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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 Discrete water samples data are undergoing modernization with this page no longer being updated with the latest data starting March 11, 2024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 -- 723 sites found


Hydrologic unit = 01080205
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 Hartford County, Connecticut
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 01183950 GRAPE BK AT THOMPSONVILLE, CT. 1967-09-07 1968-04-25 2
USGS 01183960 CONNECTICUT R AT THOMPSONVILLE, CT. 1967-06-22 1967-07-05 2
USGS 01183999 CONN L & P CO. CANAL AT THOMPSONVILLE 1955-12-15 1968-08-18 12
USGS 01184000 CONNECTICUT RIVER AT THOMPSONVILLE, CT 1952-10-10 2024-03-04 1228
USGS 01184005 STONY BK AT SHELDON ST NR WEST SUFFIELD, CT 1967-09-07 1968-08-22 4
USGS 01184099 STONY BROOK NR EAST GRANBY, CT. 1984-11-06 1984-11-06 1
USGS 01184100 STONY BROOK NEAR WEST SUFFIELD, CT 1980-10-24 2011-08-29 427
USGS 01184205 MUDDY BK AT SUFFIELD, CT. 1967-09-07 1968-08-22 3
USGS 01184208 PHILO BK NR SUFFIELD, CT. 1967-09-07 1968-04-25 2
USGS 01184215 STONY BK NR SUFFIELD, CT. 1967-09-07 1968-04-25 2
USGS 01184240 CONNECTICUT R AT WAREHOUSE POINT, CT. 1967-06-22 1967-07-05 4
USGS 01184250 KETTLE BK AT WINDSOR LOCKS, CT. 1967-09-07 1968-04-25 3
USGS 01184255 CONNECTICUT R AT WINDSOR LOCKS, CT 1967-04-05 1967-07-05 5
USGS 01184259 TRIB TO NAMERICK BK NR WAREHOUSE PT,CT dup2 1969-11-14 1969-11-14 1
USGS 01184260 NAMERICK BK NR WAREHOUSE POINT, CT. 1967-09-07 1969-11-14 6
USGS 01184261 TRIB TO NAMERICK BK NR WAREHOUSE PT,CT dup1 1969-11-14 1969-11-14 1
USGS 01184400 BUCKHORN BK NR MELROSE, CT. 1967-09-07 1968-08-22 4
USGS 01184420 SCANTIC R NR BROAD BROOK, CT. 1968-08-14 1968-08-14 1
USGS 01184470 BROAD BROOK AT MELROSE, CT 1992-05-07 2002-09-20 13
USGS 01184475 Unnamed Tributary to Broad Brook at Broad Brook 2002-09-20 2002-09-20 1
USGS 01184488 Chestnut Brook at Route 191 at Broad Brook, CT 2002-09-20 2002-09-20 1
USGS 01184490 BROAD BROOK AT BROAD BROOK, CT 1962-04-25 2024-02-06 286
USGS 01184500 SCANTIC R AT BROAD BROOK, CT. 1952-09-11 1997-02-13 272
USGS 01184690 DRY BK NR EAST WINDSOR HILL, CT. 1967-09-07 1968-04-25 2
USGS 01184700 CONNECTICUT R AT EAST WINDSOR, CT. 1967-06-22 1967-07-05 4
USGS 01187830 Phelps Brook at Mill Dam Road near Collinsville 1998-10-01 2001-09-19 56
USGS 01189520 HOLCOMB BK AT E. GRANBY, CT. 1971-05-10 1971-08-26 2
USGS 01190025 CONNECTICUT R NR WINDSOR, CT. 1967-06-22 1967-07-05 2
USGS 01190027 CONNECTICUT R AT BISSELL BRIDGE AT WILSON, CT 1967-06-22 1967-07-05 4
USGS 01190045 PODUNK R AT SOUTH WINDSOR, CT 1975-01-20 1981-07-14 50
USGS 01190067 CONNECTICUT R AT EAST HARTFORD, CT. 1984-08-07 1984-08-07 1
USGS 01190069 CONNECTICUT R, AT RAILROAD BR, AT HARTFORD, CT 1974-07-17 1976-08-04 30
USGS 01190070 CONNECTICUT RIVER AT HARTFORD, CT 1954-04-14 2010-08-12 313
USGS 01190095 PIPER BK. AT NEW BRITAIN,CT. 1968-08-13 1968-08-13 1
USGS 01190100 PIPER BK AT NEWINGTON JUNCTION, CT. 1962-04-25 1968-08-13 2
USGS 01190200 MILL BK AT NEWINGTON, CT. 1962-04-25 1962-04-25 1
USGS 01190265 HARTFORD RES. 1 NR W. HARTFORD, CT. 1971-12-03 1971-12-03 1
USGS 01190500 SOUTH BRANCH PARK R AT HARTFORD, CT. 1968-08-13 1976-01-15 14
USGS 01190600 WASH BK AT BLOOMFIELD, CT. 1962-04-25 1968-08-13 2
USGS 01190605 HARTFORD RES. NO. 6 NR W. HARTFORD, CT. 1971-12-03 1971-12-03 1
USGS 01190620 TUMBLEDOWN BK NR BLOOMFIELD, CT. 1968-11-02 1968-11-02 1
USGS 01190623 WASH BK NR BLOOMFIELD, CT. 1968-08-13 1968-08-13 1
USGS 01190650 BEAMANS BK AT BLOOMFIELD, CT. 1967-09-07 1968-04-25 2
USGS 01191000 NORTH BRANCH PARK RIVER AT HARTFORD, CT 1955-10-25 1994-08-11 53
USGS 01191500 PARK R AT HARTFORD, CT. 1953-09-18 1967-09-27 22
USGS 01191510 PARK R AT HARTFORD, CT 1974-07-16 1979-08-21 66
USGS 01191550 CONNECTICUT RIVER BOAT LAUNCH AT EAST HARTFORD, CT 2016-06-06 2020-10-07 51
USGS 01191600 CONNECTICUT R AT HARTFORD, CT. 1967-06-22 1967-07-05 5
USGS 01192280 HOCKANUM R NR MANCHESTER, CT. 1968-08-14 1968-08-14 2
USGS 01192290 MANCHESTER RES. NO. 2 NR MANCHESTER, CT. 1973-04-12 1973-04-12 2
USGS 01192291 MANCHESTER RES.NO 1 NR MANCHESTER,CT. 1969-05-07 1969-05-07 1
USGS 01192310 HOCKANUM RIVER AT RAILROAD BRIDGE NEAR MANCHESTER 1995-08-24 1995-08-24 1
USGS 01192321 BIGELOW BK ABV CENTER SPRINGS POND, MANCHESTER, CT 1995-08-24 1995-08-24 1
USGS 01192322 BIGELOW BROOK AT BROAD STREET, NEAR MANCHESTER, CT 1995-08-24 1995-08-24 1
USGS 01192323 BIGELOW BROOK AT HILLIARDVILLE, CT 1994-07-21 1995-08-24 2
USGS 01192332 HOCKANUM R. DS OF NEW STATE RD NR. HILLIARDVILLE 1995-08-24 1995-08-24 1
USGS 01192350 HOWARD RES. NR. MANCHESTER, CT. 1969-05-07 1969-05-07 1
USGS 01192360 PORTER RES. NR. MANCHESTER, CT. 1969-05-07 1973-04-13 3
USGS 01192370 PORTER BROOK NEAR MANCHESTER, CT 1975-07-22 1981-09-04 116
USGS 01192400 GLOBE HOLLOW RES. NR. MANCHESTER, CT 1969-05-07 1988-12-09 2
USGS 01192480 HOP BROOK NR MANCHESTER CONN 1994-07-21 1994-07-21 1
USGS 01192500 HOCKANUM RIVER NEAR EAST HARTFORD, CT 1954-04-21 2024-02-05 389
USGS 01192509 SCOTLAND IMPOUNDMENT NR EAST HARTFORD, CT. 1984-11-08 1984-11-08 1
USGS 01192516 HOCKANUM R AT EAST HARTFORD, CT 1974-07-16 1991-09-05 200
USGS 01192520 CONNECTICUT R NR HARTFORD, CT. 1967-06-22 1967-07-05 6
USGS 01192526001 SITE USED FOR QUALITY ASSURANCE SAMPLES FOR CT 1995-03-08 2023-05-12 5
USGS 01192530 CONNECTICUT R AT WETHERSFIELD, CT. 1967-06-22 1967-07-05 6
USGS 01192535 PORTER BK NR EAST HARTFORD, CT. 1967-09-07 1968-04-25 2
USGS 01192600 SOUTH BRANCH SALMON BK AT BUCKINGHAM, CT. 1962-04-25 1962-04-25 1
USGS 01192601 SALMON BK NR BUCKINGHAM, CT. 1967-09-07 1968-04-25 2
USGS 01192616 CONNECTICUT R AT BOAT LAUNCH AT GLASTONBURY, CT 2016-06-06 2020-10-07 51
USGS 01192619 CONNECTICUT RIVER AT GLASTONBURY, CT. 1984-08-10 1984-08-10 1
USGS 01192620 CONNECTICUT R AT SOUTH WETHERSFIELD, CT. 1967-06-22 1967-07-05 5
USGS 01192629 CONNECTICUT R AT SOUTH GLASTONBURY CONN 1967-06-22 1967-07-05 5
USGS 01192630 BUCKINGHAM RES. NEAR BUCKINGHAM, CT. 1969-05-07 1973-04-13 3
USGS 01192640 COLD BK NR EAST GLASTONBURY, CT. 1967-09-07 1968-08-22 3
USGS 01192650 ROARING BK AT HOPEWELL, CT. 1962-04-25 1962-04-25 1
USGS 01192670 GOFF BK AT SOUTH WETHERSFIELD, CT. 1967-09-07 1968-08-22 4
USGS 01192674 CONNECTICUT R AT ROCKY HILL, CT. 1967-06-22 2020-10-07 58
USGS 01192681 KENMERE RES NR MERIDEN, CT. 1971-06-10 1971-06-10 1
USGS 01192682 MERIMERE RES NR MERIDEN, CT. 1970-04-28 1971-06-10 2
USGS 01192683 MATTABESSET R NR KENSINGTON, CT. 1971-08-24 1971-08-26 2
USGS 01192687 NORTH BK NR BERLIN, CT. 1971-05-14 1971-09-08 2
USGS 01192688 WASEL RES NR NEW BRITAIN, CT. 1971-06-10 1971-06-10 1
USGS 01192689 SHUTTLE MEADOW RES.NR.NEW BRITAIN,CT. 1971-06-10 1973-03-07 3
USGS 01192692 WILLOW BROOK AT NEW BRITAIN, CT. 1971-08-26 1972-07-25 29
USGS 01192693 WILLOW BK NR NEW BRITAIN, CT. 1972-01-27 1972-07-25 48
USGS 01192694 WILLOW BK AT CHRISTIAN LANE AT BERLIN, CT 1972-01-27 1972-07-25 23
USGS 01192696 ROCKHOLE BK NR NEWINGTON, CT. 1971-05-14 1971-09-08 2
USGS 01192700 MATTABESSET R AT EAST BERLIN, CT 1956-05-04 1971-08-26 7
USGS 01192704 MATTABESSET RIVER AT ROUTE 372 AT EAST BERLIN 1995-03-06 2024-02-06 235
USGS 01192710 BRADLEY BK AT EAST BERLIN, CT. 1971-05-14 1971-09-08 2
USGS 01193300 BLACKLEDGE R NR GILEAD, CT. 1971-05-14 1971-09-08 2
USGS 01193340 BLACKLEDGE R ABV LYMAN BR NR N WESTCHESTER, CT 2000-04-03 2000-08-02 3
USGS 01193351 LYMAN BK. NR. NORTH WESTCHESTER, CT. 1971-08-30 1971-08-30 1
USGS 01193400 FAWN BK NR NORTH WESTCHESTER, CT 1971-05-14 2022-07-01 4
USGS 01193450 SCHROEDER BROOK AT SOUTH RD AT S. MARLBOROUGH 1986-07-12 1990-01-03 49
USGS 01193465 DICKINSON CREEK NR MARLBOROUGH CT. 1986-08-21 1990-01-03 50
USGS 413423072334401 GREAT HILL POND NR COBALT CT 1995-06-01 1995-08-02 4
USGS 413512072475501 CT-B 383 1972-04-03 1972-04-03 1
USGS 413538072253501 079 ATM DEPOSITION SITE AT N. WESTCHESTER, CT. 1983-05-29 1991-08-09 148
USGS 413555072452001 CT-B 380 1972-04-03 1972-04-03 1
USGS 413608072475801 CT-B 382 1972-04-03 1972-04-03 1
USGS 413620072512001 CT-S 144 1957-09-23 1957-09-23 1
USGS 413623072265001 CT-MB 8 1972-04-24 1972-04-24 1
USGS 413652072483601 CT-B 403 1993-08-19 1993-08-19 1
USGS 413658072251501 CT-MB 34 1988-08-19 1988-08-19 1
USGS 413809072272401 CT-MB 2 1971-05-28 1971-05-28 1
USGS 413809072373801 CT-GL 208 1969-04-28 1969-04-28 1
USGS 413811072452801 CT-B 364 1972-04-03 1972-04-03 1
USGS 413820072440101 CT-B 381 1972-05-02 1972-05-02 1
USGS 413830072431301 Mattabasset River at Wethersfield-Bridge, CT 1995-09-27 1995-09-27 1
USGS 413833072282701 CT-MB 6 1972-04-24 1972-04-24 1
USGS 413841072440701 CT-B 377 1972-04-04 1972-04-04 1
USGS 413842072490200 NEW BRITAIN PRECP NR NEW BRITAIN CT 1971-04-01 1971-11-01 8
USGS 413847072543701 CT-S 383 1978-07-10 1978-07-10 1
USGS 413852072343901 CT-GL 239 1974-07-31 1989-02-22 2
USGS 413857072452901 CT-B 378 1972-04-03 1972-04-03 1
USGS 413901072275401 CT-MB 3 1971-05-28 1971-05-28 1
USGS 413909072344501 CT-GL 46 1953-05-18 1953-05-18 1
USGS 413924072395401 CT-RH 195 1969-04-24 1969-04-24 1
USGS 413924072441601 CT- N 203 2003-06-03 2017-04-13 3
USGS 413937072410901 CT-RH 194 1969-04-24 1969-04-24 1
USGS 413941072373501 CT-GL 236 1981-03-30 1981-03-30 1
USGS 414008072343001 CT-GL 238 1988-08-10 1988-08-10 1
USGS 414019072452501 CT-NB 210 1972-04-04 1972-04-04 1
USGS 414030072330701 CT-GL 232 1978-08-29 1978-08-29 1
USGS 414031072330301 CT-GL 233 1978-08-17 1978-08-17 1
USGS 414036072413601 1860 RESERVOIR NR WETHERSFIELD, CT 1995-06-01 1995-08-04 4
USGS 414046072280501 CT-MB 7 1972-04-24 1972-04-24 1
USGS 414049072325901 CT-GL 104 1954-03-26 1954-03-26 1
USGS 414054072324401 CT-GL 76 1954-03-30 1954-03-30 1
USGS 414058072425901 CT- N 204 2003-06-03 2017-09-05 3
USGS 414108072405201 CT-WF 176 1967-03-13 1967-03-13 1
USGS 414109072410001 CT-WF 177 1967-03-13 1967-03-14 2
USGS 414114072405601 CT-WF 181 1989-07-10 1989-07-10 1
USGS 414114072405602 CT-WF 182 1989-07-10 1989-07-10 2
USGS 414123072501201 CT-PV 19 1957-09-23 1957-09-23 1
USGS 414147072423101 CT-N 196 1969-04-24 1969-04-24 1
USGS 414206072454601 CT-NB 212 1989-07-07 1989-07-07 1
USGS 414233072390101 CT-WF 179 1969-04-29 1969-04-29 1
USGS 414245072333901 CT- GL 240 2002-06-10 2017-04-10 4
USGS 414253072472701 CT-F 136 1957-08-28 1957-08-28 1
USGS 414300072323401 CT-GL 207 1969-04-21 1969-04-21 1
USGS 414303072330101 CT-GL 103 1954-05-26 1954-05-26 1
USGS 414307072335401 CT-GL 206 1969-04-17 1969-04-17 1
USGS 414307072471201 CT-F 69 1971-11-19 1971-11-19 1
USGS 414309072430201 CT-N 197 1969-04-24 1969-04-24 1
USGS 414320072362601 CT HWY RT-2E STA 135 GLASTONBURY, CT 2019-06-10 2021-03-28 25
USGS 414329072370601 CT HWY RT-3W GLASTONBURY, CT 2019-06-10 2021-03-18 28
USGS 414340072330001 CT-GL 205 1969-04-26 1969-04-26 1
USGS 414345072464001 CT-F 222 1969-04-25 1969-04-25 1
USGS 414435072461201 CT-WH 142 1993-08-03 1994-06-22 2
USGS 414447072311201 CT-M 174 1988-08-15 1989-08-18 2
USGS 414447072335001 CT-M 136 1969-04-17 1969-04-17 1
USGS 414454072311401 CT-M 175 1988-08-15 1989-08-18 2
USGS 414501072384601 CT-EH 44 1957-08-28 1957-08-28 1
USGS 414509072304301 CT-M 172 1988-06-24 1988-07-20 2
USGS 414518072352101 CT-EH 41 1954-04-03 1954-04-03 1
USGS 414521072351001 CT-EH 42 1954-03-26 1954-03-26 1
USGS 414527072341001 CT-M 138 1969-04-21 1969-04-21 1
USGS 414528072305101 CT-M 171 1988-06-29 1988-12-01 2
USGS 414530072280301 CT-M 143 1969-10-01 1969-10-01 1
USGS 414532072331201 CT-M 137 1969-04-21 1969-04-21 1
USGS 414535072324701 CT- M 195 2003-06-03 2017-06-08 3
USGS 414535072445501 CT-WH 130 1969-04-29 1969-04-29 1
USGS 414545072304601 CT-M 46 1954-04-05 1954-04-05 1
USGS 414545072304602 CT-M 141 1969-05-07 1969-05-07 1
USGS 414546072310201 CT-M 142 1967-02-06 1967-02-06 1
USGS 414547072304801 CT-M 158 1987-07-16 1988-06-29 2
USGS 414548072330501 CT-M 169 1988-07-20 1988-07-21 2
USGS 414554072301301 CT-M 140 1969-04-21 1969-04-21 1
USGS 414555072333601 CT- M 193 2003-06-03 2017-06-08 7
USGS 414557072320301 CT-M 190 1994-06-14 1994-06-14 1
USGS 414600072340701 CT-M 139 1969-04-17 1969-04-17 1
USGS 414605072302101 CT-M 189 1994-05-18 1995-08-11 7
USGS 414613072353101 CT-EH 160 1969-04-27 1969-04-27 1
USGS 414616072310201 CT-M 176 1994-01-18 1995-08-10 8
USGS 414616072310202 CT-M 177 1994-01-18 1995-08-10 8
USGS 414616072310203 CT-M 178 1994-01-18 1995-08-11 8
USGS 414617072314801 CT-M 186 1994-05-24 1995-08-14 7
USGS 414617072314802 CT-M 187 1994-06-08 1995-08-14 7
USGS 414617072314803 CT-M 188 1994-06-08 1995-08-14 8
USGS 414618072331101 CT-M 170 1988-07-21 1988-07-27 4
USGS 414624072283301 CT-M 160 1987-06-25 1994-09-02 4
USGS 414627072322601 CT-M 179 1994-01-13 1995-08-28 8
USGS 414627072322602 CT-M 180 1994-01-13 1995-08-28 8
USGS 414627072322603 CT-M 181 1994-01-13 1995-08-28 8
USGS 414629072290601 CT-M 159 1987-06-25 1988-07-28 2
USGS 414631072332301 CT-M 168 1988-07-20 1988-07-21 2
USGS 414632072291000 MANCHESTER PRECP NR MANCHESTER CT 1965-07-30 1966-10-02 5
USGS 414637072314401 CT-M 165 1987-06-29 1989-06-27 4
USGS 414642072333301 CT-M 58 1954-04-05 1954-04-05 1
USGS 414649072434401 CT- WH 143 2003-06-03 2017-06-07 3
USGS 414651072374901 CT-EH 1 1953-05-18 1953-05-18 1
USGS 414654072344701 CT-M 68 1915-06-16 1915-06-16 1
USGS 414658072375201 CT-EH 37 1953-05-18 1953-05-18 1
USGS 414706072332901 CT-M 183 1994-01-11 1995-08-25 8
USGS 414706072332902 CT-M 184 1994-01-11 1995-08-25 8
USGS 414706072332903 CT-M 185 1994-01-11 1995-08-25 8
USGS 414708072332201 CT- M 191 1994-07-22 1995-08-24 6
USGS 414709072330601 CT-M 166 1987-07-17 1988-10-26 3
USGS 414709072332601 CT-M 167 1987-07-15 1988-08-26 2
USGS 414712072440601 CT-WH 26 1915-06-24 1915-06-24 1
USGS 414717072332101 CT-M 78 1969-05-07 1969-05-07 1
USGS 414718072434501 CT-WH 129 1969-04-29 1969-04-29 1
USGS 414724072302001 CT-M 77 1969-05-07 1969-05-07 1
USGS 414725072330201 CT-M 134 1957-08-28 1957-08-28 1
USGS 414737072353901 CT-EH 159 1969-04-21 1969-04-21 1
USGS 414739072302401 CT-M 76 1969-05-07 1969-05-07 1
USGS 414740072301801 CT-M 163 1988-03-18 1988-12-02 3
USGS 414741072284501 CT-M 162 1987-06-26 1988-08-23 3
USGS 414745072302701 CT-M 60 1954-11-04 1954-11-04 1
USGS 414747072310801 CT-M 135 1969-04-21 1969-04-21 1
USGS 414800072362901 CT-132 SW 69 1953-05-20 1953-05-20 1
USGS 414804072333601 CT-M 57 1954-07-20 1954-07-20 1
USGS 414804072391801 CT HWY I-91 STA 215 HARTFORD, CT 2019-06-10 2021-05-09 23
USGS 414814072301901 CT-M 164 1987-07-17 1988-10-26 3
USGS 414815072335701 CT- M 194 2003-07-22 2017-08-03 5
USGS 414825072350901 CT- SW 136 2003-06-03 2017-08-03 10
USGS 414826072290901 CT- M 192 2003-06-03 2017-07-31 10
USGS 414830072332401 CT-SW 119 1969-04-26 1969-04-26 1
USGS 414842072423801 CT-BL 159 1969-04-25 1969-04-25 1
USGS 414850072355401 CT-SW 118 1969-04-22 1969-04-22 1
USGS 414852072414401 CT-BL 23 1915-06-17 1915-06-17 1
USGS 414853072303601 CT-M 157 1987-07-14 1988-08-23 2
USGS 414854072442901 CT-BL 32 1954-01-26 1954-01-26 1
USGS 414857072302701 CT-M 161 1987-07-14 1988-08-23 2
USGS 414901072305001 CT-M 173 1988-06-23 1988-06-23 1
USGS 414902072455001 CT-BL 157 1969-04-23 1969-04-23 1
USGS 414912072305801 CT-SW 112 1968-04-29 1968-04-29 1
USGS 414913072304701 CT-SW 135 1988-06-29 1988-06-29 1
USGS 414914072310101 CT-SW 134 1988-06-23 1988-06-23 1
USGS 414914072530401 CT-CA 137 1989-07-28 1989-07-28 1
USGS 414914072530402 CT-CA 138 1989-07-27 1989-07-27 1
USGS 414917072403501 CT- W 217 2003-07-14 2017-06-06 2
USGS 414918072323701 CT-SW 116 1969-04-21 1969-04-21 1
USGS 414935072532401 CT-CA 139 1990-05-25 1990-05-25 1
USGS 414937072332101 CT-SW 115 1969-04-27 1969-04-27 1
USGS 414958072391201 CT-W 194 1969-04-25 1969-04-25 1
USGS 415025072304901 CT-SW 120 1969-04-28 1969-04-28 1
USGS 415025072352801 CT-SW 72 1954-03-27 1954-03-27 1
USGS 415030072413901 CT-BL 158 1969-04-25 1969-04-25 1
USGS 415053072411701 CT-W 9 1954-03-30 1954-03-30 1
USGS 415101072314901 CT- SW 139 2003-07-25 2017-08-02 5
USGS 415102072344701 CT-132 SW 68 1953-05-20 1953-05-20 1
USGS 415108072314901 CT-SW 73 1954-03-27 1954-03-27 1
USGS 415111072334801 CT-SW 71 1954-07-20 1954-07-20 1
USGS 415112072460901 CT-BL 31 1953-05-27 1953-05-27 1
USGS 415117072435101 CT-BL 49 1954-03-30 1954-03-30 1
USGS 415122072353901 CT-SW 117 1969-04-22 1969-04-22 1
USGS 415125072453001 CT-BL 156 1969-04-23 1969-04-23 1
USGS 415141072413601 CT-BL 168 1978-08-28 1978-08-28 1
USGS 415144072413801 CT-BL 166 1978-08-25 1978-08-25 1
USGS 415144072413802 CT-BL 167 1978-08-25 1978-08-25 1
USGS 415145072413701 CT-BL 164 1978-08-24 1978-08-24 1
USGS 415145072413702 CT-BL 165 1978-08-24 1978-08-24 1
USGS 415148072325601 CT- SW 138 2003-07-23 2017-08-02 5
USGS 415221072445701 CT-BL 155 1969-04-23 1969-04-23 1
USGS 415228072311601 CT-EW 102 1969-05-01 1969-05-01 1
USGS 415229072453301 CT-BL 27 1953-05-21 1953-05-21 1
USGS 415235072335901 CT-EW 93 1969-04-29 1969-04-29 1
USGS 415300072311601 CT-EW 139 1992-08-20 1994-05-05 3
USGS 415302072315501 CT-EW 95 1969-04-29 1969-04-29 1
USGS 415305072410701 CT-W 11 1953-05-27 1953-05-27 1
USGS 415327072373901 CT-W 191 1969-04-23 1969-04-23 1
USGS 415329072313501 CT-EW 140 1992-08-20 1993-08-31 2
USGS 415333072350401 CT-EW 6 1953-05-27 1953-05-27 1
USGS 415344072343001 CT-EW 92 1969-04-29 1969-04-29 1
USGS 415346072352801 CT-EW 59 1954-03-30 1954-03-30 1
USGS 415401072344801 CT-EW 10 1953-05-27 1953-05-27 1
USGS 415412072354801 CT-EW 101 1969-05-01 1969-05-01 1
USGS 415416072311601 CT-EW 138 1989-07-27 1989-07-27 1
USGS 415422072381201 CT-WL 39 1969-04-23 1969-04-23 1
USGS 415446072364501 CT- EW 141 2003-06-03 2017-06-05 6
USGS 415450072332201 CT-EW 133 2004-05-11 2004-05-11 1
USGS 415451072332401 CT-EW 99 1969-04-30 1969-04-30 1
USGS 415451072333401 CT-EW 88 1968-02-14 1968-02-14 1
USGS 415451072333402 CT-EW 90 1968-05-23 1969-05-12 2
USGS 415452072322201 CT-EW 94 1969-04-30 1969-04-30 1
USGS 415454072334301 CT-EW 103 1969-05-12 1969-05-12 1
USGS 415500072390601 CT-WL 16 1954-07-20 1954-07-20 1
USGS 415502072472801 CT-128 SI 140 1957-08-28 1957-08-28 1
USGS 415504072323401 CT-EW 50 1969-05-12 1969-05-12 1
USGS 415512072341401 CT-EW 96 1969-04-29 1969-04-29 1
USGS 415514072354901 CT-EW 54 1915-06-18 1915-06-18 1
USGS 415525072375901 CT-WL 38 1969-04-23 1969-04-23 1
USGS 415527072403301 CT-WL 3 1954-04-15 1954-04-15 1
USGS 415527072403302 CT-WL 4 1954-04-15 1954-04-15 1
USGS 415530072334801 CT-EW 60 1954-03-30 1954-03-30 1
USGS 415536072330401 CT-EW 98 1969-04-29 1969-04-29 1
USGS 415548072311301 CT-EW 134 2004-05-10 2004-05-10 1
USGS 415552072311601 CT-EW 142 2004-05-04 2004-05-04 1
USGS 415552072311602 CT-EW 143 2004-05-04 2004-05-04 1
USGS 415553072393001 CT-WL 40 1969-04-29 1969-04-29 1
USGS 415555072352801 CT-EW 4 1969-07-31 1969-07-31 1
USGS 415616072342301 CT-EW 49 1953-05-27 1953-05-27 1
USGS 415617072320801 CT-EW 97 1969-04-29 1969-04-29 1
USGS 415621072430301 CT-EG 7 1916-12-06 1916-12-06 1
USGS 415622072432501 CT-EG 212 1969-04-23 1969-04-23 1
USGS 415637072423301 CT-EG 214 1969-04-23 1969-04-23 1
USGS 415657072322501 CT-EF 88 1969-05-08 1969-05-08 1
USGS 415720072325301 CT-EF 85 1969-08-05 1969-08-05 1
USGS 415721072324701 CT-EF 86 1966-08-05 1966-08-05 1
USGS 415722072323901 CT-EF 78 1969-04-30 1969-04-30 1
USGS 415727072324401 CT-EF 84 1969-05-08 1969-05-08 1
USGS 415734072304401 CT-EF 77 1969-04-30 1969-04-30 1
USGS 415734072355301 CT-EF 65 1957-08-28 1957-08-28 1
USGS 415823072395901 CT-SU 206 1969-04-28 1969-04-28 1
USGS 415827072361101 CT-EF 66 1969-05-01 1969-05-01 1
USGS 415835072333001 CT-EF 83 1969-05-08 1969-05-08 1
USGS 415835072345401 CT-EF 76 1969-04-29 1969-04-29 1
USGS 415837072305501 CT-EF 125 1992-09-03 1994-05-05 3
USGS 415847072301201 CT-EF 127 1993-08-11 1993-08-11 1
USGS 415858072325401 CT-EF 81 1969-05-08 1969-05-08 1
USGS 415903072303601 CT-EF 79 1969-05-08 1969-05-08 1
USGS 415905072303901 CT-EF 80 1969-05-08 1969-05-08 1
USGS 415911072443101 CT-SU 201 1972-02-24 1972-02-24 1
USGS 415924072304401 CT-EF 126 1993-08-30 1994-06-23 2
USGS 415934072430101 CT-SU 204 1969-04-28 1969-04-28 1
USGS 415939072403701 CT-SU 205 1969-04-28 1969-04-28 1
USGS 415957072304101 CT-EF 68 1969-05-08 1969-05-08 1
USGS 420009072392501 CT-SU 36 1916-12-06 1916-12-06 1
USGS 420011072440601 CT-SU 231 1972-02-22 1972-02-22 1
USGS 420036072350701 CT-EF 57 1969-04-30 1969-04-30 1
USGS 420041072304101 CT-EF 119 1988-08-11 1989-07-19 2
USGS 420041072304102 CT-EF 123 1989-07-19 1989-07-19 1
USGS 420042072374301 CT-SU 49 1969-05-12 1969-05-12 1
USGS 420056072424001 CT-SU 232 1988-06-30 1988-06-30 1
USGS 420100072322901 CT-EF 124 1989-07-13 1989-07-13 1
USGS 420108072344501 CT-EF 90 1969-05-12 1969-05-12 1
USGS 420112072454201 CT-SU 228 1971-11-22 1971-11-22 1
USGS 420114072344101 CT-EF 44 1969-05-12 1969-05-12 1
USGS 420117072344301 CT-EF 89 1969-05-12 1969-05-12 1
USGS 420123072311201 CT-EF 120 1988-08-12 1989-07-20 2
USGS 420123072311202 CT-EF 121 1988-08-12 1989-07-20 2
USGS 420123072311203 CT-EF 122 1988-08-12 1989-07-20 2
  group icon Middlesex County, Connecticut
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 01192675 DIVIEND BK NR ROCKY HILL, CT. 1967-09-07 1968-04-25 2
USGS 01192676 PORTLAND RES.NR PORTLAND,CT. 1969-05-09 1969-05-09 1
USGS 01192677 CARR BK NR GILDERSLEEVE, CT. 1967-06-23 1968-04-25 7
USGS 01192720 SAWMILL BK NR WESTFIELD, CT. 1971-05-14 1971-09-08 2
USGS 01192725 MOUNT HIGBY RES NR MIDDLEFIELD, CT. 1971-06-09 1972-05-03 2
USGS 01192750 TRIB TO MATTABESSET R NR WESTFIELD, CT. 1971-05-14 1971-09-08 2
USGS 01192790 COGINCHAUG R NR. DURHAM, CT. 1971-05-14 1971-09-08 3
USGS 01192795 COGINCHAUG R AT MEETING HOUSE HILL RD NR DURHAM,CT 2010-11-18 2012-09-05 25
USGS 01192800 PARMALEE BK NR DURHAM, CT. 1971-05-14 1971-09-08 2
USGS 01192820 ALLYN BK AT DURHAM, CT. 1971-05-14 1971-09-08 2
USGS 01192879 BESECK LAKE NEAR MIDDLEFIELD 1989-04-12 1989-08-01 5
USGS 01192883 COGINCHAUG RIVER AT MIDDLEFIELD, CT 1981-02-23 2012-09-05 451
USGS 01192889 LAUREL BK RES NR MIDDLEFIELD, CT. 1971-06-09 1971-06-09 1
USGS 01192890 COGINCHAUG R AT ROCKFALL, CT. 1962-04-25 1971-08-27 2
USGS 01192905 COGINCHAUG R. AT MIDDLETOWN, CT. 1971-08-27 1971-08-27 1
USGS 01192908 MATTABESSET R AT MIDDLETOWN, CT. 1971-08-26 1971-08-26 1
USGS 01192910 CONNECTICUT R AT MIDDLETOWN CT 1952-05-01 1967-07-05 8
USGS 01192911 CONNECTICUT R AT MIDDLETOWN, CT 1974-07-17 1991-09-04 233
USGS 011929115 CONNECTICUT RIVER AT BOAT HOUSE AT MIDDLETOWN, CT 2016-06-06 2020-10-07 48
USGS 01192913 SUMNER BK NR MIDDLETOWN, CT. 1971-05-14 1971-09-08 2
USGS 011929139 CRYSTAL LAKE NEAR MIDDLETOWN 1989-04-12 1989-08-21 5
USGS 01192916 DOOLEY POND NEAR MIDDLETOWN, CT 1990-05-03 1990-08-03 5
USGS 01192929 LONG HILL BROOK AT MILL ST AT MIDDLETOWN, CT 2022-04-25 2022-07-01 2
USGS 01192990 Connecticut River near Portland, CT 1993-07-13 1993-07-13 3
USGS 01193000 CONNECTICUT RIVER AT MIDDLETOWN, CT 1953-09-17 1994-06-22 41
USGS 01193039 CONNECTICUT R AT DART ISLAND AT MIDDLE HADDAM,C 1984-08-10 1984-08-10 1
USGS 01193050 CONNECTICUT RIVER AT MIDDLE HADDAM, CT 1956-06-27 2024-02-20 1260
USGS 01193100 CONNECTICUT R AT MARINA BOAT RAMP AT HADDAM, CT 2016-06-06 2020-10-07 41
USGS 01193125 HIGGANUM RESERVOIR AT HIGGANUM, CT 1990-05-03 1990-07-25 5
USGS 01193129 CANDLEWOOD HILL BROOK NEAR LITTLE CITY, CT 2022-04-24 2022-06-30 2
USGS 01193130 CANDLEWOOD HILL BK NR HIGGANUM, CT. 1971-05-14 1971-09-08 2
USGS 01193135 TRIB. TO BIBLE ROCK BK. NR. HIGGANUM, CT. 1971-09-01 1971-09-01 1
USGS 01193136 TRIB TO BIBLE ROCK BK NR HIGGANUM, CT. 1971-08-30 1971-08-30 1
USGS 01193140 CONNECTICUT R AT SHAILERVILLE CT. 1967-07-05 1968-08-27 5
USGS 01193141 CONNECTICUT R AT HAD. MARINA AT SHAILERVILLE, CT 1967-07-05 1968-08-27 3
USGS 01193142 CONNECTICUT R AT SHAILERVILLE, CT. 1967-06-23 1968-08-27 4
USGS 01193500 SALMON RIVER NEAR EAST HAMPTON, CT 1953-09-17 2024-02-26 962
USGS 01193600 FLAT BK NR EAST HAMPTON, CT 1971-05-14 2022-07-01 4
USGS 01193629 SALMON RIVER NR LEESVILLE, CT. 1984-11-08 1984-11-08 1
USGS 01193645 PINE BK NR MIDDLE HADDAM, CT. 1971-05-14 1971-09-08 2
USGS 01193720 BASHAN LAKE NR MOODUS, CT. 1984-08-22 1984-08-22 1
USGS 01193740 CONNECTICUT R AT EAST HADDAM, CT. dup 5 1968-08-27 1968-08-27 2
USGS 01193741 CONNECTICUT R AT EAST HADDAM, CT. dup 2 1968-08-27 1968-08-27 2
USGS 01193742 CONNECTICUT R AT EAST HADDAM,CT. 1968-08-27 1968-08-27 2
USGS 01193750 CONNECTICUT R AT EAST HADDAM, CT 1968-03-26 2010-08-12 319
USGS 01193751 CONNECTICUT R AT EAST HADDAM, CT. dup 1 1968-08-27 1968-08-27 2
USGS 01193752 CONNECTICUT R AT EAST HADDAM, CT. dup 3 1968-08-27 1968-08-27 2
USGS 01193753 CONNECTICUT R AT EAST HADDAM, CT. dup 4 1968-08-27 1968-08-27 2
USGS 01193770 CONNECTICUT RIVER AT RICH ISLAND NR HADDAM, CT. 1984-08-10 1984-08-10 1
USGS 01193780 CONNECTICUT R NR CHESTER, CT. 1968-03-26 1968-03-26 1
USGS 01193794 ROARING BROOK NUMBER 2 NR EAST HADDAM, CT 2022-04-24 2022-06-30 2
USGS 01193800 HEMLOCK VALLEY BK AT HADLYME, CT. 1962-04-24 1971-09-08 3
USGS 01193850 PATTACONK RESERVOIR NEAR CHESTER, CT 1990-05-30 1990-08-14 4
USGS 01193875 DEEP R NR DEEP RIVER, CT. 1971-07-02 1971-07-02 1
USGS 01193880 EIGHTMILE R NEAR MILLINGTON, CT. 1971-05-14 1971-09-08 2
USGS 01193898 LAKE HAYWARD NEAR COLCHESTER 1989-04-14 1989-08-29 5
USGS 01194000 EIGHTMILE RIVER AT NORTH PLAIN, CT 1956-05-04 2016-08-03 17
USGS 01194720 MESSERSCHMIDT POND NEAR POND MEADOW 1990-05-25 1990-08-07 5
USGS 01194727 CONNECTICUT RIVER ABOVE NORTH COVE AT ESSEX, CT. 1975-06-12 1975-06-12 1
USGS 01194730 WRIGHTS PD. AT POND MEADOW, CT. 1971-08-30 1990-08-07 6
USGS 01194742 MILL PD. AT CENTERBROOK, CT. 1971-08-30 1971-08-30 1
USGS 01194750 CONNECTICUT RIVER AT ESSEX, CT 2011-05-13 2023-09-27 195
USGS 01194795 CONNECTICUT R ABOVE RR BRIDGE AT OLD LYME, CT. 1975-06-12 1975-06-12 1
USGS 01194820 CONNECTICUT RIVER AT MOUTH AT LYNDE POINT, CT. 1975-06-12 1975-06-12 1
USGS 411819072220301 CT-OS 269 1978-04-29 1978-09-06 2
USGS 411819072220302 CT-OS 270 1978-04-27 1978-09-06 2
USGS 411935072234601 CT-OS 263 1972-04-18 1972-04-18 1
USGS 411942072224001 CT-OS 262 1972-04-18 1972-04-18 1
USGS 412021072224201 CT-ES 115 1972-04-18 1972-04-18 1
USGS 412039072245501 CT-ES 114 1972-04-11 1972-04-11 1
USGS 412057072230700 ESSEX MARINE LAB PRECP AT ESSEX CT 1971-04-05 1971-11-01 11
USGS 412057072251701 CT-ES 113 1972-04-11 1972-04-11 1
USGS 412106072265101 CT-ES 112 1972-04-18 1972-04-18 2
USGS 412136072243501 CT-ES 111 1972-04-18 1972-04-18 1
USGS 412212072233101 CT-ES 90 1971-06-01 1971-06-01 1
USGS 412212072233102 CT-ES 91 1971-06-01 1971-06-01 1
USGS 412216072274701 CT-DR 6 1971-07-02 1971-07-02 1
USGS 412242072255501 CT-DR 19 1972-04-11 1972-04-11 1
USGS 412244072243801 CT-DR 21 1988-11-15 1988-11-15 1
USGS 412249072263401 CT-DR 18 1972-04-11 1972-04-11 1
USGS 412252072242701 CT-DR 22 1988-11-15 1988-11-15 1
USGS 412252072304101 CT-CH 269 1989-08-15 1989-08-15 1
USGS 412355072294701 CT-CH 253 1972-05-04 1972-05-04 1
USGS 412402072295301 CEDAR LAKE NR CHESTER CT 1983-08-10 1983-08-10 1
USGS 412411072272301 CT-CH 263 1972-04-11 1972-04-11 1
USGS 412430072305401 CT-CH 270 1989-08-29 1989-08-29 1
USGS 412444072263101 CT-CH 266 1972-04-11 1972-04-11 1
USGS 412531072263801 CT-CH 265 1972-04-11 1972-04-11 1
USGS 412537072312101 Turkey Hill Res nr Chester, CT 2005-08-15 2005-08-15 30
USGS 412546072314701 Turkey Hill Res Soil Core S2 nr Chester, CT 2005-08-15 2005-08-15 4
USGS 412548072314301 Turkey Hill Res Soil Core S1 nr Chester, CT 2005-08-15 2005-08-15 4
USGS 412549072314601 Turkey Hill Res Soil Core S3 nr Chester, CT 2005-08-15 2005-08-15 4
USGS 412601072424201 CT-D 109 1972-04-06 1972-04-06 1
USGS 412630072401401 CT-D 126 1988-10-06 1988-10-06 1
USGS 412633072440101 CT-D 105 1972-04-06 1972-04-06 1
USGS 412643072314301 CT-HD 472 1993-08-04 1995-04-24 3
USGS 412651072223701 CT-EHD 331 1988-10-12 1988-10-12 1
USGS 412654072281601 CT-HD 466 1978-05-26 1978-05-26 1
USGS 412654072281602 CT-HD 467 1978-05-26 1978-05-26 1
USGS 412656072280201 CT-HD 468 1978-05-30 1978-05-30 1
USGS 412656072280202 CT-HD 469 1978-05-25 1978-05-25 1
USGS 412705072404701 CT-D 128 1989-03-01 1989-03-01 1
USGS 412706072294201 CT-HD 445 1972-04-19 1972-04-19 1
USGS 412711072183701 CT-EHD 322 1972-04-21 1972-04-21 1
USGS 412734072412601 CT-D 125 1987-09-02 1989-06-15 4
USGS 412734072415901 CT-D 20 1971-12-08 1972-05-04 4
USGS 412738072414701 CT-D 62 1972-03-29 1972-03-29 2
USGS 412800072305401 CT-HD 429 1972-04-19 1972-04-19 1
USGS 412800072374401 CT-HD 420 1972-04-19 1972-04-19 1
USGS 412804072403201 CT-D 127 1989-03-01 1989-03-01 1
USGS 412807072403501 CT-D 107 1972-04-06 1972-04-06 1
USGS 412813072403001 CT-D 50 1971-05-25 1971-10-08 3
USGS 412828072314501 CT-HD 424 1972-04-19 1972-04-19 1
USGS 412831072235901 CT-EHD 323 1972-04-21 1972-04-21 1
USGS 412841072273201 CT-EHD 324 1972-04-21 1972-04-21 1
USGS 412848072303001 CT-HD 470 1981-03-31 1981-03-31 1
USGS 412852072311401 CT-HD 431 1972-05-03 1972-05-03 1
USGS 412852072394601 CT-D 108 1972-04-06 1972-04-06 1
USGS 412925072424101 CT-MF 218 1989-06-16 1989-06-16 1
USGS 412931072434401 CT-MF 215 1989-06-12 1989-06-12 1
USGS 412935072434001 CT-MF 216 1989-06-12 1989-06-12 1
USGS 412935072434002 CT-MF 217 1989-06-12 1989-06-12 1
USGS 412958072420001 CT-MF 197 1972-04-06 1972-04-06 1
USGS 413000072403302 CT-MT 1SP 1971-05-25 1971-05-25 1
USGS 413000072403701 CT-MT 322 1971-05-25 1971-05-25 1
USGS 413009072473101 CT-MF 214 1987-09-03 1989-06-16 4
USGS 413010072413701 CT-MF 213 1987-09-03 1989-06-16 4
USGS 413018072434801 CT-MF 196 1972-04-05 1972-04-05 1
USGS 413019072265001 CT-EHD 321 1972-04-21 1972-04-21 1
USGS 413025072383601 CT-MT 350 1972-04-04 1972-04-04 1
USGS 413028072193801 CT-EHD 316 1971-06-04 1971-06-04 1
USGS 413035072380301 CT-MT 355 1972-04-04 1972-04-04 1
USGS 413044072375701 CT-MT 394 1993-08-13 1994-06-24 2
USGS 413044072431801 BESECK LAKE NR MIDDLEFIELD CT 1983-08-10 1983-08-10 1
USGS 413048072441501 CT-MF 200 1972-04-05 1972-04-05 1
USGS 413050072393301 CT-MT 356 1972-04-04 1972-04-04 1
USGS 413058072441601 CT-MF 165 1953-05-16 1953-05-16 1
USGS 413101072200701 CT-EHD 315 1957-08-20 1957-08-20 1
USGS 413103072434601 CT-MF 173 1971-05-28 1971-05-28 1
USGS 413106072414001 CT-MF 164 1953-05-16 1953-05-16 1
USGS 413106072424901 CT-MF 202 1972-04-05 1972-04-05 1
USGS 413110072402001 CT-MT 353 1972-04-04 1972-04-04 1
USGS 413121072193501 CT-EHD 320 1972-01-21 1972-04-21 2
USGS 413121072380401 CT-MT 357 1972-04-04 1972-04-04 1
USGS 413131072424701 CT-MF 194 1972-04-05 1972-04-05 1
USGS 413135072393501 CT-MT 358 1972-04-04 1972-04-04 1
USGS 413149072414301 CT-MF 201 1972-04-05 1972-04-05 1
USGS 413152072334901 CT-MT 266 1956-06-29 1956-06-29 1
USGS 413158072421401 CT-MF 172 1957-08-23 1957-08-23 1
USGS 413209072300301 CT-EHM 382 1972-04-27 1972-04-27 1
USGS 413212072343601 CT-MT 393 1988-08-31 1995-06-20 2
USGS 413216072334701 CT-MT 285 1956-06-28 1956-06-28 1
USGS 413226072421501 CT-MF 199 1972-04-05 1972-04-05 1
USGS 413229072365101 CT-MT 354 1972-04-06 1972-04-06 1
USGS 413235072335101 CT-MT 262 1956-06-28 1956-06-28 1
USGS 413244072411601 CT-MT 361 1972-04-05 1972-04-05 1
USGS 413257072332902 CT-MT 288 1956-06-27 1956-07-13 3
USGS 413300072333402 CT-MT 287 1956-07-07 1956-07-07 1
USGS 413307072361402 CT-MT 349 1972-04-06 1972-04-06 1
USGS 413308072321501 CT-EHM 379 1972-04-27 1972-04-27 2
USGS 413316072421201 CT-MT 360 1972-04-05 1972-04-05 1
USGS 413331072373201 CT-MT 389 1971-05-24 1972-05-03 2
USGS 413331072373401 CT-MT 390 1971-05-24 1971-05-24 1
USGS 413331072373501 CT-MT 391 1971-05-24 1971-05-24 1
USGS 413335072281601 CT-EHM 413 2000-08-30 2000-08-30 1
USGS 413340072272001 CT-EHM 415 2000-09-05 2000-09-05 1
USGS 413348072353001 CT-P 114 1988-10-04 1988-10-04 1
USGS 413355072281301 CT-EHM 412 2000-08-10 2000-08-10 1
USGS 413358072274601 CT-EHM 416 2000-11-29 2000-11-29 1
USGS 413410072282901 CT- EHM 411 2000-09-12 2000-09-12 1
USGS 413412072281701 CT-EHM 414 2000-09-05 2000-09-05 1
USGS 413424072334001 CT-P 116 1989-01-04 1989-01-04 1
USGS 413427072355501 CT- P 117 1994-07-29 2017-04-17 10
USGS 413432072314901 CT-EHM 381 1972-04-27 1972-04-27 1
USGS 413433072300801 CT-042 EHM 358 1957-08-20 1957-08-20 1
USGS 413435072300601 CT-EHM 363 1957-08-20 1957-08-20 1
USGS 413437072300101 CT-EHM 359 1957-08-20 1957-08-20 1
USGS 413451072355101 CT-P 66 1953-05-18 1953-05-18 1
USGS 413453072342901 CT-P 36 1953-06-02 1953-06-02 1
USGS 413524072413601 CT-MT 363 1972-04-05 1972-04-05 1
USGS 413553072351601 CT-P 113 1988-08-31 1988-08-31 1
USGS 413557072343601 CT-P 115 1988-10-04 1988-10-04 1
USGS 413608072420701 Mattabasset River behind WAWA, CT 1995-09-27 1995-09-27 1
USGS 413615072423001 Mattabasset River near Little River, CT 1994-08-10 1994-08-10 2
USGS 413615072425401 Mattabessett R at Division St at East Berlin, CT 1995-09-27 1995-09-27 1
USGS 413617072305701 CT-EHM 364 1971-06-04 1971-06-04 1
USGS 413618072361301 CT-P 69 1969-05-09 1969-05-09 1
USGS 413621072391801 CT-CR 285 1969-02-25 1969-02-25 1
USGS 413624072415701 CT-CR 88 1954-04-03 1954-04-03 1
USGS 413642072381101 CT-CR 283 1969-04-24 1969-04-24 1
USGS 413654072380601 CT-CR 287 1969-04-24 1969-04-24 1
USGS 413658072384901 CT-MT 275 1956-06-29 1956-06-29 1
USGS 413708072424801 Mattabasset Rv. at East Berlin, CT 1995-09-27 1995-09-27 1
USGS 413731072373401 CT-P 110 1987-08-31 1989-07-31 4
USGS 413731072373402 CT-P 111 1987-08-31 1989-07-31 4
USGS 413731072373403 CT-P 112 1987-08-31 1994-06-23 7
USGS 413810072375801 CT-CR 302 1969-12-01 1969-12-04 2
  group icon New Haven County, Connecticut
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 01195115 HAMMONASSET RIVER NR. NORTH MADISON, CT. 1971-05-14 1971-09-08 2
USGS 412926072452601 CT-WLD 141 1962-03-09 1962-03-09 1
  group icon New London County, Connecticut
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 01193250 JUDD BK NR COLCHESTER, CT. 1971-05-14 1971-09-08 2
USGS 01193490 DICKINSON CK NR WESTCHESTER, CT. 1971-05-14 1971-09-08 2
USGS 011937209 PICKEREL LAKE NEAR MOODUS 1989-04-14 1989-08-02 4
USGS 01193795 ROARING BK AT HADLYME, CT. 1971-05-14 1971-09-08 2
USGS 01193877 CONNECTICUT RIVER ABOVE SELDON CK AT BROCKWAY,CT 1975-06-12 1975-06-12 1
USGS 01194500 EAST BRANCH EIGHTMILE RIVER NEAR NORTH LYME, CT 1956-05-04 2014-09-19 4
USGS 01194510 CEDAR POND BROOK AT BEAVER BK RD NR NORTH LYME, CT 2022-04-24 2022-06-30 2
USGS 01194755 CONNECTICUT RIVER AT HAYDENS POINTS NEAR ESSEX, CT 2020-06-16 2023-09-13 90
USGS 01194796 CONNECTICUT RIVER AT OLD LYME, CT 2019-06-26 2024-03-04 229
USGS 01194798 CONNECTICUT RIVER BELOW RR BRIDGE AT OLD LYME, CT 2020-06-16 2023-09-27 133
USGS 411748072152501 CT-OL 21 1965-05-18 1965-05-18 1
USGS 411750072152501 CT-OL 23 1965-05-18 1965-05-18 1
USGS 412021072174901 CT-OL 87 1972-04-20 1972-04-20 1
USGS 412027072191801 CT-OL 85 1972-04-20 1972-04-20 1
USGS 412108072152701 CT-ELY 32 1965-07-08 1965-07-08 1
USGS 412142072173901 CT-OL 86 1972-04-20 1972-04-20 1
USGS 412204072175201 CT-L 227 1972-04-20 1972-04-20 2
USGS 412226072213601 CT-L 228 1972-04-20 1972-04-20 2
USGS 412320072224401 CT-L 231 1972-04-20 1972-04-20 2
USGS 412446072183501 CT-L 230 1972-04-20 1972-04-20 2
USGS 412857072155901 CT-SM 8 1988-10-12 1988-10-12 1
USGS 413228072323501 CT-CO 348 2000-08-08 2000-08-08 1
USGS 413241072234701 BABCOCK POND NR COLCHESTER CT 1995-05-19 1995-07-31 4
USGS 413247072244101 CT-CO 323 1972-06-01 1972-06-01 2
USGS 413247072260101 CT-CO 341 2000-08-02 2000-08-02 1
USGS 413249072261701 CT-CO 344 2000-08-03 2000-08-03 1
USGS 413250072245601 CT-CO 342 2000-08-02 2000-08-02 1
USGS 413250072260501 CT-CO 340 2000-07-31 2000-07-31 1
USGS 413252072243901 CT-CO 317 1971-05-20 1971-10-08 2
USGS 413254072255701 CT-CO 346 2000-08-07 2000-08-07 1
USGS 413302072204001 CT-CO 336 1988-08-05 1988-08-05 1
USGS 413305072185401 CT-028 CO 265 1957-08-21 1957-08-21 1
USGS 413306072230001 CT-CO 349 2000-08-09 2000-08-09 1
USGS 413350072203601 CT-CO 266 1971-05-20 1971-10-08 2
USGS 413350072230901 CT- CO 339 2000-08-09 2000-08-09 1
USGS 413351072225601 CT-CO 345 2000-08-07 2000-08-07 1
USGS 413403072202401 CT-CO 267 1971-05-20 1971-05-20 1
USGS 413404072202301 CT-CO 315 1971-05-20 1971-05-20 1
USGS 413413072233001 CT-CO 343 2000-08-03 2000-08-03 1
USGS 413424072221401 CT-CO 351 2000-08-29 2000-08-29 1
USGS 413430072221501 CT-CO 352 2000-08-30 2000-08-30 1
USGS 413443072223401 CT-CO 347 2000-08-08 2000-08-08 1
USGS 413449072224401 CT-CO 350 2000-08-10 2000-08-10 1
USGS 413454072194701 CT-CO 316 1971-05-20 1971-10-08 2
USGS 413518072221702 CT-CO 333 1972-05-23 1972-05-23 1
USGS 413724072192101 CT-LB 2 1971-05-28 1971-05-28 1
  group icon Tolland County, Connecticut
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 01184280 SCANTIC R NR NORTH SOMERS, CT. 1967-03-18 1968-04-25 4
USGS 01184290 WATCHAUG BROOK NR NORTH SOMERS, CT. 1967-09-07 1968-04-25 2
USGS 01184300 GILLETTE BK AT SOMERS, CT. 1967-09-07 1968-04-25 2
USGS 01184325 SCANTIC RIVER AT FOUR BRIDGES ROAD, SOMERS, CT 1992-05-07 1992-06-06 9
USGS 01184350 SCANTIC R AT SOMERSVILLE, CT. 1968-08-14 1968-08-14 1
USGS 01184444 Broad Brook at Meadow Brook Road nr Ellington, CT 2002-09-18 2002-09-18 1
USGS 01184445 Kimballs Brook at Route 83 near Ellington, CT 2002-09-18 2002-09-18 1
USGS 01184448 Kibbes Brook at Ellington, CT 2002-09-18 2002-09-18 1
USGS 01184455 MUDDY BROOK AT ELLINGTON, CT 1992-05-07 1992-06-06 11
USGS 01184457 Muddy Brook at Muddy Brook Road at Ellington, CT 2002-09-19 2002-09-19 1
USGS 01184460 Broad Brook at Hatheway Road at Ellington, CT 2002-09-19 2002-09-19 1
USGS 01184465 Broad Brook at Broad Brook Road nr Broad Brook, CT 2002-09-19 2002-09-19 1
USGS 01184468 Creamery Brook at Route 140 nr Broad Brook, CT 2002-09-19 2002-09-19 1
USGS 01191900 CHARTER BK NR CRYSTAL LAKE, CT. 1967-09-07 1968-04-25 3
USGS 01192000 SHENIPSIT LK AT ROCKVILLE, CT. 1954-04-21 1968-04-29 2
USGS 01192050 HOCKANUM R AT ROCKVILLE, CT. 1968-08-14 2024-02-05 235
USGS 01192055 HOCKANUM R NR ROCKVILLE, CT. 1968-08-14 1968-08-14 1
USGS 01192200 TANKERHOOSEN R AT VERNON CENTER, CT. 1967-09-07 1968-04-25 2
USGS 01193200 HOLBROOK POND NEAR HEBRON, CT 1990-04-27 1990-07-23 4
USGS 01193210 RAYMOND BK NR AMSTON, CT. 1971-05-14 1971-09-08 2
USGS 413634072212800 AMSTON PRECP NR AMSTON CT 1971-04-05 1971-11-01 8
USGS 413640072200601 CT-HB 39 1988-10-12 1988-10-12 1
USGS 413655072214501 CT-HB 38 1988-08-10 1988-08-10 1
USGS 413656072194301 CT-HB 31 1972-04-27 1972-04-27 1
USGS 413712072195001 CT-HB 40 1988-10-12 1988-10-12 1
USGS 413722072200601 CT-HB 2 1971-05-28 1971-05-28 1
USGS 413735072200601 CT-HB 1 1957-08-20 1971-05-28 2
USGS 413738072221901 CT-HB 32 1972-04-27 1972-04-27 1
USGS 413838072212901 CT-HB 25 1972-04-27 1972-04-27 1
USGS 413853072244801 CT-HB 41 1989-03-13 1989-03-13 1
USGS 413948072222201 CT-HB 23 1972-04-27 1972-04-27 1
USGS 413954072230401 CT-HB 30 1972-04-27 1972-04-27 1
USGS 414003072260601 CT-HB 29 1972-04-24 1972-04-24 1
USGS 414008072225901 CT-HB 10 1971-05-28 1971-05-28 1
USGS 414040072212001 CT-HB 26 1972-04-27 1972-04-27 1
USGS 414105072262301 CT-HB 27 1972-04-24 1972-04-24 1
USGS 414741072281001 CT-BO 11 1988-07-29 1988-07-29 1
USGS 414741072281201 CT-BO 10 1988-07-29 1990-07-31 73
USGS 414806072281801 CT-V 8 1953-05-20 1953-05-20 1
USGS 414853072293101 CT-V 47 1953-05-20 1953-05-20 1
USGS 414906072290701 CT-V 57 1957-08-27 1957-08-27 1
USGS 414918072300601 CT-V 2 1968-05-03 1968-05-03 1
USGS 414926072300801 CT-V 96 1987-06-22 1994-07-26 14
USGS 414935072280601 CT-V 68 1968-04-24 1968-04-24 1
USGS 414936072300201 CT-V 95 1987-06-30 1988-11-17 4
USGS 414942072265601 CT-V 97 1995-07-17 1995-07-17 1
USGS 414946072294801 CT-V 72 1969-05-01 1969-05-01 1
USGS 415010072282501 CT-V 66 1968-04-24 1968-04-24 1
USGS 415013072263901 CT-V 94 1987-06-26 1988-07-28 2
USGS 415019072283701 CT-V 67 1968-04-24 1968-04-24 1
USGS 415030072284501 CT-V 69 1968-04-24 1968-04-24 1
USGS 415032072293801 CT- V 98 2003-06-03 2017-05-09 3
USGS 415045072285001 CT-V 70 1968-04-24 1968-04-24 1
USGS 415102072291801 CT-V 91 1987-06-30 1988-10-27 3
USGS 415123072292601 CT-V 90 1987-06-30 1988-06-30 2
USGS 415134072292601 CT-V 89 1987-06-23 1988-12-02 12
USGS 415138072290601 CT-V 71 1969-04-30 1969-04-30 1
USGS 415155072284601 CT-V 92 1987-06-23 1994-07-26 4
USGS 415157072291301 CT HWY RT-74 VERNON, CT 2019-06-13 2021-05-09 21
USGS 415201072284601 CT-V 93 1987-06-23 1988-06-30 2
USGS 415318072263801 CT-EL 22 1953-05-20 1953-05-20 1
USGS 415339072290801 CT-EL 61 1969-04-26 1969-04-26 1
USGS 415359072264801 CT-EL 28 1953-05-20 1953-05-20 1
USGS 415414072280701 CT-EL 34 1968-05-14 1968-05-14 1
USGS 415434072262501 CT-EL 27 1953-05-20 1953-05-20 1
USGS 415441072274101 CT-EL 86 1987-07-21 1994-09-02 4
USGS 415442072274601 CT-EL 143 2004-05-05 2004-05-05 1
USGS 415442072274602 CT-EL 144 2004-05-05 2004-05-05 1
USGS 415444072243301 CT-TO 8 1988-09-08 1988-09-08 1
USGS 415450072272801 CT-EL 83 1987-07-21 1988-11-18 3
USGS 415450072285301 CT-EL 141 1994-07-27 1994-07-27 1
USGS 415450072290901 CT-EL 145 2004-04-29 2004-04-29 1
USGS 415450072290902 CT-EL 146 2004-04-28 2004-04-28 1
USGS 415450072290903 CT-EL 147 2004-04-28 2004-04-28 1
USGS 415453072273801 CT-EL 84 1987-07-21 1988-07-05 2
USGS 415458072291901 CT-EL 82 1987-07-31 2004-04-29 4
USGS 415503072271401 CT-EL 59 1969-04-24 1969-04-24 1
USGS 415503072283401 CT-EL 60 1969-04-26 1969-04-26 1
USGS 415511072284201 CT-EL 85 1987-06-22 1988-11-07 12
USGS 415530072290201 CT-EL 133 1993-08-14 1994-05-04 2
USGS 415542072273601 CT-EL 142 1994-07-27 2004-05-07 2
USGS 415546072303501 CT-EL 76 1978-08-21 1978-08-21 1
USGS 415547072303001 CT-EL 77 1978-08-21 1978-08-21 1
USGS 415551072302701 CT-EL 78 1978-08-23 1978-08-23 1
USGS 415616072303801 CT-EL 81 1987-06-22 1994-07-26 9
USGS 415618072271901 CT-EL 62 1969-04-26 1969-04-26 1
USGS 415744072270101 CT-SO 80 1969-04-30 1969-04-30 1
USGS 415807072254501 CT-SO 24 1953-05-26 1953-05-26 1
USGS 415837072265801 CT-SO 84 1969-05-12 1969-05-12 1
USGS 415846072293301 CT-SO 83 1969-05-01 1969-05-01 1
USGS 415856072263101 CT- SO 110 1992-09-03 2009-09-21 6
USGS 415902072254901 CT-SO 85 1969-05-12 1969-05-12 1
USGS 415910072265601 CT-SO 71 1969-05-12 1969-05-12 1
USGS 415934072272501 CT-SO 42 1953-05-26 1953-05-26 1
USGS 415949072265001 CT-SO 82 1969-05-01 1969-05-01 1
USGS 420027072262001 CT- SO 362 2003-07-25 2017-08-07 5
USGS 420103072302101 CT-SO 108 1988-08-11 1989-07-19 2
USGS 420103072302102 CT-SO 109 1988-08-11 1989-07-19 2
USGS 420113072275001 CT-SO 61 1953-05-26 1953-05-26 1
USGS 420151072281201 CT-SO 81 1969-04-30 1969-04-30 1
  group icon Hampden County, Massachusetts
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 01177120 SCHOOLHOUSE BROOK NEAR WEST SPRINGFIELD, MA 1973-10-03 1973-10-03 1
USGS 01177200 CONNECTICUT RIVER AT WEST SPRINGFIELD, MA 1973-05-11 1973-05-25 2
USGS 01177300 NORTH BRANCH MILL RIVER NEAR WILBRAHAM, MA 1957-08-15 1973-03-21 7
USGS 01177500 WATERSHOPS POND AT SPRINGFIELD, MA 2010-07-28 2010-11-02 4
USGS 01178000 MILL RIVER AT SPRINGFIELD, MA 1955-10-11 2011-03-17 73
USGS 01183700 PECOUSIC BROOK NEAR SPRINGFIELD, MA 1971-09-20 1973-03-21 4
USGS 01183750 CONNECTICUT RIVER AT AGAWAM, MA 1973-05-11 1980-09-30 57
USGS 01183780 THREEMILE BROOK NEAR AGAWAM, MA 1973-10-03 1973-10-03 1
USGS 01183810 LONGMEADOW BK AT PONDSIDE RD NR LONGMEADOW, MA 1973-10-03 1973-10-03 1
USGS 01183850 CONNECTICUT RIVER NEAR LONGMEADOW, MA 1993-07-14 1997-09-08 7
USGS 01184200 STILL BROOK NEAR WEST AGAWAM, MA 1957-08-15 1973-03-21 7
USGS 01184277 SCANTIC RIVER NEAR HAMPDEN, MA 1973-10-17 1973-10-17 1
USGS 420236072405801 MA-AFW 18 1973-12-12 1973-12-12 1
USGS 420310072313101 MA-ELW 4 1958-02-28 1958-02-28 1
USGS 420312072375801 MA-AFW 51 1958-04-17 1958-04-17 1
USGS 420322072391801 MA-AFW 31 AGAWAM, MA 2003-06-03 2017-08-08 5
USGS 420330072354501 MA-LXW 19 1958-04-18 1958-04-18 1
USGS 420339072411701 MA-AFW 32 AGAWAM, MA 2003-06-03 2017-08-07 3
USGS 420340072372701 MA-AFW 9 1973-12-11 1973-12-11 1
USGS 420344072253401 MA-HDW 12 1973-12-10 1973-12-10 1
USGS 420345072310301 MA-ELW 43 1973-12-11 1973-12-11 1
USGS 420354072381001 SILVER LAKE, AGAWAM, MA 2003-08-20 2003-08-20 1
USGS 420400072370201 MA-AFW 30 AGAWAM, MA 2003-06-03 2017-08-08 3
USGS 420421072410501 MA-AFW 48 1958-04-17 1958-04-17 1
USGS 420424072234201 MA-HDW 15 1973-12-10 1973-12-10 1
USGS 420456072292001 MA-ELW 66 1973-12-11 1973-12-11 1
USGS 420508072351401 SPRINGFIELD WWTF CONNECTICUT R @ SPRINGFIELD, MA 2004-04-08 2005-09-08 14
USGS 420512072321701 MA-SXW 19 1958-04-15 1958-04-15 1
USGS 420519072345701 MILL RIVER AT MOUTH, SPRINGFIELD, MA 2010-10-18 2011-03-17 3
USGS 420525072244401 MA-HDS 1 1972-11-02 1972-11-02 1
USGS 420536072253101 MA-XJW 23 1958-03-28 1958-03-28 1
USGS 420536072340901 Sewer at Mill River CSO, Springfield, MA 2011-03-17 2011-03-17 1
USGS 420612072353601 MA-SXW 102 1958-04-15 1958-04-15 1
USGS 420614072271101 MA-XJW 156 1973-12-10 1973-12-10 1
USGS 420702072435601 WESTFIELD WWTF OUTFALL TO WEST R @ WESTFIELD, MA 2004-04-08 2005-09-08 11
USGS 420721072364301 MA-SXW 3 1958-02-28 1958-06-18 2
USGS 420738072244501 MA-XJW 219 1973-12-10 1973-12-10 1
USGS 420757072390101 MA-XCW 144 WEST SPRINGFIELD, MA 2003-07-31 2017-08-09 7
USGS 420908072373301 CHICOPEE WWTF OUTFALL CONNECTICUT R @ CHICOPEE, MA 2004-04-08 2005-09-07 15
USGS 421132072365001 HOLYOKE WWTF OUTFALL @ CONNECTICUT R @ HOLYOKE, MA 2004-04-08 2005-09-08 11
  group icon Worcester County, Massachusetts
Agency Site Number Site Name Period of Record
Begin Date End Date Samples
USGS 423542072031001 SEAMAN PAPER WWTF TO OTTER R, NR BALDWINVILLE, MA 2004-04-07 2005-09-07 11