CONNECTICUT RIVER BASIN 01193750 CONNECTICUT RIVER AT EAST HADDAM, CT LOCATION.--Lat 4127'05", long 7227'55", Middlesex County, Hydrologic Unit 01080205, at bridge on State Highway 82, at East Haddam, 1.1 mi downstream from Salmon River and 3.7 mi upstream from Chester Creek. DRAINAGE AREA.--11,092 mi2. PERIOD OF RECORD.--Water years 1968, 1974 to current year. REMARKS.--Stream tidal affected. WATER-QUALITY DATA, WATER YEAR OCTOBER 1994 TO SEPTEMBER 1995 PH OXYGEN, COLI- ENTERO- SPE- WATER DIS- FORM, COCCI HARD- CIFIC WHOLE SOLVED FECAL, ME,MF NESS CALCIUM CON- FIELD TEMPER- TEMPER- TUR- OXYGEN, (PER- 0.45 WATER TOTAL DIS- DUCT- (STAND- ATURE ATURE BID- DIS- CENT UM-MF TOTAL (MG/L SOLVED DATE TIME ANCE ARD AIR WATER ITY SOLVED SATUR- (COLS./ (COL / AS (MG/L (US/CM) UNITS) (DEG C) (DEG C) (NTU) (MG/L) ATION) 100 ML) 100 ML) CACO3) AS CA) (00095) (00400) (00020) (00010) (00076) (00300) (00301) (31616) (31649) (00900) (00915) OCT 13... 0845 133 7.0 17.0 15.5 1.5 10.2 101 110 K6 42 13 DEC 08... 1035 112 7.5 5.0 5.0 12 12.9 100 3300 700 29 9.1 FEB 06... 1115 149 7.5 -5.0 0.0 2.0 15.2 105 280 120 35 11 APR 10... 1200 128 7.4 22.0 6.5 1.5 11.6 93 200 64 32 10 JUN 08... 0915 119 7.4 28.5 22.5 1.2 7.9 93 50 K12 35 11 AUG 17... 0900 126 7.2 32.5 30.0 1.8 6.4 85 K19 K16 34 9.8 SEP 18... 0925 170 7.3 23.0 22.5 1.2 6.6 76 560 28 40 12 CAR- BICAR- ALKA- SOLIDS, MAGNE- POTAS- BONATE BONATE LINITY CHLO- FLUO- SILICA, RESIDUE SOLIDS, SIUM, SODIUM, SIUM, WATER WATER WAT DIS SULFATE RIDE, RIDE, DIS- AT 180 RESIDUE DIS- DIS- DIS- DIS IT DIS IT TOT IT DIS- DIS- DIS- SOLVED DEG. C AT 105 SOLVED SOLVED SOLVED FIELD FIELD FIELD SOLVED SOLVED SOLVED (MG/L DIS- DEG. C, DATE (MG/L (MG/L (MG/L MG/L AS MG/L AS MG/L AS (MG/L (MG/L (MG/L AS SOLVED TOTAL AS MG) AS NA) AS K) CO3 HCO3 CACO3 AS SO4) AS CL) AS F) SIO2) (MG/L) (MG/L) (00925) (00930) (00935) (00452) (00453) (39086) (00945) (00940) (00950) (00955) (70300) (00500) OCT 13... 2.3 10 1.8 0 40 33 9.9 14 <0.10 5.5 84 92 DEC 08... 1.6 6.7 1.2 0 26 21 8.1 11 <0.10 6.0 66 130 FEB 06... 1.8 8.0 1.1 0 28 23 8.3 13 <0.10 7.2 73 82 APR 10... 1.7 8.0 1.2 0 27 22 8.4 12 <0.10 6.2 70 74 JUN 08... 1.8 8.1 1.5 0 32 26 8.3 11 <0.10 5.3 68 72 AUG 17... 2.2 10 1.6 0 24 20 10 13 <0.10 4.3 71 72 SEP 18... 2.4 14 2.5 0 36 30 13 20 0.10 2.4 92 102 CONNECTICUT RIVER BASIN 01193750 CONNECTICUT RIVER AT EAST HADDAM, CT--Continued WATER-QUALITY DATA, WATER YEAR OCTOBER 1994 TO SEPTEMBER 1995 NITRO- NITRO- NITRO- NITRO- NITRO- PHOS- GEN, GEN, GEN, NITRO- GEN,AM- GEN,AM- PHOS- PHORUS ALUM- ANTI- NITRITE NO2+NO3 AMMONIA GEN, MONIA + MONIA + NITRO- PHOS- PHORUS ORTHO, INUM, MONY, DIS- DIS- DIS- ORGANIC ORGANIC ORGANIC GEN, PHORUS DIS- DIS- DIS- DIS- SOLVED SOLVED SOLVED TOTAL TOTAL DIS. TOTAL TOTAL SOLVED SOLVED SOLVED SOLVED DATE (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (UG/L (UG/L AS N) AS N) AS N) AS N) AS N) AS N) AS N) AS P) AS P) AS P) AS AL) AS SB) (00613) (00631) (00608) (00605) (00625) (00623) (00600) (00665) (00666) (00671) (01106) (01095) OCT 13... 0.040 0.610 0.120 0.38 0.50 0.40 1.1 0.070 0.070 0.070 10 <1 DEC 08... <0.010 0.270 0.080 0.52 0.60 0.20 0.87 0.160 0.030 0.010 30 <1 FEB 06... 0.010 0.450 0.210 0.19 0.40 0.30 0.85 0.030 0.030 0.030 30 <1 APR 10... 0.010 0.420 0.190 0.21 0.40 0.30 0.82 0.040 <0.010 0.020 30 <1 JUN 08... 0.020 0.410 0.120 0.18 0.30 <0.20 0.71 0.040 0.030 0.030 10 <1 AUG 17... 0.020 0.450 0.120 0.28 0.40 0.20 0.85 0.100 0.060 0.060 9 <1 SEP 18... 0.050 0.790 0.170 0.33 0.50 0.50 1.3 0.130 0.110 0.110 6 <1 CHRO- BERYL- CADMIUM MIUM, CHRO- COPPER, IRON, BARIUM, LIUM, TOTAL CADMIUM TOTAL MIUM, COBALT, TOTAL COPPER, TOTAL IRON, DIS- DIS- RECOV- DIS- RECOV- DIS- DIS- RECOV- DIS- RECOV- DIS- SOLVED SOLVED ERABLE SOLVED ERABLE SOLVED SOLVED ERABLE SOLVED ERABLE 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 BA) AS BE) AS CD) AS CD) AS CR) AS CR) AS CO) AS CU) AS CU) AS FE) AS FE) (01005) (01010) (01027) (01025) (01034) (01030) (01035) (01042) (01040) (01045) (01046) OCT 13... 19 <1 <1 <1.0 <1 <1 <1 2 2 270 110 DEC 08... 14 <1 <1 <1.0 3 <1 <1 6 1 2300 140 FEB 06... 14 <1 -- <1.0 -- <1 <1 -- 1 -- 96 APR 10... 13 <1 -- <1.0 -- <1 <1 -- 1 -- 110 JUN 08... 14 <1 -- <1.0 -- <1 <1 -- 2 -- 70 AUG 17... 16 <1 -- <1.0 -- <1 <1 -- 3 -- 39 SEP 18... 17 <1 -- <1.0 -- <1 <1 -- 3 -- 24 LEAD, MANGA- MOLYB- NICKEL, ZINC, URANIUM TOTAL LEAD, NESE, DENUM, TOTAL NICKEL, SILVER, TOTAL ZINC, NATURAL CARBON, RECOV- DIS- DIS- DIS- RECOV- DIS- DIS- RECOV- DIS- DIS- ORGANIC ERABLE SOLVED SOLVED SOLVED ERABLE SOLVED SOLVED ERABLE SOLVED SOLVED TOTAL DATE (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (MG/L AS PB) AS PB) AS MN) AS MO) AS NI) AS NI) AS AG) AS ZN) AS ZN) AS U) AS C) (01051) (01049) (01056) (01060) (01067) (01065) (01075) (01092) (01090) (22703) (00680) OCT 13... 1 <1 6 <1 2 1 <1.0 <10 2 <1.0 4.7 DEC 08... 6 <1 7 <1 3 1 <1.0 20 <1 <1.0 8.4 FEB 06... -- <1 41 <1 -- 1 <1.0 -- 3 <1.0 4.1 APR 10... -- <1 28 <1 -- 1 <1.0 -- 2 <1.0 3.7 JUN 08... -- <1 4 <1 -- 1 <1.0 -- 1 <1.0 5.0 AUG 17... -- <1 25 <1 -- <1 <1.0 -- 3 <1.0 4.9 SEP 18... -- <1 30 1 -- 2 <1.0 -- 4 <1.0 6.0