Warning: Javascript must be enabled to use all the features on this page!


Page Loading - Please Wait...

Click to hideNews Bulletins

Water Quality Samples for USA
Grouped by County

Some complex retrievals may take a few minutes.

Site Selection Results -- 503 sites found


Hydrologic unit = 02060006
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 Anne Arundel County, Maryland
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 01594410 LITTLE PATUXENT RIVER AT FORT MEADE, MD 1963-06-27 1964-04-13 26
USGS 01594416 MIDWAY BRANCH NEAR JESSUP, MD 2021-08-31 2021-11-04 78
USGS 01594417 MIDWAY BRANCH NEAR ODENTON, MD 2021-08-31 2021-11-04 94
USGS 01594440 PATUXENT RIVER NEAR BOWIE, MD 1977-10-07 2022-11-13 1394
USGS 01594464 ROCK CREEK NEAR BAYARD, MD 1994-09-21 1995-08-03 2
USGS 01594475 WILSON OWENS BRANCH AT DRURY, MD 1994-09-20 1995-08-03 2
USGS 01594480 PATUXENT RIVER NEAR DRURY, MD 1982-06-21 1983-11-02 319
USGS 01594530 PATUXENT RIVER NEAR BRISTOL, MD 1982-06-20 1983-11-03 277
USGS 01594542 LYONS CREEK NEAR TRACYS LANDING, MD 1994-09-16 1995-08-04 2
USGS 01594544 CABIN BRANCH AT LYONS CREEK, MD 1994-09-21 1994-09-21 1
USGS 01594545 LYONS CREEK AT LYONS CREEK, MD 1994-09-16 1995-08-04 2
USGS 384649076354001 AA Fd 12 1960-05-27 1960-05-27 1
USGS 384703076421001 AA Fc 32 2000-08-01 2000-08-01 1
USGS 384709076420501 AA Fc 4 1946-07-12 1946-07-12 1
USGS 384757076380901 AA Fd 54 1997-11-03 1997-11-03 1
USGS 384821076411201 GALLOWAY CREEK NEAR WAYSONS CORNER, MD 2000-03-31 2000-03-31 1
USGS 384833076415601 AA Fc 34 2000-10-06 2000-10-06 1
USGS 384833076415602 AA Fc 35 2000-10-04 2016-12-28 4
USGS 384842076420801 AA Fc 1 1952-03-31 1952-03-31 1
USGS 384910076383301 AA Fd 60 2000-08-23 2000-08-23 1
USGS 384946076365901 AA Fd 16 1952-03-31 1952-03-31 1
USGS 385009076353601 AA Ed 58 2000-08-16 2000-08-16 1
USGS 385125076404801 AA Ec 12 2012-07-30 2012-07-30 4
USGS 385150076380501 AA Ed 56 1997-10-27 1997-10-27 1
USGS 385157076370001 AA Ed 59 2000-08-01 2000-08-01 1
USGS 385227076390701 AA Ed 8 1946-06-28 1946-06-28 1
USGS 385232076394601 AA Ed 62 2000-08-16 2000-08-16 1
USGS 385350076380701 AA Ed 54 1997-11-13 1997-11-13 1
USGS 385353076350201 AA Ed 60 2000-08-01 2000-08-01 1
USGS 385406076383901 AA Ed 45 1979-08-15 1979-08-15 1
USGS 385406076383902 AA Ed 65 2000-10-10 2000-10-10 1
USGS 385431076401101 AA Ec 2 1958-02-28 1958-02-28 1
USGS 385438076381901 AA Ed 16 1950-03-27 1950-03-27 1
USGS 385444076402101 AA Ec 22 2016-11-30 2016-11-30 3
USGS 385500076402701 AA Ec 11 1997-10-23 1998-06-29 2
USGS 385531076391301 AA Dd 61 2000-08-01 2000-08-01 1
USGS 385543076403801 AA Dc 24 2016-11-22 2016-11-22 3
USGS 385543076404701 UNNAMED TRIBUTARY TO PATUXENT RIVER NEAR BOWIE, MD 2000-03-27 2000-03-27 1
USGS 385601076390901 AA Dd 51 1997-09-30 1997-09-30 1
USGS 385702076400101 AA Dd 52 1997-09-17 1997-09-17 1
USGS 385800076410301 AA Dc 13 1960-08-11 1960-08-17 2
USGS 385800076410401 AA Dc 7 1952-03-31 1960-06-08 4
USGS 385916076402502 AA Dc 23 2016-11-15 2016-11-15 3
USGS 385927076401201 AA Dc 9 1960-03-02 1960-03-02 1
USGS 385929076401301 AA Dc 10 1960-03-02 1960-03-02 1
USGS 385930076401301 AA Dc 18 1997-12-10 1997-12-10 1
USGS 385944076401001 AA Dc 19 1998-11-16 1998-11-16 1
USGS 390047076404901 AA Cc 107 1974-07-12 1974-07-12 1
USGS 390100076403201 AA Cc 105 1973-07-08 1973-07-08 1
USGS 390103076402601 AA Cc 115 1979-07-19 1979-07-19 1
USGS 390103076402602 AA Cc 116 1979-07-24 1979-07-24 1
USGS 390103076402603 AA Cc 117 1979-07-26 2006-12-18 2
USGS 390118076415001 AA Cc 142 1998-07-06 1998-07-06 1
USGS 390122076423801 AA Cc 133 1997-09-16 1997-09-16 1
USGS 390127076424801 AA Cc 15 1946-05-06 1946-05-06 1
USGS 390128076412401 AA Cc 134 1997-10-23 1997-10-23 1
USGS 390136076424501 AA Cc 141 1998-06-16 1998-06-16 1
USGS 390145076432401 AA Cc 143 1998-10-28 1998-10-28 1
USGS 390235076431201 AA Cc 13 1952-03-31 1952-03-31 1
USGS 390246076450101 AA Cb 2 1959-12-14 1959-12-14 1
USGS 390247076403501 AA Cc 95 1975-09-17 1975-09-17 1
USGS 390254076413001 AA Cc 114 1976-10-28 1976-10-28 2
USGS 390303076463201 AA Cb 1 1959-09-15 1959-09-15 1
USGS 390308076441101 AA Cc 7 1946-04-23 1946-04-23 1
USGS 390310076415401 AA Cc 12 1946-05-01 1946-05-01 1
USGS 390313076454701 MD-PWRC 148I-1 2021-05-11 2021-05-11 1
USGS 390407076492201 MD-PWRC 1I-1 2021-05-11 2021-06-07 2
USGS 390407076495301 PATUXENT R. AT BALT.-WASH. PARKWAY 1976-08-12 1976-08-26 3
USGS 390413076405301 AA Cc 23 1960-05-27 1960-05-27 1
USGS 390413076462301 WVA 1, MD 2001-03-09 2001-03-09 1
USGS 390413076462302 WVA 3, MD 2001-03-09 2001-03-09 1
USGS 390413076482001 MD-PWRC 46I-1 2021-05-11 2021-06-07 2
USGS 390414076462201 WVA 2, MD 2001-03-09 2001-03-09 1
USGS 390418076495701 AA Ca 1 1998-11-09 1998-11-09 1
USGS 390419076431901 AA Cc 123 1985-02-21 1998-11-04 2
USGS 390422076414501 AA Cc 43 1960-03-09 1960-03-09 1
USGS 390422076414801 AA Cc 78 1962-01-15 1962-01-25 2
USGS 390429076472001 BLUE ROAD VP, MD 2001-03-09 2005-03-14 5
USGS 390433076492001 MD-PWRC 2I-2 2021-05-11 2021-05-11 1
USGS 390437076432301 AA Cc 118 1982-05-20 1982-05-20 1
USGS 390440076482401 RED ROAD VP, MD 2001-03-09 2005-03-14 5
USGS 390446076464101 CEMETERY STREAM, MD 2001-08-22 2004-06-09 5
USGS 390457076432501 AA Cc 120 1984-10-12 1984-10-12 1
USGS 390502076462601 MD-PWRC 116C 2021-05-11 2021-05-11 1
USGS 390509076465101 MD-PWRC 102I-5 2021-05-11 2021-05-11 1
USGS 390512076434501 AA Bc 234 1984-10-18 1984-10-18 1
USGS 390516076462901 MD-PWRC 115C 2021-05-11 2021-06-07 2
USGS 390524076442501 AA Bc 163 1998-11-04 1998-11-04 1
USGS 390525076462701 AA Cb 5 1998-06-08 1998-06-08 1
USGS 390526076465801 AA Bb 55 1958-03-19 1958-03-19 1
USGS 390538076453002 AA Bb 68 1978-06-07 1978-06-07 1
USGS 390548076500901 PATUXENT R. AT RTE 198 1976-08-12 1976-08-26 2
USGS 390604076470601 AA Bb 5 1952-03-31 1952-03-31 1
USGS 390606076494001 AA Bb 22 1960-03-09 1998-06-08 2
USGS 390621076503001 PATUXENT R. AT RTE 1 1976-08-12 1976-08-26 2
USGS 390640076511301 PATUXENT RIVER AT RTE 216 1976-08-12 1976-08-12 1
USGS 390645076492401 AA Bb 89 1998-11-09 1998-11-09 1
USGS 390655076464001 BW Parkway, MD 2003-09-12 2003-09-12 1
USGS 390657076462601 AA Bb 90 2009-06-29 2016-11-21 4
USGS 390657076462602 AA Bb 91 2009-06-30 2016-11-22 4
USGS 390725076471502 AA Bb 19 1946-03-29 1946-03-29 1
USGS 390756076464201 AA Bb 88 2009-05-28 2009-05-28 1
USGS 390756076464202 AA Bb 92 2009-05-21 2009-05-21 1
USGS 390815076444801 AA Bc 248 1998-11-18 1998-11-18 1
USGS 390826076454801 AA Bb 86 2009-05-19 2009-05-19 1
USGS 390826076454802 AA Bb 87 2009-05-14 2009-05-14 1
USGS 390827076451101 AA Bb 38 1960-02-26 1960-02-26 1
  group icon Calvert County, Maryland
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 01594563 HALL CREEK AT DUNKIRK, MD 1994-09-21 1995-08-03 2
USGS 01594580 PATUXENT RIVER AT LOWER MARLBORO MD 1982-06-17 1983-11-02 435
USGS 01594590 CHEW CREEK NEAR LOWER MARLBORO, MD 1994-09-21 1995-08-04 2
USGS 01594600 COCKTOWN CREEK NEAR HUNTINGTOWN, MD 1974-10-31 1976-09-16 12
USGS 01594665 HUNTING CREEK NEAR PARRAN, MD 1994-11-08 1995-08-10 2
USGS 01594670 HUNTING CREEK NEAR HUNTINGTOWN, MD 1985-10-17 1998-01-24 350
USGS 01594675 AGRICULTURAL RUNOFF SITE NEAR HUNTINGTOWN, MD 1986-07-16 1989-05-06 16
USGS 01594680 MILL CREEK TRIBUTARY AT PRINCE FREDERICK, MD 1986-08-28 1989-02-01 8
USGS 01594689 SCHOOLHOUSE BRANCH AT BENEDICT, MD 1994-10-04 1995-08-10 2
USGS 01594690 PATUXENT RIVER NEAR BENEDICT, MD 1982-03-29 1983-11-03 439
USGS 01594705 AGRICULTURAL RUNOFF SITE AT BARSTOW, MD 1989-02-21 1990-10-23 49
USGS 01594730 PATUXENT RIVER NEAR GOLDEN BEACH, MD 1982-05-06 1983-10-25 207
USGS 01594732 PATUXENT RIVER BELOW GOLDEN BEACH, MD 1982-03-25 1983-11-04 420
USGS 01594738 BATTLE CREEK NEAR BARSTOW, MD 1994-10-04 1995-08-08 2
USGS 01594740 BATTLE CREEK TRIBUTARY NEAR MUTUAL, MD 1994-10-04 1995-08-08 2
USGS 01594770 ISLAND CREEK AT ISLAND CREEK, MD 1994-10-04 1995-08-08 2
USGS 01594795 SAINT LEONARD CREEK AT SAINT LEONARD, MD 1994-11-08 1995-08-08 2
USGS 01594812 HELLEN CREEK NEAR LUSBY, MD 1994-09-15 1995-08-08 2
USGS 01594814 HELLEN CREEK AT APPEAL, MD 1994-09-15 1994-09-15 1
USGS 01594820 PATUXENT RIVER NEAR TOWN POINT, MD HILL, MD 1982-03-22 1983-11-01 417
USGS 01594828 MILL CREEK TRIBUTARY NEAR CHERRY HILL, MD 1994-11-08 1995-08-08 2
USGS 01594830 PATUXENT RIVER AT SOLOMONS, MD 1963-10-04 1964-05-05 12
USGS 381944076271401 CA Gd 4 1947-01-13 1947-01-13 1
USGS 381955076285401 CA Gd 36 1952-06-18 1956-06-15 4
USGS 381957076254801 CA Gd 62 2011-06-20 2011-06-20 4
USGS 382007076281701 CA Fd 1 1952-06-24 1956-06-15 3
USGS 382032076250701 CA Fd 87 2002-12-10 2002-12-10 1
USGS 382205076281701 CA Fd 3 1947-01-13 1947-01-13 1
USGS 382231076260001 CA Fd 71 1993-05-10 1993-05-10 1
USGS 382233076243301 CA Fe 27 1980-08-07 1980-08-07 1
USGS 382337076303701 CA Fc 19 1986-10-02 1991-08-27 37
USGS 382337076303702 CA Fc 20 1986-10-02 1992-01-27 43
USGS 382338076304301 South seep 1994-03-31 1994-03-31 1
USGS 382339076304201 CA Fc 33 1989-03-09 1993-10-25 34
USGS 382339076304202 CA Fc 34 1989-05-17 1995-08-09 44
USGS 382339076304203 CA Fc 35 1991-08-28 1991-08-28 1
USGS 382339076304301 Center Seep, Patterson Park Shore 1994-03-31 1994-03-31 1
USGS 382339076304302 Patuxent River at Patterson Park 1994-03-31 1994-03-31 1
USGS 382340076303001 CA Fc 15 1986-08-06 1993-02-25 50
USGS 382340076303002 CA Fc 16 1986-08-06 1995-08-09 86
USGS 382340076303201 CA Fc 22 1986-08-06 1991-08-27 41
USGS 382340076303401 CA Fc 28 1987-07-09 1995-08-10 59
USGS 382340076303402 CA Fc 29 1987-07-09 1995-06-28 54
USGS 382340076303403 CA Fc 30 1987-07-09 1995-08-10 69
USGS 382340076303801 CA Fc 18 1986-08-05 1995-08-09 91
USGS 382340076303802 CA Fc 31 1989-02-02 1995-04-27 37
USGS 382340076303803 CA Fc 32 1989-02-02 1995-08-10 49
USGS 382340076304301 North seep 1993-03-31 1994-03-31 2
USGS 382342076303401 CA Fc 21 1986-08-06 1991-08-27 43
USGS 382343076302901 CA Fc 13 1986-08-05 2002-10-09 100
USGS 382343076302902 CA Fc 14 1965-05-02 1992-06-24 24
USGS 382343076303801 CA Fc 17 1986-10-02 1992-01-27 44
USGS 382443076324501 CA Fc 2 1967-05-05 1967-05-05 1
USGS 382446076325601 CA Fc 6 1967-05-05 1967-05-05 1
USGS 382528076280501 CA Ed 56 2012-08-01 2012-08-01 4
USGS 382538076291201 CA Ed 14 1967-05-09 1967-05-09 1
USGS 382638076295901 CA Ed 53 2002-12-02 2002-12-02 1
USGS 382732076355801 CA Eb 20 1980-08-08 1980-08-08 1
USGS 382737076323701 CA Ec 24 1967-05-05 1967-05-05 1
USGS 382819076302201 CA Ec 3 1949-03-23 1949-03-23 1
USGS 382840076324801 CA Ec 4 1949-03-23 1949-03-23 1
USGS 382940076371601 CA Eb 9 1967-05-05 1967-05-05 1
USGS 383109076391301 CA Db 3 1950-03-27 1950-03-27 1
USGS 383114076365001 CA Db 57 1980-08-08 1980-08-08 1
USGS 383121076370601 CA Db 6 1950-03-27 1950-03-27 1
USGS 383216076351402 CA Db 66 1986-08-27 1989-03-01 9
USGS 383216076351403 CA Db 67 1986-08-27 1987-12-14 5
USGS 383217076351701 CA Db 71 1986-08-27 1986-08-27 1
USGS 383217076351703 CA Db 73 1986-08-27 1989-03-01 13
USGS 383217076351704 CA Db 85 1987-09-02 1989-03-01 7
USGS 383217076351802 CA Db 69 1986-08-28 1989-03-01 10
USGS 383217076351803 CA Db 70 1986-12-16 1987-12-14 3
USGS 383218076351701 CA Db 74 1988-04-20 1988-04-20 1
USGS 383218076351702 PRECIPITATION AT PRINCE FREDERICK, MD 1987-09-09 1987-12-11 2
USGS 383218076351703 CA Db 84 1987-09-02 1989-03-01 6
USGS 383239076354201 CA Db 47 1979-07-25 1979-07-25 1
USGS 383244076354201 CA Db 96 2002-12-11 2003-02-04 2
USGS 383323076371201 CA Db 93 2002-12-02 2002-12-02 1
USGS 383416076402201 CA Da 3 1967-05-02 1967-05-02 1
USGS 383704076402301 PATUXENT R NR HOLLAND CLIFF,MD 1982-03-30 1982-03-30 12
USGS 383728076402501 CA Ca 8 1967-05-02 1967-05-02 1
USGS 383734076401901 CA Ca 2 1950-03-27 1954-05-19 3
USGS 383837076381001 CA Cb 26 1980-08-28 1980-08-28 1
USGS 383931076405301 CA Ca 10 1980-08-28 1980-08-28 1
USGS 383935076362801 CA Cb 11 1958-02-27 1958-02-27 1
USGS 383949076361001 CA Cb 18 1967-05-02 1967-05-02 1
USGS 383950076402801 CA Ca 9 1980-08-28 1980-08-28 1
USGS 384013076355901 CA Bb 12 1958-02-27 1958-02-27 1
USGS 384028076354201 CA Bb 10 1952-04-01 1958-02-27 2
USGS 384045076374301 CA Bb 6 1950-03-27 1950-03-27 1
USGS 384154076362401 CA Bb 18 1967-05-01 1967-05-01 1
USGS 384222076380101 CA Bb 33 1980-08-28 1980-08-28 1
USGS 384230076373501 CA Bb 13 1960-02-25 1960-02-27 2
USGS 384322076394001 CA Bb 1 1947-01-13 1947-01-13 1
USGS 384333076394701 CA Bb 27 1979-08-03 2016-12-12 4
USGS 384333076394702 CA Bb 28 1980-06-27 2016-12-13 4
USGS 384401076404902 CA Ba 8 2012-08-13 2012-08-13 4
USGS 384407076373701 CA Bb 9 1952-04-30 1952-04-30 1
USGS 384417076390801 CA Bb 16 1967-05-01 1967-05-01 1
  group icon Charles County, Maryland
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 01594684 SWANSON CREEK NEAR AQUASCO, MD 1994-10-19 1995-08-11 2
USGS 01594688 SWANSON CREEK NEAR PATUXENT, MD 1994-10-19 1995-08-10 2
USGS 01594700 PATUXENT RIVER AT PATUXENT RIVER BRIDGE, MD 1963-06-28 1964-04-13 20
USGS 383013076405101 CH Ch 7 1961-03-09 1961-03-09 1
USGS 383051076404101 CH Ch 14 1981-03-10 1981-03-10 1
USGS 383120076451401 CH Cg 18 1975-01-30 1975-01-30 1
USGS 383200076471001 CH Cg 1 1946-10-28 1946-10-28 1
USGS 383357076464201 CH Cg 15 1966-11-01 1966-11-01 1
  group icon Howard County, Maryland
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 01590800 PATUXENT RIVER AT MULLINIX, MD 1988-12-20 1989-10-06 3
USGS 01590900 CABIN BRANCH NEAR FLORENCE, MD 1988-12-20 1989-10-13 3
USGS 01591200 CATTAIL CREEK TRIBUTARY AT CARRS MILL, MD 1988-12-20 1989-10-13 3
USGS 01591210 CATTAIL CREEK AT CARRS MILL, MD 1994-08-10 1994-08-10 1
USGS 01591350 CATTAIL CREEK NEAR COOKSVILLE, MD 1977-10-05 1989-10-16 29
USGS 01591375 CATTAIL CREEK TRIBUTARY AT DAISY, MD 1988-12-20 1989-10-13 3
USGS 01591380 CATTAIL CREEK AT DAISY, MD 1994-09-13 1994-09-13 1
USGS 01591400 CATTAIL CREEK NEAR GLENWOOD, MD 1979-11-19 1995-08-16 57
USGS 01591475 DORSEY BRANCH NEAR KNOLLWOOD, MD 1988-12-20 1989-10-13 3
USGS 01591510 PATUXENT RIVER TRIBUTARY NEAR DAYTON, MD 1986-05-13 1992-06-26 97
USGS 01591850 PATUXENT RIVER NEAR ASHTON, MD 1994-08-11 1994-08-11 1
USGS 01593190 LITTLE PATUXENT RIVER NEAR WEST FRIENDSHIP, MD 1994-08-10 1994-08-10 1
USGS 01593200 LITTLE PATUXENT RIVER AT PINE ORCHARD, MD 1988-12-19 1989-10-16 3
USGS 01593300 RED HILL BRANCH NEAR COLUMBIA, MD 1988-12-19 1989-10-16 3
USGS 01593500 LITTLE PATUXENT RIVER AT GUILFORD, MD 1974-10-16 1995-08-14 92
USGS 01593600 MIDDLE PATUXENT RIVER NEAR WEST FRIENDSHIP, MD 1988-05-23 1994-08-10 6
USGS 01593655 AGRICULTURAL RUNOFF SITE NEAR CLARKSVILLE, MD 1987-10-27 1993-11-27 174
USGS 01593675 MIDDLE PATUXENT RIVER TRIBUTARY NEAR COLUMBIA, MD 1988-12-19 1989-09-12 3
USGS 01593677 MIDDLE PATUXENT RIVER NEAR COLUMBIA, MD 1994-09-13 1994-09-13 1
USGS 01593700 MIDDLE PATUXENT RIVER TRIB. NEAR CLARKSVILLE, MD 1988-12-19 1989-10-16 3
USGS 01593710 MIDDLE PATUXENT RIVER NEAR SIMPSONVILLE, MD 1988-12-21 1995-08-16 7
USGS 01594000 LITTLE PATUXENT RIVER AT SAVAGE, MD 1975-12-31 2000-09-28 536
USGS 01594200 HAMMOND BRANCH NEAR LAUREL, MD 1988-12-19 1989-09-12 3
USGS 01594395 DORSEY RUN AT JESSUP, MD 1988-12-19 1989-09-12 3
USGS 390617076502701 HO De 2 1952-05-23 1952-05-23 1
USGS 390710076494501 COUNTRY MEADOWS, MD 2002-05-15 2003-09-12 2
USGS 390734076475401 HO Df 54 1988-12-14 1988-12-14 1
USGS 390739076474401 DORSEY RUN, MD 2002-05-15 2003-09-12 2
USGS 390742076481401 HO Df 55 1989-06-26 1989-06-26 1
USGS 390800076541601 HO De 85 1990-05-22 1990-05-22 1
USGS 390830076473902 HO Df 60 2009-03-30 2009-03-30 1
USGS 390849076563201 HO Dd 40 1990-05-29 1990-05-29 1
USGS 390852076500701 HO De 51 1988-12-14 2019-02-13 2
USGS 390908076553005 HO Dd 94 1989-07-03 1989-07-03 2
USGS 390936076581702 HO Dd 97 1990-01-09 1990-01-09 1
USGS 390955076535101 HO De 17 1955-01-03 1955-01-03 1
USGS 390955076540001 HO De 16 1953-02-05 1955-01-03 2
USGS 391001076542401 HO Ce 83 1989-11-08 1989-11-08 1
USGS 391004076540301 HO Ce 183 1990-04-17 1990-04-17 1
USGS 391042076572601 HO Cd 249 1990-05-24 1990-05-24 1
USGS 391046076542601 HO Ce 102 1989-06-19 1989-06-19 2
USGS 391054076575801 HO Cd 240 1989-05-08 1989-10-25 2
USGS 391111076585101 HO Cd 206 1989-06-06 2019-02-13 2
USGS 391130076555901 HO Cd 387 1990-05-17 1999-09-20 2
USGS 391135076571701 HO Cd 384 1989-11-20 1999-09-21 3
USGS 391136076514001 HO Ce 41 1957-02-20 1957-02-20 1
USGS 391138076532401 HO Ce 126 1990-04-05 1990-04-05 2
USGS 391146076570701 HO Cd 385 1989-11-29 1989-11-29 1
USGS 391149076540101 HO Ce 117 1989-01-27 1989-11-01 2
USGS 391149077000301 HO Cc 38 1989-01-18 1989-01-18 2
USGS 391154077001001 HO Cc 1 1952-12-19 1952-12-19 1
USGS 391214076573601 HO Cd 386 1990-02-13 1990-02-13 1
USGS 391216076480101 HO Cf 112 1990-04-10 1990-04-10 1
USGS 391220076563301 HO Cd 102 1989-01-27 1989-10-25 2
USGS 391338077013001 HO Cc 12 1990-04-24 1990-04-24 1
USGS 391346076541501 HO Ce 76 1989-06-06 1989-06-06 2
USGS 391353076490301 HO Cf 107 1989-06-19 1989-06-19 1
USGS 391402076540301 HO Ce 188 2020-01-27 2020-01-27 1
USGS 391409076532201 HO Ce 132 1989-06-26 1989-06-26 1
USGS 391426076595701 HO Cd 389 1990-05-24 1990-05-24 1
USGS 391438076505801 HO Ce 163 1990-05-03 1990-05-03 1
USGS 391438076555001 HO Cd 342 1988-08-23 1993-02-22 35
USGS 391439076555601 HO Cd 80 1987-12-01 1993-02-22 45
USGS 391439076555602 HO Cd 81 1988-03-17 1993-02-22 39
USGS 391440076555401 HO Cd 20 1986-08-04 1991-10-29 28
USGS 391440076555402 HO Cd 78 1987-12-01 2002-10-15 62
USGS 391441076551201 HO Cd 388 1990-05-08 1990-05-08 1
USGS 391441076555301 HO Cd 390 1990-01-11 1993-02-24 21
USGS 391441076555302 HO Cd 391 1989-10-13 1993-02-24 24
USGS 391442076554701 HO Cd 26 1986-09-03 1990-01-11 10
USGS 391442076554702 HO Cd 29 1986-10-09 1993-02-22 37
USGS 391442076555301 HO Cd 21 1986-08-04 1990-01-10 28
USGS 391444076554701 HO Cd 25 1986-08-04 1991-09-09 11
USGS 391445076555101 HO Cd 79 1988-01-20 1993-02-22 40
USGS 391447076554702 HO Cd 28 1986-09-03 1993-02-22 50
USGS 391447076554703 HO Cd 253 1988-02-04 1992-09-03 19
USGS 391447076554704 HO Cd 290 1988-04-14 1993-02-24 35
USGS 391447076554705 HO Cd 291 1988-04-14 1991-07-16 29
USGS 391447076554706 HO Cd 292 1988-04-14 1993-02-24 30
USGS 391447076554707 HO Cd 341 1988-08-23 1993-02-22 26
USGS 391448076575501 HO Cd 344 1990-05-22 1990-05-22 1
USGS 391456076585801 HO Cd 334 1989-06-27 1989-06-27 2
USGS 391503076521301 HO Be 109 1989-06-14 1989-06-14 1
USGS 391506077013401 HO Bc 294 1990-05-03 1990-05-03 1
USGS 391513076545901 HO Be 22 1989-06-05 1989-06-05 1
USGS 391516076491101 HO Bf 8 1952-02-05 1954-05-18 2
USGS 391525076544901 HO Be 21 1989-06-05 1989-06-05 1
USGS 391533076563301 HO Bd 18 1981-08-14 1981-08-14 1
USGS 391534077021701 HO Bc 264 1989-05-08 1989-10-25 2
USGS 391543076564901 HO Bd 401 1989-11-20 1989-11-20 1
USGS 391558076545101 HO Be 155 2020-03-04 2020-03-04 1
USGS 391600076553701 HO Bd 3 1952-05-15 1952-05-15 1
USGS 391600076595401 HO Bd 411 1995-10-30 2001-08-30 13
USGS 391613076594601 HO Bd 412 1996-02-29 1996-02-29 1
USGS 391620076575801 HO Bd 246 1989-03-28 1989-03-28 1
USGS 391626076572301 HO Bd 405 1990-02-27 1997-06-30 2
USGS 391627077064401 HO Bb 155 1990-05-08 1990-05-08 1
USGS 391645077041601 HO Bc 172 1989-11-29 1989-11-29 1
USGS 391647077005801 HO Bc 304 1990-01-09 1990-01-09 1
USGS 391652077001301 HO Bc 246 1989-02-20 1989-03-20 2
USGS 391702077051401 HO Bb 138 1989-05-01 1989-05-01 1
USGS 391714076543801 HO Be 112 1990-05-31 1990-05-31 1
USGS 391718077014301 HO Bc 187 1988-12-09 1988-12-09 1
USGS 391720077040101 HO Bc 157 1989-11-08 1989-11-08 1
USGS 391723077034601 HO Bc 305 1996-05-13 2001-09-06 2
USGS 391723077040001 HO Bc 306 1996-05-07 1996-05-07 1
USGS 391724076512001 HO Be 96 1989-05-15 1989-05-15 1
USGS 391726076565802 HO Bd 406 1990-02-27 1990-02-27 1
USGS 391731076550401 HO Bd 4 1952-05-15 1952-05-15 1
USGS 391733076595301 HO Bd 77 1989-03-28 1989-03-28 1
USGS 391753076555801 HO Bd 325 1989-03-27 1989-03-27 1
USGS 391813076554701 HO Bd 402 1990-01-24 1990-01-24 1
USGS 391813076555601 HO Bd 403 1990-02-06 1990-02-06 1
USGS 391815076595401 HO Bd 404 1990-02-06 1990-02-06 1
USGS 391817077082401 HO Bb 66 1990-04-11 1990-04-11 1
USGS 391827077011301 HO Bc 8 1952-12-17 1952-12-17 1
USGS 391841077001601 HO Bc 176 1990-04-17 1990-04-17 1
USGS 391844077055501 HO Bb 160 1990-04-11 1990-04-11 1
USGS 391850077093301 HO Bb 59 1989-05-01 1989-11-01 2
USGS 391851077063301 HO Bb 88 1990-05-01 1990-05-01 1
USGS 391910077034501 HO Bc 25 1990-05-31 1990-05-31 1
USGS 391916077015001 HO Bc 63 1989-06-14 1989-06-14 2
USGS 391921076582501 HO Bd 9 1952-12-16 1952-12-16 1
USGS 391927076584401 HO Bd 390 1989-03-27 1989-03-27 1
USGS 391929077062901 HO Bb 156 1989-04-10 1989-04-10 1
USGS 391956077084501 HO Bb 73 1990-04-26 1990-04-26 1
USGS 392003077040501 HO Ac 92 1990-05-15 1990-05-15 2
USGS 392018077024201 HO Ac 25 1989-05-22 1989-05-22 1
USGS 392036077073201 HO Ab 78 1989-04-18 1989-04-18 1
USGS 392043077105901 HO Aa 8 1989-04-10 1989-04-10 1
USGS 392057077043301 HO Ac 82 1989-05-09 1989-05-09 1
  group icon Montgomery County, Maryland
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 01591000 PATUXENT RIVER NEAR UNITY, MD 1970-07-20 2004-08-04 702
USGS 01591610 PATUXENT RIVER BELOW BRIGHTON DAM NEAR BRIGHTON,MD 1980-11-07 1989-09-11 35
USGS 01591660 HAWLINGS RIVER NEAR LAYTONSVILLE, MD 1994-08-11 1994-08-11 1
USGS 01591670 HAWLINGS RIVER NEAR BROOKEVILLE, MD 1994-09-13 1994-09-13 1
USGS 01591700 HAWLINGS RIVER NEAR SANDY SPRING, MD 1979-11-20 1995-08-16 54
USGS 390853076591001 MO Dh 1 1952-12-16 1952-12-16 1
USGS 391201077035301 MO Cg 17 1948-05-25 1948-05-25 1
USGS 391201077035601 MO Cg 18 1948-05-25 1948-05-25 1
USGS 391246077052601 MO Cf 24 1966-06-13 1966-06-13 1
USGS 391247077032001 MO Cg 19 1947-11-11 1947-11-11 1
USGS 391247077060701 MO Cf 21 1966-05-26 1966-05-26 1
USGS 391247077061401 MO Cf 20 1966-05-19 1966-05-19 1
USGS 391249077031401 MO Cg 16 1947-11-11 1947-11-11 1
USGS 391249077052401 MO Cf 23 1966-06-09 1966-06-09 1
USGS 391259077062501 MO Cf 19 1966-05-16 1966-05-16 1
USGS 391927077120802 SPIGOT AT UNITED METHODIST CHURCH 1992-06-23 1992-06-23 1
  group icon Prince George'S County, Maryland
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 01592500 PATUXENT RIV NEAR LAUREL, MD 1963-07-01 2002-06-13 105
USGS 01594450 PATUXENT RIVER AT HARDESTY, MD 1963-06-27 1964-04-13 27
USGS 01594500 WESTERN BRANCH NEAR LARGO, MD 1995-08-14 1995-08-14 1
USGS 01594520 COLLINGTON BRANCH NEAR KIDWELLS CORNER, MD 1995-08-14 1995-08-14 1
USGS 01594526 WESTERN BRANCH AT UPPER MARLBORO, MD 1985-10-09 2000-09-28 810
USGS 01594528 CHARLES BRANCH NEAR CROOM, MD 1995-08-11 1995-08-11 1
USGS 01594533 MATAPONI CREEK NEAR BRANDYWINE, MD 1994-11-07 1995-08-11 2
USGS 01594560 PATUXENT RIVER AT NOTTINGHAM, MD 1963-08-02 1964-04-13 24
USGS 01594585 FULL MILL BRANCH NEAR WESTWOOD, MD 1994-11-07 1995-08-11 2
USGS 01594610 BLACK SWAMP CREEK NEAR POPLAR HILL, MD 1994-10-19 1995-08-11 2
USGS 01594682 SWANSON CREEK NEAR MALCOLM, MD 1994-10-19 1995-08-11 2
USGS 383226076405601 PG Hf 28 1963-05-17 1963-05-17 1
USGS 383231076411101 PG Hf 25 1963-05-16 1963-05-16 1
USGS 383248076405303 PG Hf 38 1974-03-26 1984-08-31 2
USGS 383250076405301 PG Hf 31 1973-06-14 1973-06-14 1
USGS 383258076412101 PG Hf 45 1990-10-17 1990-10-17 1
USGS 383259076412701 PG Hf 46 1990-11-16 1990-11-16 1
USGS 383300076411601 PG Hf 43 2007-01-30 2007-01-30 1
USGS 383301076413201 PG Hf 49 2010-03-12 2010-03-12 1
USGS 383348076411301 PG Hf 40 1975-01-24 1975-01-24 1
USGS 383348076411302 PG Hf 41 1975-01-14 1975-01-14 1
USGS 383348076411303 PG Hf 42 1974-12-20 1974-12-20 1
USGS 383501076432801 PG Gf 1 1949-03-28 1949-03-28 1
USGS 383751076453301 PG Ge 20 1981-10-09 1981-10-09 1
USGS 383832076414701 PG Gf 35 1975-02-05 1975-02-05 1
USGS 384232076452701 PG Fe 29 1960-05-12 1960-05-12 1
USGS 384233076444601 PG Ff 16 1952-03-31 1952-03-31 1
USGS 384233076461401 PG Fe 25 1960-05-12 1960-05-12 1
USGS 384243076445301 PG Ff 23 2002-11-25 2002-11-25 1
USGS 384250076423901 PG Ff 5 1951-03-20 1951-03-20 1
USGS 384625076440301 PG Ef 18 1960-05-12 1960-05-12 1
USGS 384636076441301 PG Ef 17 1960-05-12 1960-05-12 1
USGS 384753076504701 PG Ed 8 1950-04-17 1950-04-17 1
USGS 384844076470801 FEDERAL SPRING AT UPPER MARLBORO, MD 2000-04-07 2000-04-07 1
USGS 384859076445201 PG Ef 5 1946-04-15 1958-02-28 2
USGS 384927076440301 PG Ef 16 1963-06-05 1963-06-05 1
USGS 384957076434001 PG Ef 3 1949-06-06 1949-06-06 1
USGS 385130076465501 PG De 21 2004-03-04 2016-12-20 4
USGS 385135076463902 PG De 20 1958-02-28 1958-02-28 1
USGS 385137076462401 PG De 19 1958-02-28 1958-02-28 1
USGS 385231076481301 SOUTHWEST BRANCH NEAR LARGO, MD 2000-05-01 2000-05-01 1
USGS 385318076512601 PG Dd 6 1949-03-21 1949-03-21 1
USGS 385328076481001 WESTERN BRANCH 2 NEAR KOLBES CORNER, MD 2000-04-12 2000-04-12 1
USGS 385405076415401 PG Df 39 1998-07-22 1998-07-22 1
USGS 385406076475001 NORTHEAST BRANCH AT KOLBES CORNER, MD 2000-04-12 2000-04-12 1
USGS 385408076440601 COLLINGTON BRANCH AT BOWIE, MD 2000-04-24 2000-04-24 1
USGS 385419076404001 PG Df 5 1950-03-26 1950-03-26 1
USGS 385421076505101 LARGO BUSINESS PARK, MD 2002-05-15 2003-09-13 2
USGS 385427076424701 PG Df 38 1998-07-16 1998-07-16 1
USGS 385435076501601 EXECUTIVE TERRACE, MD 2002-05-15 2003-09-13 2
USGS 385501076454801 PG Ce 40 1998-07-20 1998-07-20 1
USGS 385502076423601 PG Cf 87 1998-07-20 1998-07-20 1
USGS 385520076420901 PG Cf 86 1998-07-20 1998-07-20 1
USGS 385524076455301 PG Ce 41 1998-07-20 1998-07-20 1
USGS 385527076443201 PG Cf 2 1949-03-22 1949-03-22 1
USGS 385528076481801 PG Ce 42 1998-09-15 1998-09-15 1
USGS 385529076443101 PG Cf 25 1952-04-17 1952-04-17 1
USGS 385539076485201 PG Ce 17 1949-11-04 1949-11-04 1
USGS 385550076485001 PG Ce 18 1949-11-04 1949-11-04 1
USGS 385558076424801 PG Cf 85 1998-07-16 1998-07-16 1
USGS 385605076490701 LOTTSFORD BRANCH NEAR GLENARDEN, MD 2000-05-08 2000-05-08 1
USGS 385656076442601 MD 197 & US 50, MD 2002-05-16 2003-09-13 2
USGS 385658076435302 PG Cf 7 1958-02-28 1958-02-28 1
USGS 385711076430201 PG Cf 11 1950-04-17 1950-04-17 1
USGS 385723076574701 BALD MILL BRANCH AT LANHAM, MD 2000-05-03 2000-05-03 1
USGS 385738076461601 PG Ce 39 1998-07-16 1998-07-16 1
USGS 385744076502401 WASHINGTON BUSINESS PARK, MD 2002-05-21 2003-09-13 2
USGS 385750076483301 PG Ce 16 1935-11-08 1935-11-08 1
USGS 385754076425201 PG Cf 82 1998-07-15 1998-07-15 1
USGS 385757076444501 PG Cf 3 1958-02-28 1958-02-28 1
USGS 385758076442201 PG Cf 35 1963-06-05 1963-06-05 1
USGS 385803076435401 PG Cf 88 1998-07-29 1998-07-29 1
USGS 385806076435302 PG Cf 32 1963-06-05 1963-06-05 1
USGS 385806076435303 PG Cf 33 1963-06-05 1963-06-05 1
USGS 385811076430201 PG Cf 84 1998-07-15 1998-07-15 1
USGS 385833076434801 PG Cf 89 1998-07-29 1998-07-29 1
USGS 385841076430301 PG Cf 83 1998-07-15 1998-07-15 1
USGS 385857076503501 PG Cd 7 1950-04-13 1950-04-13 1
USGS 385907076423101 PG Cf 1 1949-03-21 1949-11-04 2
USGS 385911076470901 HORSEPEN BRANCH AT BOWIE, MD 2000-05-10 2000-05-10 1
USGS 385926076460501 OLD CHAPEL ESTATES, MD 2002-05-15 2003-09-13 2
USGS 385957076461701 STEEPLECHASE, MD 2002-05-15 2003-09-13 2
USGS 390100076464002 PG Be 39A 2016-08-22 2016-08-22 3
USGS 390102076445701 PG Be 33 1998-07-16 1998-07-16 1
USGS 390112076470201 PG Be 34 1998-07-22 1998-07-22 1
USGS 390133076451901 FLEMING--BOWIE ST, MD 2002-05-16 2003-09-12 2
USGS 390152076492601 PG Be 32 1980-06-05 1980-06-05 1
USGS 390156076482401 ROBIN'S POND, MD 2002-03-26 2003-04-09 2
USGS 390156076483201 MD-PWRC SAM 2021-05-10 2021-06-08 2
USGS 390157076454101 PG Be 37 2003-10-21 2003-10-21 1
USGS 390201076512901 SHUMATE SITE, MD 2001-03-08 2005-03-14 6
USGS 390206076483501 SAM'S POND, MD 2001-03-08 2005-03-15 6
USGS 390217076464801 WOOD DUCK 35, MD 2001-03-09 2001-03-09 1
USGS 390224076520401 LAURA'S POND B-SOUTH SIDE, MD 2001-03-08 2005-03-15 3
USGS 390225076520501 LAURA'S POND A-NORTH SIDE, MD 2001-03-08 2005-03-15 6
USGS 390230076512201 BELTSVILLE 1, MD 2001-05-08 2005-03-25 5
USGS 390233076491501 MD-PWRC 9B 2021-05-10 2021-05-10 1
USGS 390250076494001 PG Be 35 1998-07-29 1998-07-29 1
USGS 390252076483501 MD-PWRC 33A 2021-05-10 2021-06-08 2
USGS 390257076474501 KNOWLES MARSH, MD 2002-05-15 2003-09-12 2
USGS 390304076492601 MONTPELIER WOODS, MD 2002-05-14 2003-09-12 2
USGS 390311076492001 PG Be 16 1959-09-11 1959-09-11 1
USGS 390315076490101 PG Be 8 1940-12-12 1940-12-12 1
USGS 390332076503001 MUIRKIRK ROAD, MD 2002-05-14 2003-09-12 2
USGS 390445076552301 FAIRLAND, MD 2002-05-14 2003-09-12 2
USGS 390450076515601 LAUREL LAKES CT, MD 2002-05-14 2003-09-12 2
USGS 390536076541101 LAUREL EMPLOYMENT PARK, MD 2002-05-14 2003-09-12 2
USGS 390600076532501 PG Ad 1 1949-03-21 1949-03-21 1
USGS 390642076524301 PG Ad 13 1952-03-31 1952-03-31 1
  group icon St. Mary'S County, Maryland
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 01594709 KILLPECK CREEK NEAR HUNTERSVILLE, MD 1994-11-07 1995-08-09 2
USGS 01594710 KILLPECK CREEK AT HUNTERSVILLE, MD 1985-10-08 1997-09-16 493
USGS 01594712 LOCKES SWAMP CREEK AT MECHANICSVILLE, MD 1994-09-14 1995-08-09 2
USGS 01594713 LOCKES SWAMP CREEK AT HUNTERSVILLE, MD 1994-09-14 1994-09-14 1
USGS 01594734 PATUXENT RIVER ABOVE SANDGATES, MD 1982-06-24 1983-10-31 231
USGS 01594736 PATUXENT RIVER NEAR SANDGATES, MD 1982-06-25 1983-03-10 119
USGS 01594790 PATUXENT RIVER NEAR HALF PONE POINT, MD 1982-06-16 1983-11-01 386
USGS 01594816 CUCKOLD CREEK NEAR HOLLYWOOD, MD 1994-09-15 1995-08-09 2
USGS 01594826 LEWIS CREEK AT CALIFORNIA, MD 1994-09-15 1995-08-08 3
USGS 01594860 AGRICULTURAL RUNOFF SITE 1 NEAR LEXINGTON PARK, MD 1986-08-18 1990-05-29 144
USGS 381634076270501 SM Df 98 1999-08-04 2008-07-15 2
USGS 381658076255601 SM Df 9 1947-01-16 1962-06-24 7
USGS 381707076255801 SM Df 99 1999-08-05 2008-07-15 2
USGS 381715076261601 SM Df 10 1947-01-16 1962-06-24 8
USGS 381719076264801 SM Df 14 1951-11-27 1999-08-05 7
USGS 381729076271401 SM Df 38 1951-11-27 1959-08-13 6
USGS 381747076305301 SM De 51 2010-03-11 2010-03-11 1
USGS 381828076291601 SM Df 69 2012-07-31 2012-07-31 4
USGS 381919076284301 SM Df 31 1952-04-02 1952-04-02 1
USGS 382018076291501 PATUXENT R NR HALF PONE POINT,MD 1982-03-22 1982-03-23 2
USGS 382037076300201 SM Ce 26 1967-05-19 1967-05-19 1
USGS 382157076352301 SM Cd 16 1967-05-22 1967-05-22 1
USGS 382208076334301 SM Ce 47 2002-12-03 2011-05-31 5
USGS 382222076304602 SM Ce 38 1980-08-07 1980-08-07 1
USGS 382314076335201 SM Ce 27 1967-05-24 1967-05-24 1
USGS 382340076384801 SM Cd 20 1967-05-16 1967-05-16 1
USGS 382448076363501 SM Cd 1 1949-03-09 1949-03-09 1
USGS 382605076430201 SM Bc 39 2002-03-28 2002-03-28 1
USGS 382647076443601 SM Bc 16 1967-05-16 1967-05-16 1
USGS 382708076395701 SM Bd 1 1947-01-17 1947-01-17 1
USGS 382827076450901 SM Bb 4 1950-03-28 1950-03-28 1
USGS 382907076405801 SM Bc 17 1967-05-17 1967-05-17 1
  group icon Worcester County, Maryland
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 01594865 RUNOFF SITE 2 NEAR LEXINGTON PARK, MD 1986-08-18 1986-08-18 4