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 1995 TO SEPTEMBER 1996 PH OXYGEN, COLI- ENTERO- SPE- WATER DIS- FORM, COCCI HARD- CIFIC WHOLE SOLVED FECAL, ME,MF NESS CON- FIELD TEMPER- TEMPER- TUR- OXYGEN, (PER- 0.45 WATER TOTAL DUCT- (STAND- ATURE ATURE BID- DIS- CENT UM-MF TOTAL (MG/L DATE TIME ANCE ARD AIR WATER ITY SOLVED SATUR- (COLS./ (COL / AS (US/CM) UNITS) (DEG C) (DEG C) (NTU) (MG/L) ATION) 100 ML) 100 ML) CACO3) (00095) (00400) (00020) (00010) (00076) (00300) (00301) (31616) (31649) (00900) OCT 26... 0925 104 7.3 14.0 15.0 -- 9.4 93 230 70 32 DEC 12... 1025 132 7.5 -1.5 1.0 1.7 13.1 91 1300 292 38 FEB 23... 1000 165 7.3 15.0 2.0 6.0 15.0 109 2700 920 38 APR 19... 0940 81 7.3 22.0 6.5 13 12.5 102 440 184 23 JUN 25... 0830 129 7.6 28.0 24.0 2.2 7.1 85 K3 20 37 AUG 05... 0820 118 7.4 25.0 23.0 1.5 7.5 87 34 K6 39 BICAR- ALKA- MAGNE- POTAS- BONATE LINITY CHLO- FLUO- CALCIUM SIUM, SODIUM, SIUM, WATER WAT DIS SULFATE RIDE, RIDE, DIS- DIS- DIS- DIS- DIS IT TOT IT DIS- DIS- DIS- SOLVED SOLVED SOLVED SOLVED FIELD FIELD SOLVED SOLVED SOLVED DATE (MG/L (MG/L (MG/L (MG/L MG/L AS MG/L AS (MG/L (MG/L (MG/L AS CA) AS MG) AS NA) AS K) HCO3 CACO3 AS SO4) AS CL) AS F) (00915) (00925) (00930) (00935) (00453) (39086) (00945) (00940) (00950) OCT 26... 10 1.6 6.1 1.6 28 23 8.4 9.3 <0.10 DEC 12... 12 2.0 8.8 1.4 33 27 9.4 13 <0.10 FEB 23... 12 2.0 16 1.4 29 24 9.6 24 <0.10 APR 19... 7.3 1.1 5.9 0.80 22 19 6.8 9.1 <0.10 JUN 25... 12 1.8 8.1 1.2 35 29 8.1 12 <0.10 AUG 05... 13 1.7 6.7 1.2 35 29 7.4 9.9 <0.10 SOLIDS, NITRO- NITRO- NITRO- NITRO- NITRO- SILICA, RESIDUE SOLIDS, GEN, GEN, GEN, NITRO- GEN,AM- GEN,AM- DIS- AT 180 RESIDUE NITRITE NO2+NO3 AMMONIA GEN, MONIA + MONIA + NITRO- SOLVED DEG. C AT 105 DIS- DIS- DIS- ORGANIC ORGANIC ORGANIC GEN, (MG/L DIS- DEG. C, SOLVED SOLVED SOLVED TOTAL TOTAL DIS. TOTAL DATE AS SOLVED TOTAL (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L SIO2) (MG/L) (MG/L) AS N) AS N) AS N) AS N) AS N) AS N) AS N) (00955) (70300) (00500) (00613) (00631) (00608) (00605) (00625) (00623) (00600) OCT 26... 5.6 68 88 <0.010 0.200 0.050 0.35 0.40 0.30 0.60 DEC 12... 7.2 73 80 0.010 0.490 0.180 0.22 0.40 0.30 0.89 FEB 23... 7.1 91 122 0.020 0.590 0.210 0.29 0.50 0.40 1.1 APR 19... 4.9 51 -- <0.010 0.240 0.040 0.26 0.30 0.20 0.54 JUN 25... 5.7 81 70 0.030 0.480 0.140 0.16 0.30 0.30 0.78 AUG 05... 5.9 67 60 0.020 0.410 0.040 0.26 0.30 <0.20 0.71 CONNECTICUT RIVER BASIN 01193750 CONNECTICUT RIVER AT EAST HADDAM, CT--Continued WATER-QUALITY DATA, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996 PHOS- PHOS- PHORUS ALUM- ANTI- BERYL- CHRO- PHOS- PHORUS ORTHO, INUM, MONY, BARIUM, LIUM, CADMIUM MIUM, COBALT, PHORUS DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- TOTAL SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED DATE (MG/L (MG/L (MG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L AS P) AS P) AS P) AS AL) AS SB) AS BA) AS BE) AS CD) AS CR) AS CO) (00665) (00666) (00671) (01106) (01095) (01005) (01010) (01025) (01030) (01035) OCT 26... 0.040 0.020 0.020 41 <1.0 14 <1.0 <1.0 <1.0 <1.0 DEC 12... 0.070 0.050 0.050 26 <1.0 16 <1.0 <1.0 1.0 <1.0 FEB 23... 0.090 0.040 0.030 38 <1.0 18 <1.0 <1.0 <1.0 <1.0 APR 19... 0.040 0.010 <0.010 37 <1.0 11 <1.0 <1.0 <1.0 <1.0 JUN 25... 0.060 0.040 0.040 18 <1.0 15 <1.0 <1.0 <1.0 <1.0 AUG 05... 0.030 0.050 0.040 21 <1.0 13 <1.0 <1.0 <1.0 <1.0 MANGA- MOLYB- URANIUM COPPER, IRON, LEAD, NESE, DENUM, NICKEL, SILVER, ZINC, NATURAL CARBON, DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- ORGANIC SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED TOTAL DATE (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (MG/L AS CU) AS FE) AS PB) AS MN) AS MO) AS NI) AS AG) AS ZN) AS U) AS C) (01040) (01046) (01049) (01056) (01060) (01065) (01075) (01090) (22703) (00680) OCT 26... 2.0 110 <1.0 11 <1.0 <1.0 <1.0 3.0 <1.0 8.0 DEC 12... 3.0 150 <1.0 31 <1.0 2.0 <1.0 4.0 <1.0 4.4 FEB 23... 2.0 110 <1.0 28 <1.0 <1.0 <1.0 5.0 <1.0 4.2 APR 19... 1.0 78 <1.0 25 <1.0 <1.0 <1.0 2.0 <1.0 4.7 JUN 25... 2.0 110 <1.0 8.0 <1.0 <1.0 <1.0 <1.0 <1.0 4.2 AUG 05... 2.0 130 <1.0 8.0 <1.0 <1.0 <1.0 <1.0 <1.0 3.9