CONNECTICUT RIVER BASIN 01184000 CONNECTICUT RIVER AT THOMPSONVILLE, CT--Continued WATER-QUALITY RECORDS PERIOD OF RECORD.--Water years 1956, 1966 to current year. PERIOD OF DAILY RECORD.-- SPECIFIC CONDUCTANCE: October 1974 to current year. WATER TEMPERATURES: October 1955 to September 1956, October 1973 to current year. INSTRUMENTATION.--Water-quality monitor since October 1973. REMARKS.--Interruptions in the record are due to malfunctions of the instrument. Instantaneous records are representative of the cross section while continuous records are based on point samples. The instantaneous record values will not necessarily fall within the corresponding daily range of the continuous records. Extremes for period of daily record and current year are for those values reported. EXTREMES FOR PERIOD OF DAILY RECORD.-- SPECIFIC CONDUCTANCE: Maximum, 443 microsiemens Feb. 15, 1992; minimum, 46 microsiemens April 2, 1977. WATER TEMPERATURES: Maximum, 36.5C Aug. 30, 1977; minimum, 0.0C on many days during winter periods. EXTREMES FOR CURRENT YEAR.-- SPECIFIC CONDUCTANCE: Maximum, 180 microsiemens May 19, 20; minimum, 56 microsiemens April 7. WATER TEMPERATURES: Maximum, 25.0C July 16; minimum, 0.0C Feb. 16, Mar. 13. WATER-QUALITY DATA, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DIS- PH OXYGEN, COLI- ENTERO- CHARGE, SPE- WATER DIS- FORM, COCCI HARD- INST. CIFIC WHOLE SOLVED FECAL, ME,MF NESS CUBIC CON- FIELD TEMPER- TEMPER- TUR- OXYGEN, (PER- 0.45 WATER TOTAL FEET DUCT- (STAND- ATURE ATURE BID- DIS- CENT UM-MF TOTAL (MG/L DATE TIME PER ANCE ARD AIR WATER ITY SOLVED SATUR- (COLS./ (COL / AS SECOND (US/CM) UNITS) (DEG C) (DEG C) (NTU) (MG/L) ATION) 100 ML) 100 ML) CACO3) (00061) (00095) (00400) (00020) (00010) (00076) (00300) (00301) (31616) (31649) (00900) OCT 09... 0950 8320 145 7.8 19.0 16.5 .90 9.6 97 120 K4 -- 09... 0955 8510 154 7.8 19.0 16.5 .90 9.6 97 -- -- 49 NOV 17... 0840 14200 121 7.5 2.0 3.5 1.5 12.3 92 -- -- 31 DEC 12... 0935 9720 142 7.5 .0 2.5 1.2 13.1 96 220 42 -- 12... 0945 9720 142 7.5 .0 2.5 1.2 13.1 96 220 42 36 JAN 13... 1020 52300 79 7.3 4.5 1.5 9.0 14.0 100 -- -- 22 FEB 10... 1150 10000 127 7.5 5.0 1.5 1.7 13.7 97 -- -- 37 10... 1200 10000 127 7.5 5.0 1.5 1.7 13.7 97 740 260 -- MAR 13... 1040 47900 93 7.8 -1.0 1.5 6.7 14.7 103 -- -- 24 APR 08... 0940 59100 69 7.5 12.0 5.5 29 12.6 100 21 24 -- 08... 1000 59000 69 7.5 12.0 5.5 29 12.6 100 -- -- 20 MAY 07... 0915 31900 91 7.5 17.5 14.5 8.2 9.9 97 -- -- 26 JUN 08... 1130 6240 129 7.7 20.0 18.0 .25 8.7 93 37 K7 -- 08... 1300 6240 129 7.7 20.0 18.0 .25 8.7 93 37 K7 -- JUL 08... 1110 19100 99 7.4 21.5 21.5 4.9 8.0 90 -- -- 33 08... 1120 19100 99 7.4 21.5 21.5 4.9 8.0 90 76 25 -- AUG 12... 1020 7160 147 7.4 29.0 25.0 .70 6.3 76 96 K7 43 SEP 03... 1030 6240 153 7.5 22.5 23.0 1.1 7.0 81 1100 67 46 CONNECTICUT RIVER BASIN 01184000 CONNECTICUT RIVER AT THOMPSONVILLE, CT--Continued WATER-QUALITY DATA, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 CAR- BICAR- ALKA- SOLIDS, MAGNE- POTAS- BONATE BONATE LINITY CHLO- FLUO- SILICA, RESIDUE CALCIUM SIUM, SODIUM, SIUM, WATER WATER WAT DIS SULFATE RIDE, RIDE, DIS- AT 180 DIS- DIS- DIS- DIS- DIS IT DIS IT TOT IT DIS- DIS- DIS- SOLVED DEG. C SOLVED SOLVED SOLVED SOLVED FIELD FIELD FIELD SOLVED SOLVED SOLVED (MG/L DIS- DATE (MG/L (MG/L (MG/L (MG/L MG/L AS MG/L AS MG/L AS (MG/L (MG/L (MG/L AS SOLVED AS CA) AS MG) AS NA) AS K) CO3 HCO3 CACO3 AS SO4) AS CL) AS F) SIO2) (MG/L) (00915) (00925) (00930) (00935) (00452) (00453) (39086) (00945) (00940) (00950) (00955) (70300) OCT 09... -- -- -- -- 0 45 37 -- -- -- -- -- 09... 16 2.1 9.2 1.9 -- -- -- 8.3 15 <.10 3.6 91 NOV 17... 9.7 1.7 9.2 1.3 0 26 21 7.5 14 <.10 5.5 69 DEC 12... -- -- -- -- 0 29 24 -- -- -- -- -- 12... 11 1.9 11 1.3 0 29 24 10 17 <.10 5.8 85 JAN 13... 7.0 1.1 5.1 .85 0 16 13 6.0 7.9 <.10 5.3 56 FEB 10... 12 1.6 8.2 1.1 0 29 24 8.5 13 <.10 6.3 76 10... -- -- -- -- 0 29 24 -- -- -- -- -- MAR 13... 7.7 1.2 6.5 .91 0 18 15 6.6 11 <.10 5.5 57 APR 08... -- -- -- -- 0 16 13 -- -- -- -- -- 08... 6.3 .98 4.3 .73 0 16 13 5.2 6.7 <.10 4.6 48 MAY 07... 8.1 1.4 6.2 .95 0 22 18 6.1 9.2 <.10 4.9 60 JUN 08... -- -- -- -- -- -- -- -- -- -- -- -- 08... -- -- -- -- 0 31 26 -- -- -- -- -- JUL 08... 11 1.4 7.0 1.1 0 29 24 6.2 10 <.10 5.6 71 08... -- -- -- -- 0 29 24 -- -- -- -- -- AUG 12... 14 2.0 11 2.0 0 38 31 8.8 15 <.10 4.2 93 SEP 03... 15 1.8 9.9 1.9 0 46 38 9.0 14 <.10 4.6 103 NITRO- NITRO- NITRO- NITRO- NITRO- PHOS- SOLIDS, GEN, GEN, GEN, NITRO- GEN,AM- GEN,AM- PHOS- PHORUS ALUM- RESIDUE NITRITE NO2+NO3 AMMONIA GEN, MONIA + MONIA + NITRO- PHOS- PHORUS ORTHO, INUM, AT 105 DIS- DIS- DIS- ORGANIC ORGANIC ORGANIC GEN, PHORUS DIS- DIS- DIS- DEG. C, SOLVED SOLVED SOLVED TOTAL TOTAL DIS. TOTAL TOTAL SOLVED SOLVED SOLVED DATE TOTAL (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (UG/L (MG/L) AS N) AS N) AS N) AS N) AS N) AS N) AS N) AS P) AS P) AS P) AS AL) (00500) (00613) (00631) (00608) (00605) (00625) (00623) (00600) (00665) (00666) (00671) (01106) OCT 09... -- -- -- -- -- -- -- -- -- -- -- 4.4 09... 94 .016 .388 .017 .24 .25 <.20 .64 .069 .061 .055 -- NOV 17... 182 <.010 .289 .048 .15 .20 .19 .49 .050 .012 .037 26 DEC 12... -- -- -- -- -- -- -- -- -- -- -- 21 12... 83 <.010 .241 .041 .16 .20 .16 .44 .044 .022 .021 -- JAN 13... 65 <.010 .267 <.020 -- .19 .13 .45 .018 <.010 .012 -- FEB 10... 80 <.010 .399 .076 .19 .26 .20 .66 .060 .029 .043 -- 10... -- -- -- -- -- -- -- -- -- -- -- 30 MAR 13... 64 .012 .225 .021 .21 .23 <.10 .45 .015 <.010 .011 -- APR 08... -- -- -- -- -- -- -- -- -- -- -- 46 08... 71 <.010 .176 .026 .31 .33 .17 .51 .068 .011 .011 -- MAY 07... 79 <.010 .262 .061 .18 .24 .22 .50 <.010 <.010 .016 -- JUN 08... -- -- -- -- -- -- -- -- -- -- -- 22 08... 84 .022 .365 .088 .20 .29 .26 .66 .040 .022 .039 19 JUL 08... 76 <.010 .261 .068 .22 .29 .24 .55 .036 <.010 .020 25 08... -- -- -- -- -- -- -- -- -- -- -- 23 AUG 12... 84 .010 .389 .070 .25 .31 .34 .70 .098 .089 .081 17 SEP 03... -- .012 .454 .058 .27 .33 .35 .78 .145 .081 .085 -- CONNECTICUT RIVER BASIN 01184000 CONNECTICUT RIVER AT THOMPSONVILLE, CT--Continued WATER-QUALITY DATA, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 ANTI- BERYL- CHRO- MANGA- MOLYB- MONY, BARIUM, LIUM, CADMIUM MIUM, COBALT, COPPER, IRON, LEAD, NESE, DENUM, DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED DATE (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L AS SB) AS BA) AS BE) AS CD) AS CR) AS CO) AS CU) AS FE) AS PB) AS MN) AS MO) (01095) (01005) (01010) (01025) (01030) (01035) (01040) (01046) (01049) (01056) (01060) OCT 09... 1.4 40 <1.0 <1.0 <1.0 <1.0 1.6 -- <1.0 33 1.4 09... -- -- -- -- -- -- -- 50 -- 18 -- NOV 17... <1.0 13 <1.0 <1.0 <1.0 <1.0 1.4 75 <1.0 24 <1.0 DEC 12... <1.0 14 <1.0 <1.0 <1.0 <1.0 <1.0 -- <1.0 23 <1.0 12... -- -- -- -- -- -- -- 88 -- 24 -- JAN 13... -- -- -- -- -- -- -- 59 -- 12 -- FEB 10... -- -- -- -- -- -- -- 90 -- 22 -- 10... <1.0 12 <1.0 <1.0 <1.0 <1.0 1.0 -- <1.0 22 <1.0 MAR 13... -- -- -- -- -- -- -- 70 -- 15 -- APR 08... <1.0 8.7 <1.0 <1.0 <1.0 <1.0 1.0 -- <1.0 15 <1.0 08... -- -- -- -- -- -- -- 60 -- 14 -- MAY 07... -- -- -- -- -- -- -- 81 -- 13 -- JUN 08... <1.0 15 <1.0 <1.0 <1.0 <1.0 1.4 -- <1.0 20 <1.0 08... <1.0 15 <1.0 <1.0 <1.0 <1.0 2.1 -- <1.0 21 <1.0 JUL 08... <1.0 12 <1.0 <1.0 <1.0 <1.0 1.5 110 <1.0 20 <1.0 08... <1.0 12 <1.0 <1.0 <1.0 <1.0 1.4 -- <1.0 19 <1.0 AUG 12... <1.0 14 <1.0 <1.0 <1.0 <1.0 2.4 56 <1.0 13 <1.0 SEP 03... -- -- -- -- -- -- -- 52 -- -- -- SEDI- SED. URANIUM MENT, SUSP. PROP- BUTYL- SI- NICKEL, SILVER, ZINC, NATURAL CARBON, SEDI- DIS- SIEVE CHLOR, ATE, MAZINE, DIS- DIS- DIS- DIS- ORGANIC MENT, CHARGE, DIAM. WATER, WATER, WATER, SOLVED SOLVED SOLVED SOLVED TOTAL SUS- SUS- % FINER DISS, DISS, DISS, DATE (UG/L (UG/L (UG/L (UG/L (MG/L PENDED PENDED THAN REC REC REC AS NI) AS AG) AS ZN) AS U) AS C) (MG/L) (T/DAY) .062 MM (UG/L) (UG/L) (UG/L) (01065) (01075) (01090) (22703) (00680) (80154) (80155) (70331) (04024) (04028) (04035) OCT 09... 1.0 <1.0 6.1 <1.0 3.5 -- -- -- -- -- -- 09... -- -- -- -- -- -- -- -- -- -- -- NOV 17... <1.0 <1.0 4.3 <1.0 -- 4 153 50 <.0070 <.0020 <.0050 DEC 12... 1.1 <1.0 1.6 <1.0 2.8 -- -- -- -- -- -- 12... -- -- -- -- -- -- -- -- <.0070 <.0020 <.0050 JAN 13... -- -- -- -- -- -- -- -- <.0070 <.0020 E.0037 FEB 10... -- -- -- -- -- -- -- -- <.0070 <.0020 <.0050 10... <1.0 <1.0 2.2 <1.0 3.3 -- -- -- -- -- -- MAR 13... -- -- -- -- -- -- -- -- <.0070 <.0020 <.0050 APR 08... <1.0 <1.0 1.6 <1.0 5.0 -- -- -- -- -- -- 08... -- -- -- -- -- 43 6850 69 <.0070 <.0020 <.0050 MAY 07... -- -- -- -- -- 22 1890 83 <.0070 <.0020 E.0046 JUN 08... <1.0 <1.0 1.9 <1.0 3.6 -- -- -- -- -- -- 08... <1.0 <1.0 3.7 <1.0 -- 4 67 71 <.0070 <.0020 .0076 JUL 08... <1.0 <1.0 2.2 <1.0 -- 8 413 86 <.0070 <.0020 <.0050 08... <1.0 <1.0 <1.0 <1.0 5.3 -- -- -- -- -- -- AUG 12... 1.0 <1.0 2.3 <1.0 4.3 3 58 67 <.0070 <.0020 <.0050 SEP 03... -- -- -- -- 4.7 -- -- -- <.0070 <.0020 <.0050 CONNECTICUT RIVER BASIN 01184000 CONNECTICUT RIVER AT THOMPSONVILLE, CT--Continued WATER-QUALITY DATA, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DEETHYL PRO- ATRA- CYANA- METON, ZINE, ZINE, FONOFOS ALPHA CHLOR- DI- METO- MALA- WATER, WATER, WATER, WATER BHC P,P' PYRIFOS LINDANE ELDRIN LACHLOR THION, DISS, DISS, DISS, DISS DIS- DDE DIS- DIS- DIS- WATER DIS- DATE REC REC REC REC SOLVED DISSOLV SOLVED SOLVED SOLVED DISSOLV SOLVED (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (04037) (04040) (04041) (04095) (34253) (34653) (38933) (39341) (39381) (39415) (39532) OCT 09... -- -- -- -- -- -- -- -- -- -- -- 09... -- -- -- -- -- -- -- -- -- -- -- NOV 17... <.0180 <.0020 <.0040 <.0030 <.0020 <.0060 <.0040 <.004 <.001 E.004 <.005 DEC 12... -- -- -- -- -- -- -- -- -- -- -- 12... <.0180 E.0035 <.0040 <.0030 <.0020 <.0060 <.0040 <.004 <.001 .005 <.005 JAN 13... <.0180 E.0026 <.0040 <.0030 <.0020 <.0060 <.0040 <.004 <.001 E.004 <.005 FEB 10... <.0180 E.0036 <.0040 <.0030 <.0020 <.0060 <.0040 <.004 <.001 E.004 <.005 10... -- -- -- -- -- -- -- -- -- -- -- MAR 13... <.0180 <.0020 <.0040 <.0030 <.0020 <.0060 <.0040 <.004 <.001 E.004 <.005 APR 08... -- -- -- -- -- -- -- -- -- -- -- 08... <.0180 <.0020 <.0040 <.0030 <.0020 <.0060 <.0040 <.004 <.001 E.003 <.005 MAY 07... <.0180 <.0020 <.0040 <.0030 <.0020 <.0060 <.0040 <.004 <.001 .009 <.005 JUN 08... -- -- -- -- -- -- -- -- -- -- -- 08... <.0180 E.0082 .0120 <.0030 <.0020 <.0060 <.0040 <.004 <.001 .071 <.005 JUL 08... <.0180 E.0037 <.0040 <.0030 <.0020 <.0060 <.0040 <.004 <.001 .009 <.005 08... -- -- -- -- -- -- -- -- -- -- -- AUG 12... E.0038 E.0056 <.0040 <.0030 <.0020 <.0060 <.0040 <.004 <.001 .007 <.005 SEP 03... <.0180 <.0020 <.0040 <.0030 <.0020 <.0060 <.0040 <.004 <.001 E.004 <.005 2,6-DI- TRI- ETHAL- TER- ATRA- ALA- ACETO- METRI- ETHYL FLUR- FLUR- PHORATE BACIL PARA- DI- ZINE, CHLOR, CHLOR, BUZIN ANILINE ALIN ALIN WATER WATER THION, AZINON, WATER, WATER, WATER SENCOR WAT FLT WAT FLT WAT FLT FLTRD FLTRD DIS- DIS- DISS, DISS, FLTRD WATER 0.7 U 0.7 U 0.7 U 0.7 U 0.7 U DATE SOLVED SOLVED REC REC, REC DISSOLV GF, REC GF, REC GF, REC GF, REC GF, REC (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (39542) (39572) (39632) (46342) (49260) (82630) (82660) (82661) (82663) (82664) (82665) OCT 09... -- -- -- -- -- -- -- -- -- -- -- 09... -- -- -- -- -- -- -- -- -- -- -- NOV 17... <.004 <.002 E.003 <.002 <.0020 <.004 <.0030 <.0020 <.0040 <.0020 <.0070 DEC 12... -- -- -- -- -- -- -- -- -- -- -- 12... <.004 <.002 .005 <.002 <.0020 <.004 <.0030 <.0020 <.0040 <.0020 <.0070 JAN 13... <.004 <.002 E.003 <.002 <.0020 <.004 <.0030 <.0020 <.0040 <.0020 <.0070 FEB 10... <.004 <.002 E.003 <.002 <.0020 <.004 <.0030 <.0020 <.0040 <.0020 <.0070 10... -- -- -- -- -- -- -- -- -- -- -- MAR 13... <.004 <.002 E.003 <.002 <.0020 <.004 <.0030 <.0020 <.0040 <.0020 <.0070 APR 08... -- -- -- -- -- -- -- -- -- -- -- 08... <.004 <.002 <.001 <.002 <.0020 <.004 <.0030 <.0020 <.0040 <.0020 <.0070 MAY 07... <.004 .014 .009 .005 <.0020 <.004 <.0030 <.0020 <.0040 <.0020 <.0070 JUN 08... -- -- -- -- -- -- -- -- -- -- -- 08... <.004 .004 .070 .008 <.0020 <.004 <.0030 <.0020 <.0040 <.0020 <.0070 JUL 08... <.004 <.002 .013 <.002 <.0020 <.004 <.0030 <.0020 <.0040 <.0020 <.0070 08... -- -- -- -- -- -- -- -- -- -- -- AUG 12... <.004 .004 .008 <.002 <.0020 <.004 <.0030 <.0020 <.0040 <.0020 <.0070 SEP 03... <.004 <.002 <.001 <.002 <.0020 <.004 <.0030 <.0020 <.0040 <.0020 <.0070 CONNECTICUT RIVER BASIN 01184000 CONNECTICUT RIVER AT THOMPSONVILLE, CT--Continued WATER-QUALITY DATA, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 LIN- METHYL PEB- TEBU- MOL- ETHO- BEN- CARBO- TER- PRON- URON PARA- EPTC ULATE THIURON INATE PROP FLUR- FURAN BUFOS AMIDE WATER THION WATER WATER WATER WATER WATER ALIN WATER WATER WATER FLTRD WAT FLT FLTRD FILTRD FLTRD FLTRD FLTRD WAT FLD FLTRD FLTRD FLTRD 0.7 U 0.7 U 0.7 U 0.7 U 0.7 U 0.7 U 0.7 U 0.7 U 0.7 U 0.7 U 0.7 U DATE GF, REC GF, REC GF, REC GF, REC GF, REC GF, REC GF, REC GF, REC GF, REC GF, REC GF, REC (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (82666) (82667) (82668) (82669) (82670) (82671) (82672) (82673) (82674) (82675) (82676) OCT 09... -- -- -- -- -- -- -- -- -- -- -- 09... -- -- -- -- -- -- -- -- -- -- -- NOV 17... <.0020 <.0060 <.0020 <.0040 <.0100 <.0040 <.0030 <.0020 <.0030 <.0130 <.0030 DEC 12... -- -- -- -- -- -- -- -- -- -- -- 12... <.0020 <.0060 <.0020 <.0040 <.0100 <.0040 <.0030 <.0020 <.0030 <.0130 <.0030 JAN 13... <.0020 <.0060 <.0020 <.0040 <.0100 <.0040 <.0030 <.0020 <.0030 <.0130 <.0030 FEB 10... <.0020 <.0060 <.0020 <.0040 <.0100 <.0040 <.0030 <.0020 <.0030 <.0130 <.0030 10... -- -- -- -- -- -- -- -- -- -- -- MAR 13... <.0020 <.0060 <.0020 <.0040 <.0100 <.0040 <.0030 <.0020 <.0030 <.0130 <.0030 APR 08... -- -- -- -- -- -- -- -- -- -- -- 08... <.0020 <.0060 <.0020 <.0040 <.0100 <.0040 <.0030 <.0020 <.0030 <.0130 <.0030 MAY 07... <.0020 <.0060 <.0020 <.0040 <.0100 <.0040 <.0030 <.0020 <.0030 <.0130 <.0030 JUN 08... -- -- -- -- -- -- -- -- -- -- -- 08... <.0020 <.0060 <.0020 <.0040 <.0100 <.0040 <.0030 <.0020 <.0030 <.0130 <.0030 JUL 08... <.0020 <.0060 <.0020 <.0040 <.0100 <.0040 <.0030 <.0020 <.0030 <.0130 <.0030 08... -- -- -- -- -- -- -- -- -- -- -- AUG 12... <.0020 <.0060 <.0020 <.0040 <.0100 <.0040 <.0030 <.0020 <.0030 <.0130 <.0030 SEP 03... <.0020 <.0060 <.0020 <.0040 <.0100 <.0040 <.0030 <.0020 <.0030 <.0130 <.0030 DISUL- TRIAL- PRO- CAR- THIO- PENDI- NAPROP- PRO- METHYL PER- FOTON LATE PANIL BARYL BENCARB DCPA METH- AMIDE PARGITE AZIN- METHRIN WATER WATER WATER WATER WATER WATER ALIN WATER WATER PHOS CIS FLTRD FLTRD FLTRD FLTRD FLTRD FLTRD WAT FLT FLTRD FLTRD WAT FLT WAT FLT 0.7 U 0.7 U 0.7 U 0.7 U 0.7 U 0.7 U 0.7 U 0.7 U 0.7 U 0.7 U 0.7 U DATE GF, REC GF, REC GF, REC GF, REC GF, REC GF, REC GF, REC GF, REC GF, REC GF, REC GF, REC (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (UG/L) (82677) (82678) (82679) (82680) (82681) (82682) (82683) (82684) (82685) (82686) (82687) OCT 09... -- -- -- -- -- -- -- -- -- -- -- 09... -- -- -- -- -- -- -- -- -- -- -- NOV 17... <.0170 <.0010 <.0040 <.0030 <.0020 <.0020 <.0040 <.0030 <.0130 <.0010 <.0050 DEC 12... -- -- -- -- -- -- -- -- -- -- -- 12... <.0170 <.0010 <.0040 <.0030 <.0020 <.0020 <.0040 <.0030 <.0130 <.0010 <.0050 JAN 13... <.0170 <.0010 <.0040 <.0030 <.0020 <.0020 <.0040 <.0030 <.0130 <.0010 <.0050 FEB 10... <.0170 <.0010 <.0040 <.0030 <.0020 <.0020 <.0040 <.0030 <.0130 <.0010 <.0050 10... -- -- -- -- -- -- -- -- -- -- -- MAR 13... <.0170 <.0010 <.0040 <.0030 <.0020 <.0020 <.0040 <.0030 <.0130 <.0010 <.0050 APR 08... -- -- -- -- -- -- -- -- -- -- -- 08... <.0170 <.0010 <.0040 <.0030 <.0020 <.0020 <.0040 <.0030 <.0130 <.0010 <.0050 MAY 07... <.0170 <.0010 <.0040 E.0276 <.0020 <.0020 <.0040 <.0030 <.0130 <.0010 <.0050 JUN 08... -- -- -- -- -- -- -- -- -- -- -- 08... <.0170 <.0010 <.0040 E.0187 <.0020 <.0020 <.0040 <.0030 <.0130 <.0010 <.0050 JUL 08... <.0170 <.0010 <.0040 E.0119 <.0020 <.0020 <.0040 <.0030 <.0130 <.0010 <.0050 08... -- -- -- -- -- -- -- -- -- -- -- AUG 12... <.0170 <.0010 <.0040 E.0056 <.0020 <.0020 <.0040 <.0030 <.0130 <.0010 <.0050 SEP 03... <.0170 <.0010 <.0040 <.0030 <.0020 <.0020 <.0040 <.0030 <.0130 <.0010 <.0050 SUSPENDED SEDIMENT DISHARGE, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DIS- SEDI- SED. CHARGE, MENT, SUSP. INST. SEDI- DIS- SIEVE CUBIC MENT, CHARGE, DIAM. FEET SUS- SUS- % FINER DATE TIME PER PENDED PENDED THAN SECOND (MG/L) (T/DAY) .062 MM (00061) (80154) (80155) (70331) NOV 17... 0840 14200 4 153 50 APR 08... 1000 59000 43 6850 69 MAY 07... 0915 31900 22 1890 83 JUN 08... 1300 6240 4 67 71 JUL 08... 1110 19100 8 413 86 AUG 12... 1020 7160 3 58 67 CONNECTICUT RIVER BASIN 01184000 CONNECTICUT RIVER AT THOMPSONVILLE, CT--Continued TEMPERATURE, WATER (DEG. C), WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DAY MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN OCTOBER NOVEMBER DECEMBER JANUARY 1 17.5 16.5 17.0 11.5 10.5 11.0 2.5 2.5 2.5 --- --- --- 2 16.5 16.0 16.0 12.0 11.5 11.5 2.5 2.0 2.0 --- --- --- 3 16.0 15.0 15.5 11.5 11.0 11.0 2.0 1.5 2.0 --- --- --- 4 16.0 15.0 15.5 11.0 10.5 11.0 3.0 2.0 2.5 --- --- --- 5 17.0 16.0 16.5 11.0 10.0 10.5 3.5 3.0 3.0 --- --- --- 6 17.5 16.0 17.0 10.0 9.5 10.0 3.5 3.0 3.0 --- --- --- 7 18.0 17.0 17.5 9.5 9.0 9.5 3.0 2.5 3.0 --- --- --- 8 17.5 17.0 17.5 9.5 9.0 9.0 3.0 2.5 3.0 --- --- --- 9 18.0 17.0 17.5 9.0 8.5 8.5 3.0 2.5 3.0 --- --- --- 10 18.5 17.5 18.0 8.5 8.0 8.0 3.0 2.5 3.0 --- --- --- 11 18.0 16.5 17.5 8.0 7.5 8.0 2.5 2.0 2.5 --- --- --- 12 17.0 16.0 16.5 7.5 7.0 7.5 2.5 2.0 2.5 --- --- --- 13 17.0 16.0 16.5 7.0 6.5 6.5 3.0 2.5 2.5 --- --- --- 14 17.0 16.0 16.5 6.5 4.0 5.0 2.5 1.5 2.0 --- --- --- 15 17.0 16.0 16.5 4.0 3.5 4.0 2.0 1.5 1.5 --- --- --- 16 16.0 14.5 15.0 4.5 4.0 4.0 2.0 1.5 2.0 --- --- --- 17 15.0 14.0 14.5 4.5 3.5 4.0 --- --- --- --- --- --- 18 14.5 14.0 14.0 4.5 3.5 4.0 --- --- --- --- --- --- 19 14.0 13.0 13.5 4.5 3.5 4.0 --- --- --- --- --- --- 20 14.0 12.5 13.5 4.0 4.0 4.0 --- --- --- --- --- --- 21 14.0 13.0 13.5 4.0 4.0 4.0 --- --- --- --- --- --- 22 13.5 12.0 13.0 4.5 4.0 4.0 --- --- --- --- --- --- 23 12.5 11.0 12.0 4.0 3.5 3.5 --- --- --- --- --- --- 24 11.5 11.0 11.0 3.5 3.5 3.5 --- --- --- --- --- --- 25 11.0 10.5 11.0 3.5 3.5 3.5 --- --- --- --- --- --- 26 11.0 10.0 10.5 4.0 3.5 3.5 --- --- --- --- --- --- 27 10.5 10.0 10.5 4.0 3.5 4.0 --- --- --- --- --- --- 28 10.5 10.0 10.5 3.5 3.0 3.0 --- --- --- --- --- --- 29 10.0 9.5 9.5 3.0 3.0 3.0 --- --- --- --- --- --- 30 10.0 9.0 10.0 3.0 2.5 2.5 --- --- --- --- --- --- 31 10.5 9.5 10.0 --- --- --- --- --- --- --- --- --- MONTH 18.5 9.0 14.5 12.0 2.5 6.0 3.5 1.5 2.5 --- --- --- DAY MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN FEBRUARY MARCH APRIL MAY 1 --- --- --- 4.5 4.0 4.0 7.0 6.0 6.5 14.0 13.0 13.5 2 --- --- --- 4.5 3.5 4.0 6.0 6.0 6.0 14.0 13.5 14.0 3 --- --- --- 4.5 3.5 4.0 6.0 5.5 6.0 14.0 13.5 14.0 4 2.5 2.0 2.0 4.0 3.5 3.5 5.5 5.0 5.0 14.5 13.5 14.0 5 2.0 1.5 2.0 3.5 3.0 3.5 5.0 5.0 5.0 15.0 14.5 14.5 6 2.5 1.5 2.0 3.5 3.0 3.5 5.5 4.5 5.0 15.0 14.5 15.0 7 2.0 1.5 2.0 4.0 3.5 3.5 6.0 5.0 5.5 15.5 14.5 15.0 8 2.0 1.5 2.0 4.0 3.5 4.0 6.0 5.5 6.0 15.5 14.5 15.0 9 2.0 1.0 1.5 5.0 3.5 4.0 6.5 6.0 6.0 15.0 14.5 14.5 10 2.5 1.5 2.0 4.5 4.0 4.0 7.5 6.5 7.0 14.5 13.0 14.0 11 3.5 2.0 2.5 4.0 2.5 3.0 8.0 7.0 7.5 13.0 12.0 12.5 12 3.5 3.0 3.5 2.5 1.5 2.0 8.5 7.5 8.0 13.0 12.0 12.5 13 3.5 2.5 3.0 1.5 .0 1.5 9.0 8.0 8.5 14.0 12.5 13.0 14 2.5 1.5 2.0 1.5 1.0 1.5 9.5 9.0 9.0 15.0 13.0 14.0 15 1.5 .5 .5 1.5 1.0 1.5 10.0 9.0 9.5 16.0 14.0 15.0 16 .5 .0 .5 2.5 1.5 2.0 10.5 9.5 9.5 17.0 15.5 16.5 17 1.0 .5 .5 3.0 2.0 2.5 10.5 10.0 10.5 17.0 16.5 17.0 18 1.5 1.0 1.5 3.0 2.5 3.0 11.0 10.0 10.5 18.0 16.0 17.0 19 2.0 1.5 1.5 3.0 2.5 2.5 11.0 10.5 10.5 19.0 17.5 18.5 20 2.5 2.0 2.5 3.0 2.5 3.0 10.5 10.0 10.5 19.5 18.0 18.5 21 2.5 2.5 2.5 3.0 2.0 2.5 11.0 10.0 10.5 19.5 18.5 19.0 22 3.0 2.5 3.0 2.0 1.5 1.5 11.5 10.5 11.0 19.5 18.5 19.0 23 3.0 2.5 3.0 2.5 1.5 2.0 11.0 10.0 11.0 19.5 18.0 19.0 24 3.0 2.5 2.5 4.0 2.0 3.0 11.0 10.0 10.5 20.0 18.5 19.0 25 3.0 2.5 2.5 4.0 3.0 3.5 11.5 10.5 11.0 19.5 19.0 19.5 26 3.5 2.5 3.0 5.0 3.5 4.0 11.0 10.5 10.5 20.5 18.5 19.5 27 4.0 3.0 3.5 6.5 5.0 5.5 11.0 10.0 10.5 21.0 19.0 20.0 28 4.5 3.5 4.0 7.0 6.0 6.5 11.5 10.0 11.0 22.0 19.5 21.0 29 --- --- --- 7.0 6.5 6.5 12.5 10.5 11.5 22.5 21.0 22.0 30 --- --- --- 6.5 5.5 6.0 13.5 12.0 12.5 23.5 21.5 22.5 31 --- --- --- 7.0 6.0 6.0 --- --- --- 23.0 21.5 22.5 MONTH 4.5 .0 2.0 7.0 .0 3.5 13.5 4.5 8.5 23.5 12.0 17.0 CONNECTICUT RIVER BASIN 01184000 CONNECTICUT RIVER AT THOMPSONVILLE, CT--Continued TEMPERATURE, WATER (DEG. C), WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DAY MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN JUNE JULY AUGUST SEPTEMBER 1 23.0 21.5 22.0 20.5 20.0 20.5 --- --- --- --- --- --- 2 21.5 20.0 21.0 21.5 20.0 21.0 --- --- --- --- --- --- 3 20.0 19.0 19.5 22.0 20.5 21.5 --- --- --- --- --- --- 4 19.5 18.5 19.0 22.5 21.5 22.0 --- --- --- --- --- --- 5 19.0 18.0 18.5 22.5 21.5 22.0 --- --- --- --- --- --- 6 19.0 18.0 18.5 23.0 21.0 22.0 --- --- --- --- --- --- 7 19.0 18.0 18.5 22.5 21.5 22.0 --- --- --- --- --- --- 8 18.5 17.5 18.0 22.0 21.0 21.5 --- --- --- --- --- --- 9 20.0 17.5 19.0 22.0 20.5 21.0 --- --- --- --- --- --- 10 20.0 19.0 19.5 22.5 21.0 22.0 --- --- --- --- --- --- 11 20.5 20.0 20.0 23.0 22.0 22.5 --- --- --- --- --- --- 12 20.0 19.5 20.0 22.5 21.5 22.0 --- --- --- --- --- --- 13 19.5 19.0 19.5 23.5 22.0 22.5 --- --- --- --- --- --- 14 19.0 17.5 18.5 24.0 22.5 23.5 --- --- --- --- --- --- 15 17.5 17.0 17.0 24.5 23.0 24.0 --- --- --- --- --- --- 16 17.0 16.5 16.5 25.0 23.5 24.0 --- --- --- --- --- --- 17 17.5 16.5 17.0 --- --- --- --- --- --- --- --- --- 18 18.0 16.5 17.5 --- --- --- --- --- --- --- --- --- 19 19.0 17.5 18.0 --- --- --- --- --- --- --- --- --- 20 19.0 18.0 18.5 --- --- --- --- --- --- --- --- --- 21 19.5 18.5 19.0 --- --- --- --- --- --- --- --- --- 22 20.5 19.0 20.0 --- --- --- --- --- --- --- --- --- 23 20.5 20.0 20.5 --- --- --- --- --- --- --- --- --- 24 22.0 20.5 21.0 --- --- --- --- --- --- --- --- --- 25 23.0 21.5 22.5 --- --- --- --- --- --- --- --- --- 26 23.0 22.5 23.0 --- --- --- --- --- --- --- --- --- 27 23.0 22.5 23.0 --- --- --- --- --- --- --- --- --- 28 23.0 22.5 22.5 --- --- --- --- --- --- --- --- --- 29 22.5 20.5 21.5 --- --- --- --- --- --- --- --- --- 30 20.5 20.0 20.5 --- --- --- --- --- --- --- --- --- 31 --- --- --- --- --- --- --- --- --- --- --- --- MONTH 23.0 16.5 19.5 25.0 20.0 22.0 --- --- --- --- --- --- YEAR 25.0 .0 10.5 SPECIFIC CONDUCTANCE (MICROSIEMENS/CM AT 25 DEG.C), WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DAY MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN OCTOBER NOVEMBER DECEMBER JANUARY 1 159 147 155 151 110 134 124 108 118 --- --- --- 2 159 150 154 156 106 136 108 93 98 --- --- --- 3 159 148 153 110 84 100 103 95 100 --- --- --- 4 165 148 156 103 81 92 147 103 119 --- --- --- 5 159 150 154 107 101 104 165 114 138 --- --- --- 6 164 153 159 116 106 110 151 118 131 --- --- --- 7 159 148 155 119 113 115 159 112 129 --- --- --- 8 157 150 154 118 109 114 161 115 139 --- --- --- 9 166 149 156 118 99 110 155 116 131 --- --- --- 10 165 151 159 99 76 84 148 123 133 --- --- --- 11 163 152 159 87 73 79 172 133 150 --- --- --- 12 166 154 160 93 84 90 156 133 143 --- --- --- 13 165 153 159 97 87 91 147 129 139 --- --- --- 14 165 155 161 104 92 100 142 127 132 --- --- --- 15 161 146 155 117 101 109 140 129 135 --- --- --- 16 153 145 150 134 117 126 143 135 139 --- --- --- 17 160 148 154 134 114 123 140 132 135 --- --- --- 18 171 155 163 120 108 114 151 135 142 --- --- --- 19 176 162 168 129 112 117 --- --- --- --- --- --- 20 171 157 164 118 108 113 --- --- --- --- --- --- 21 167 158 163 122 114 118 --- --- --- --- --- --- 22 163 155 160 160 117 133 --- --- --- --- --- --- 23 169 156 163 160 112 132 --- --- --- --- --- --- 24 168 157 163 124 108 118 --- --- --- --- --- --- 25 161 154 157 127 117 122 --- --- --- --- --- --- 26 175 156 164 126 113 120 --- --- --- --- --- --- 27 172 155 162 145 114 126 --- --- --- --- --- --- 28 172 155 163 121 107 113 --- --- --- --- --- --- 29 158 122 148 117 103 111 --- --- --- --- --- --- 30 151 141 147 119 111 115 --- --- --- --- --- --- 31 149 123 142 --- --- --- --- --- --- --- --- --- MONTH 176 122 157 160 73 112 172 93 131 --- --- --- CONNECTICUT RIVER BASIN 01184000 CONNECTICUT RIVER AT THOMPSONVILLE, CT--Continued SPECIFIC CONDUCTANCE (MICROSIEMENS/CM AT 25 DEG.C), WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DAY MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN FEBRUARY MARCH APRIL MAY 1 --- --- --- 107 103 105 75 71 73 126 117 121 2 --- --- --- 104 99 101 75 70 73 126 114 118 3 --- --- --- 100 97 99 74 71 73 117 108 112 4 124 114 120 100 96 98 76 71 73 113 98 105 5 145 117 130 102 95 97 73 67 70 109 103 105 6 161 130 147 101 97 99 68 60 63 113 96 107 7 135 119 126 105 99 102 60 56 58 96 87 90 8 130 122 126 108 101 105 61 57 59 95 89 92 9 128 115 123 110 92 101 69 59 63 97 91 94 10 126 118 122 93 85 89 76 65 73 100 79 94 11 126 115 122 88 84 87 76 69 72 79 70 73 12 135 121 129 87 84 86 77 74 76 74 68 72 13 133 98 112 87 83 86 79 73 75 81 74 78 14 103 94 99 103 85 89 81 75 78 89 79 84 15 106 96 99 112 96 103 88 75 80 96 87 91 16 108 99 102 99 93 96 91 86 88 104 91 97 17 107 101 104 102 97 99 93 85 88 139 101 106 18 134 104 117 106 102 104 96 85 91 159 98 119 19 125 104 112 109 102 105 85 72 76 180 110 117 20 106 94 98 106 94 98 79 70 74 180 110 141 21 99 93 97 100 89 92 76 70 73 168 119 131 22 101 93 96 120 100 111 78 73 75 168 122 129 23 100 95 98 125 116 121 83 75 79 178 127 139 24 123 96 103 125 114 119 90 81 85 145 129 137 25 132 111 120 116 106 111 97 89 94 136 128 133 26 111 102 105 114 107 110 109 95 103 148 133 138 27 106 100 104 114 109 111 111 105 109 167 137 147 28 109 103 106 111 94 100 112 107 110 148 133 141 29 --- --- --- 97 91 94 115 110 113 150 112 135 30 --- --- --- 93 82 89 120 111 116 128 86 110 31 --- --- --- 83 74 78 --- --- --- 96 82 87 MONTH 161 93 113 125 74 100 120 56 81 180 68 111 DAY MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN MAX MIN MEAN JUNE JULY AUGUST SEPTEMBER 1 101 87 94 97 88 92 --- --- --- --- --- --- 2 96 82 92 98 89 93 --- --- --- --- --- --- 3 115 95 107 100 90 97 --- --- --- --- --- --- 4 129 113 122 104 94 101 --- --- --- --- --- --- 5 133 124 129 111 103 108 --- --- --- --- --- --- 6 145 122 129 111 105 108 --- --- --- --- --- --- 7 136 127 132 109 101 105 --- --- --- --- --- --- 8 141 129 135 112 98 107 --- --- --- --- --- --- 9 149 133 141 117 107 112 --- --- --- --- --- --- 10 149 139 145 117 100 111 --- --- --- --- --- --- 11 155 145 150 121 98 117 --- --- --- --- --- --- 12 158 150 154 117 106 112 --- --- --- --- --- --- 13 160 151 155 116 107 112 --- --- --- --- --- --- 14 159 100 131 123 111 117 --- --- --- --- --- --- 15 100 78 86 132 120 126 --- --- --- --- --- --- 16 78 63 71 133 124 128 --- --- --- --- --- --- 17 69 62 66 --- --- --- --- --- --- --- --- --- 18 69 61 65 --- --- --- --- --- --- --- --- --- 19 73 66 69 --- --- --- --- --- --- --- --- --- 20 78 70 73 --- --- --- --- --- --- --- --- --- 21 78 70 74 --- --- --- --- --- --- --- --- --- 22 82 70 75 --- --- --- --- --- --- --- --- --- 23 87 79 83 --- --- --- --- --- --- --- --- --- 24 92 76 85 --- --- --- --- --- --- --- --- --- 25 95 74 81 --- --- --- --- --- --- --- --- --- 26 --- --- --- --- --- --- --- --- --- --- --- --- 27 100 94 97 --- --- --- --- --- --- --- --- --- 28 104 95 98 --- --- --- --- --- --- --- --- --- 29 102 94 98 --- --- --- --- --- --- --- --- --- 30 100 90 96 --- --- --- --- --- --- --- --- --- 31 --- --- --- --- --- --- --- --- --- --- --- --- MONTH 160 61 105 133 88 109 --- --- --- --- --- --- YEAR 180 56 113