383440076144701 DO Cc 54 2002-10-29 2002-11-21 2
USGS 383458076154801 DO Cb 10 2011-05-23 2011-05-23 4
USGS 383537076120201 DO Bc 5 1954-02-18 1954-02-18 1
USGS 383549075555901 DO Bf 49 2012-06-19 2012-06-19 4
USGS 383617076083001 DO Bd 10 1965-12-01 1965-12-01 1
USGS 383628075564601 DO Bf 50 2012-07-19 2012-07-19 4
USGS 383638075571101 DO Bf 20 1965-09-16 1965-09-16 1
USGS 383654075551501 DO Bf 25 1953-10-08 1953-10-08 1
USGS 383659075551901 DO Bf 27 1953-10-09 1953-10-09 1
USGS 383718075545801 DO Bg 63 1981-05-07 1983-01-19 2
USGS 383732075571301 DO Bf 40 1982-11-15 1982-11-15 1
USGS 383740075545501 DO Bg 48 1965-10-07 1965-10-07 1
USGS 383742075514801 DO Bg 72 1983-09-23 1983-09-23 1
USGS 383944075514901 DO Bg 66 1982-02-23 1982-05-04 2
USGS 383956075525001 DO Bg 69 1982-11-23 1983-07-05 2
USGS 383956075525002 DO Bg 70 1982-11-23 1983-07-05 2
USGS 383956075525003 DO Bg 71 1982-11-23 1983-07-05 2
USGS 384027075533301 DO Ag 8 1981-05-06 1982-02-10 2
USGS 384052075540201 DO Ag 5 1965-05-20 1965-05-20 1
USGS 384053075535001 DO Ag 10 1982-02-11 1982-05-04 2
USGS 384132075531101 DO Ag 7 1983-01-19 1983-01-19 1
  group icon Queen Anne'S County, Maryland
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 385534075573601 QA Ef 29 1986-06-27 1986-06-27 1
USGS 385825075580401 QA Ef 32 1998-05-01 1998-05-01 1
USGS 385833075582101 BLOCKSTON BRANCH TRIBUTARY NEAR HILLSBORO, MD 2000-05-16 2000-05-16 1
USGS 385947075584401 BLOCKSTON BRANCH TRIBUTARY NEAR CENTREVILLE, MD 2000-06-05 2000-06-05 1
USGS 390126075575401 QA Df 54 1988-07-12 2013-06-12 5
USGS 390126075575402 QA Df 55 1988-07-12 2023-08-08 7
USGS 390128075574501 QA Df 61 2001-08-09 2001-08-09 1
USGS 390235075542201 QA Dg 44 2001-08-09 2001-08-09 1
USGS 390330075545801 QA Dg 42 1998-03-26 1998-03-26 1
USGS 390443075551401 QA Df 58 1998-04-14 1998-04-14 1
USGS 390518075510001 QA Cg 62 1998-04-15 1998-04-15 1
USGS 390608075510001 QA Cg 66 2001-08-09 2001-08-09 1
USGS 390845075582301 QA Cf 77 2010-09-09 2010-09-09 3
USGS 390845075582302 QA Cf 78 2010-09-13 2010-09-13 3
USGS 390848075582501 QA Cf 79 2010-09-08 2010-09-08 3
  group icon Talbot County, Maryland
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 01491950 KINGS CREEK NEAR EASTON, MD 1991-06-11 2022-07-18 3
USGS 01492000 BEAVERDAM BRANCH AT MATTHEWS, MD 1974-02-14 1991-06-10 75
USGS 383625076000101 TA Ee 34 1965-09-23 1965-09-23 1
USGS 383712076030201 TA Ee 31 1965-09-23 1965-09-23 1
USGS 383915076044701 TA Ee 49 2011-06-01 2011-06-01 4
USGS 383933076015601 TA Ee 30 1965-09-22 1965-09-22 1
USGS 383934076033001 TA Ee 1 1954-02-09 1954-02-09 1
USGS 384010076102001 TA Dc 58 2002-11-20 2002-11-20 1
USGS 384057076102001 TA Dc 2 1954-02-05 1965-03-03 2
USGS 384058075583801 TA Df 4 1965-09-23 1965-09-23 1
USGS 384144076034602 TA De 17 1965-09-17 1965-09-17 1
USGS 384206076202901 TA Da 40 2011-06-01 2011-06-01 4
USGS 384211076023001 TA De 12 1965-09-15 1965-09-15 1
USGS 384227076195901 TA Db 38 1965-04-09 1965-04-09 1
USGS 384244076123801 TA Dc 52 1965-10-26 1965-10-26 1
USGS 384256076201001 TA Da 36 1954-02-10 1954-02-10 1
USGS 384316076054501 TA Dd 53 1965-09-24 1965-09-24 1
USGS 384338076040501 TA De 15 1965-09-17 1965-09-17 1
USGS 384440076104901 TA Dc 57 2002-11-20 2002-11-20 1
USGS 384452076011501 TA De 13 1965-09-17 1965-09-17 1
USGS 384523076033001 TA Ce 66 1965-09-14 1965-09-14 1
USGS 384602076163901 TA Cb 99 2002-11-04 2002-11-26 2
USGS 384610076161501 TA Cb 92 1965-10-26 1965-10-26 1
USGS 384613076030801 TA Ce 64 1965-09-17 1965-09-17 1
USGS 384620076052401 TA Cd 55 1985-03-21 1985-03-21 1
USGS 384629076043901 TA Ce 5 1949-03-11 1949-03-11 1
USGS 384638076043802 TA Ce 2 1948-10-07 1948-10-07 1
USGS 384638076043803 TA Ce 3 1948-10-06 1949-03-18 2
USGS 384638076043804 TA Ce 50 1965-04-01 1965-04-01 1
USGS 384644076044601 TA Ce 60 1965-04-01 1965-04-01 1
USGS 384645076044401 TA Ce 82 2012-07-16 2022-08-31 7
USGS 384649076054801 TA Cd 65 2002-11-19 2002-11-19 1
USGS 384656076061901 TA Cd 52 1965-11-22 1965-11-22 1
USGS 384717076044301 TA Ce 70 1990-01-30 2010-03-09 3
USGS 384740076040002 TA Ce 67 1965-09-16 1965-09-16 1
USGS 384815076064701 TA Cd 64 2002-11-04 2002-11-04 1
USGS 384852076014401 TA Ce 78 1998-04-23 2011-05-16 5
USGS 384931075552001 TA Cf 22 1976-10-05 1977-06-22 3
USGS 384946076002201 TA Cc 53 2002-12-10 2023-08-23 5
USGS 385023076012601 TA Be 83 1988-07-20 2001-11-07 3
USGS 385023076012602 TA Be 84 1988-07-19 1988-07-19 2
USGS 385023076013501 TA Be 102 2013-08-20 2013-08-20 3
USGS 385040075591201 TA Bf 53 1981-05-07 1981-05-07 1
USGS 385222075585201 TA Bf 38 1954-02-26 1954-02-26 1
USGS 385223075595002 TA Bf 100 2010-09-01 2010-09-01 3
USGS 385236075592701 TA Bf 78 1965-09-16 1965-09-16 1
USGS 385242075593101 TA Bf 73 1990-01-24 1990-01-24 2
USGS 385246075572301 TA Bf 14 1955-02-04 1955-02-04 1
USGS 385315075590101 TA Bf 79 1971-06-03 1971-06-03 1
USGS 385416075573001 TA Bf 9 1981-05-07 1981-05-07 1
USGS 385500075570001 TA Af 5 1954-12-21 1954-12-21 1