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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 Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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 -- 172 sites found


Hydrologic unit = 07120007
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 Dekalb County, Illinois
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 05551985 SOMONAUK CREEK AT SOMONAUK RD NR SANDWICH, IL 2000-07-25 2000-07-25 4
USGS 413805088405101 37N 5E-32.1c1 1986-09-10 1986-09-10 2
USGS 413805088405102 37N 5E-32.1c2 1986-09-10 2013-01-31 3
USGS 413836088370001 37N 5E-36.7g1 1986-09-10 1986-09-10 1
USGS 413844088370401 37N 5E-36.7h1 1930-10-13 1988-02-08 9
USGS 413844088370601 37N 5E-36.7h2 1986-09-10 1988-02-08 4
USGS 413847088392401 37N 5E-27.7a1 1986-10-15 1986-10-15 1
USGS 413848088395201 37N 5E-28.2b1 1986-10-15 1986-10-15 1
USGS 414511088461601 38N 4E-15.8d1 1985-07-30 1985-07-30 1
USGS 414515088464001 38N 4E-16.2d1 1985-07-30 1985-07-30 1
USGS 414606088383701 38N 5E-15.2d1 1986-09-24 1986-09-24 1
USGS 414608088375201 38N 5E-14.4d1 1922-03-07 2017-05-30 11
  group icon Dupage County, Illinois
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 414501088140601 38N 9E-29.5f1 1986-09-29 1986-09-29 1
USGS 414617088085801 38N 9E-13.2b2 1958-01-01 1988-02-04 17
USGS 414756088115901 38N 9E- 3.6a1 1988-02-04 1988-02-04 1
USGS 415236088134801 39N 9E- 8.3d1 2013-05-13 2013-05-13 1
USGS 415307088123001 39N 9E- 4.1a1 1922-04-17 1964-11-01 6
USGS 415544088145901 40N9E-19.3a 2013-07-15 2013-07-15 1
USGS 415826088103401 40N 9E-11.6h1 1986-07-07 1986-07-07 1
  group icon Kane County, Illinois
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 05551000 FOX RIVER AT SOUTH ELGIN, IL 1977-11-10 1997-05-28 450
USGS 05551029 BREWSTER CREEK NEAR VALLEY VIEW, IL 2002-08-28 2007-03-09 101
USGS 05551030 BREWSTER CREEK AT VALLEY VIEW, IL 2002-07-22 2007-03-22 127
USGS 05551200 FERSON CREEK NEAR ST. CHARLES, IL 1974-10-07 2000-07-27 98
USGS 05551340 MILL CREEK AT MOOSEHEART, IL 2000-07-10 2000-07-27 4
USGS 05551540 FOX RIVER AT MONTGOMERY, IL 1977-12-12 2021-12-14 286
USGS 05551931 BIG ROCK C AT JERICHO ROAD NEAR SUGAR GROVE, IL 2000-07-24 2000-07-24 4
USGS 414337088201301 38N 8E-33.7c1 1957-11-01 1986-10-21 6
USGS 414338088185501 38N 8E-34.6b1 1975-07-15 1986-10-21 7
USGS 414343088204001 38N 8E-32.3c1 1986-10-21 1987-11-03 3
USGS 414346088191001 38N 8E-34.8d2 1986-09-24 1986-09-24 1
USGS 414346088191101 38N 8E-34.8d1 1986-09-24 1986-09-24 1
USGS 414356088183101 38N 8E-34.4e1 1986-09-24 1986-09-24 1
USGS 414402088205101 38N 8E-32.4f1 1972-01-21 1987-03-11 7
USGS 414407088190501 38N 8E-34.8g1 1959-04-29 1986-08-20 2
USGS 414411088170401 38N 8E-35.2g1 1986-11-10 1986-11-10 2
USGS 414419088184201 38N 8E-27.2a1 1941-08-22 1941-08-22 1
USGS 414421088171301 38N 8E-26.3a2 1986-09-24 1986-09-24 1
USGS 414423088171501 38N 8E-26.3a1 1986-09-24 1986-09-24 1
USGS 414423088230801 38N 7E-25.5b1 1981-02-25 1986-08-21 3
USGS 414444088194801 38N 8E-28.4e1 1946-10-19 1946-10-19 1
USGS 414503088164801 38N 8E-25.8g2 1985-06-11 1985-06-11 1
USGS 414507088203201 38N 8E-29.2h1 1968-01-01 1986-08-20 4
USGS 414508088220801 38N 8E-19.5a1 1967-11-01 1986-09-29 6
USGS 414529088264301 38N 7E-21.5e1 1984-04-23 1992-10-13 8
USGS 414529088264302 38N 7E-21.5e2 1986-01-30 2000-10-24 9
USGS 414529088291901 38N 7E-19.7e1 1987-11-09 1987-11-09 1
USGS 414531088162601 38N 8E-24.5c1 1986-09-30 1986-09-30 1
USGS 414531088164201 38N 8E-24.7c1 1967-11-01 1986-08-20 6
USGS 414539088162601 38N 8E-24.5e1 1986-09-30 1986-09-30 1
USGS 414542088161701 38N 8E-24.4e1 1986-09-30 1986-09-30 2
USGS 414554088195601 38N 8E-21.5g1 1930-11-01 1943-02-01 3
USGS 414556088231801 38N 7E-24.6h1 1972-07-06 1986-08-21 6
USGS 414558088174601 38N 8E-23.7h1 1930-11-01 1943-05-15 4
USGS 414604088162401 38N 8E-24.5h1 1986-09-24 1986-09-24 1
USGS 414610088171501 38N 8E-14.3a1 1986-09-10 1986-09-10 1
USGS 414611088171801 38N 8E-14.3a2 1986-09-10 1986-09-10 1
USGS 414614088171701 38N 8E-14.3b1 1986-09-12 1986-09-12 2
USGS 414617088171201 38N 8E-14.3c2 1986-09-12 1986-09-12 1
USGS 414619088171601 38N 8E-14.3c1 1986-09-12 1986-09-12 1
USGS 414622088194401 38N 8E-16.4d1 1958-11-01 1987-03-18 7
USGS 414646088183501 38N 8E-15.4g2 1915-07-01 1959-05-01 6
USGS 414647088183401 38N 8E-15.4g3 1933-10-01 1982-04-08 3
USGS 414648088183801 38N 8E-15.4h1 1942-03-02 1942-03-02 1
USGS 414653088192901 38N 8E-15.3h1 1935-10-01 1976-06-10 14
USGS 414702088250501 38N 7E-10.2b1 1985-10-17 1985-10-17 1
USGS 414720088204901 38N 8E- 8.3e1 1974-08-14 1986-09-29 8
USGS 414759088202401 38N 8E- 4.8d1 1968-07-01 1986-08-22 7
USGS 414804088160301 38N 8E- 1.2c1 1967-11-01 1986-08-20 5
USGS 414823088192301 38N 8E- 4.1f1 1955-04-01 1982-05-10 5
USGS 414825088191101 38N 8E- 3.8d1 1902-10-28 1902-10-28 1
USGS 414829088184901 38N 8E- 3.6g1 1986-08-22 1986-08-22 1
USGS 414830088191401 38N8E-3.8f1 1938-09-07 1947-08-12 3
USGS 414830088193701 38N 8E- 4.3g1 1960-06-01 1986-08-22 6
USGS 414922088195001 39N 8E-33.4g1 1957-10-08 1957-10-08 1
USGS 414922088195101 39N 8E-33.5g1 1986-09-10 1986-09-10 1
USGS 414948088195301 39N 8E-33.5g2 1986-09-10 1986-09-10 1
USGS 415019088174301 39N 8E-26.6h1 1986-08-26 2017-06-26 6
USGS 415054088182801 39N 8E-22.3e2 1947-08-13 1986-08-26 2
USGS 415058088182901 39N 8E-22.3e1 1920-07-01 1986-08-26 7
USGS 415058088183001 39N 8E-22.7f1 1901-01-02 1901-01-02 1
USGS 415102088180101 39N 8E-23.8f1 1953-05-01 2013-01-29 5
USGS 415222088190301 38N 8E-22.4e1 1941-08-22 1988-01-18 7
USGS 415238088175101 39N 8E-11.7e1 1972-02-28 1986-08-29 2
USGS 415238088252601 39N 7E-10.4f1 1986-09-30 1986-09-30 1
USGS 415252088251001 39N 7E-10.3h1 1986-09-30 1986-09-30 1
USGS 415257088202001 39N 8E- 9.8h 1964-07-01 1992-12-01 22
USGS 415312088182601 39N 8E- 3.1b1 1928-03-12 1986-08-29 9
USGS 415313088181301 39N 8E- 3.1e1 1918-01-30 1939-01-11 2
USGS 415313088182101 39N 8E- 3.1b2 1948-09-28 1948-09-28 1
USGS 415319088172701 39N 8E- 2.4c1 1972-01-18 1986-08-29 3
USGS 415330088281701 39N 7E- 5.8f1 1917-09-11 1986-06-27 5
USGS 415331088280801 39N 7E- 5.7f1 2014-08-25 2014-08-25 3
USGS 415335088281701 39N 7E- 5.8f2 1985-10-07 1986-10-16 2
USGS 415343088191001 39N 8E- 3.8g1 1942-09-01 1986-08-29 2
USGS 415357088281501 40N 7E-32.8b1 1971-07-28 1986-06-27 5
USGS 415425088185401 40N 8E-34.6e1 1948-05-01 1986-09-26 11
USGS 415426088222001 40N 8E-31.7f1 1970-01-01 1987-03-11 7
USGS 415427088185601 40N 8E-34.4f1 1958-06-01 1975-10-09 2
USGS 415438088265401 40N7E-28.7a 2012-09-06 2013-07-12 4
USGS 415450088202201 40N 8E-28.8a1 1985-11-13 1985-11-13 1
USGS 415451088161801 40N 8E-25.4a1 1986-09-26 1986-09-26 2
USGS 415451088184601 40N 8E-27.5a1 1921-06-22 1986-09-26 9
USGS 415457088184801 40N 8E-27.6b1 1936-10-15 1986-09-26 7
USGS 415635088182201 40N 8E-15.2a1 1984-04-24 1985-02-21 4
USGS 415636088182901 40N 8E-15.4a1 1986-11-07 1986-11-07 1
USGS 415642088263101 40N 7E-16.3c1 1986-03-13 1986-03-13 1
USGS 415642088263102 40N 7E-16.4c1 1986-03-13 1986-03-13 1
USGS 415650088265101 40N 7E-16.6e1 1974-03-11 1974-04-05 2
USGS 415734088175001 40N 8E-11.7b1 1985-10-17 1986-10-16 2
USGS 415734088175301 40N 8E-11.7b2 1985-10-17 1985-10-17 1
USGS 415741088192201 40N 8E- 9.1c1 1986-03-14 1986-03-14 1
USGS 415752088244001 40N7E-11.6f 1999-09-02 2021-05-03 19
USGS 415924088171701 41N 8E-35.3c1 1985-10-07 1986-10-15 2
USGS 415950088180301 41N 8E-35.8g1 1938-04-15 1947-08-01 5
USGS 420000088181301 41N 8E-34.1h1 1986-01-31 1986-01-31 1
USGS 420012088191101 41N8E-27.7b 2000-05-11 2021-05-03 12
USGS 420028088192601 41N 8E-28.1e1 1986-10-17 1986-10-17 1
USGS 420032088171601 41N 8E-26.3e1 1986-01-31 1991-03-27 3
USGS 420104088174301 41N 8E-23.6b1 1976-03-01 1976-03-01 1
USGS 420201088201001 41N 8E-16.7c1 1987-01-30 1987-01-30 1
USGS 420203088195301 41N 8E-16.4c1 1963-07-01 1987-01-27 4
USGS 420204088193101 41N 8E-16.2d1 1972-05-16 1987-01-29 9
USGS 420205088194501 41N 8E-16.4d1 1964-02-01 1987-01-28 8
USGS 420210088195201 41N 8E-16.4d2 1967-09-01 1980-12-04 5
  group icon Kendall County, Illinois
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 05551548 WAUBANSEE CREEK AT OSWEGO, IL 2000-07-21 2000-07-21 4
USGS 05551580 FOX RIVER AT YORKVILLE, IL 2013-08-02 2016-04-11 13
USGS 05551695 BLACKBERRY C AT BRISTOL RIDGE RD NR BRISTOL, IL 2000-07-24 2000-07-24 4
USGS 05551700 BLACKBERRY CREEK NEAR YORKVILLE, IL 1974-10-08 2021-12-14 333
USGS 05551933 BIG ROCK CREEK ABOVE HENNING ROAD NEAR PLANO, IL 1990-07-24 1990-07-24 17
USGS 05551937 BIG ROCK CREEK AT FOX RIVER ROAD NEAR PLANO, IL 1988-07-29 1988-07-29 8
USGS 05551939 LITTLE ROCK CREEK NEAR PLANO, IL 2000-07-26 2000-07-26 4
USGS 413152088342801 35N 6E- 5.6a1 1987-04-20 1994-08-02 2
USGS 413220088350601 35N 6E- 6.2f1 1987-04-20 2013-10-01 2
USGS 413830088265201 37N 7E-32.1e1 1987-04-23 2014-08-18 4
USGS 413847088214801 37N 7E-35.4g1 1980-08-27 1980-08-27 1
USGS 413900088264801 37N 7E-28.8b1 1987-04-23 1987-04-23 1
USGS 413948088352501 37N 6E-19.5b1 1985-09-18 1985-09-18 1
USGS 413957088313001 37N 6E-23.8c2 1986-01-29 2000-10-24 8
USGS 413958088313501 37N 6E-23.8c1 1986-01-29 1988-02-18 5
USGS 413959088312801 37N 6E-23.8d2 1986-08-28 1986-08-28 1
USGS 414000088313301 37N 6E-23.8d3 1986-01-29 1986-01-29 1
USGS 414041088211901 37N 8E-20.8h1 1987-04-20 1987-04-20 1
USGS 414113088202401 37N 8E-17.2e1 1987-04-20 1987-04-20 1
USGS 414222088211801 37N 8E- 8.7h2 1985-09-18 1985-09-18 1
USGS 414223088214201 37N 8E- 7.1h1 1987-04-22 1987-04-22 1
  group icon Lasalle County, Illinois
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 05551995 SOMONAUK CREEK AT SHERIDAN, IL 1979-07-09 1997-04-08 165
USGS 05552190 INDIAN C BELOW SHABBONA COUNTY PARK NR HARDING, IL 2000-07-25 2000-07-25 4
USGS 05552200 INDIAN CREEK NEAR HARDING, IL 1989-07-24 1990-07-29 44
USGS 05552350 CROOKEDLEG CREEK AT WEDRON, IL 2004-08-25 2004-09-21 2
USGS 05552400 INDIAN CREEK AT ROUTE 258 AT WEDRON, IL 1988-07-28 1988-08-11 157
USGS 05552450 BUCK CREEK NEAR WEDRON, IL 2000-07-25 2000-07-25 4
USGS 05552500 FOX RIVER AT DAYTON, IL 1974-10-08 2009-09-28 1510
USGS 05553000 FOX RIVER AT OTTAWA, IL 1979-07-31 2021-12-14 109
USGS 412059088495201 FOX RIVER AT FOX RIVER PARK AT OTTAWA, IL 2023-04-02 2023-07-15 2
USGS 412120088500401 33N 3E- 1.8a1 1984-06-15 1992-10-19 9
USGS 412120088503701 33N 3E- 2.4a1 1987-04-08 1987-04-08 1
USGS 412133088495901 33N 3E- 1.7c1 1987-04-08 1987-04-08 2
USGS 412952088402201 35N 5E-21.7g1 1987-06-16 1987-06-16 1
USGS 413048088413001 35N 5E-17.7h1 1987-06-16 1987-06-16 1
USGS 413100088412001 35N 5E- 8.6b1 1987-06-16 1987-06-16 1
USGS 413141088402401 35N5E-9.7h 1999-05-05 2012-08-08 10
USGS 413528088552101 36N 3E-18.4d1 1987-04-06 2013-09-17 3
USGS 413528088552102 36N 3E-18.4d2 1987-04-06 1987-04-06 1
USGS 413651088411901 36N 5E- 8.4g1 1987-06-03 1987-06-03 1
USGS 413651088412101 36N 5E- 8.5g1 1987-06-03 1987-06-03 1
USGS 413654088475601 36N 4E- 8.4h1 1987-04-14 2013-10-29 6
USGS 413654088475602 36N 4E- 8.4h2 1987-04-14 1987-04-14 1
USGS 413705088390501 36N 5E- 3.5a1 1987-04-28 1987-04-28 1
USGS 413713088385801 36N 5E- 3.4b1 1987-04-28 1987-04-28 1
USGS 413715088385801 36N 5E- 3.4c1 1987-04-28 1987-04-28 1
USGS 413735088395001 36N 5E- 4.2f1 1987-06-03 1987-06-03 1
  group icon Lee County, Illinois
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 414122088585401 37N 2E-10.1c1 1987-02-11 2013-07-01 3