HOUSATONIC RIVER BASIN 01205500 HOUSATONIC RIVER AT STEVENSON, CT--Continued WATER-QUALITY RECORDS PERIOD OF RECORD.--Water years 1952-53, 1955-56, 1959, 1961, 1963, 1968 to current year. PERIOD OF DAILY RECORD.-- SPECIFIC CONDUCTANCE: November 1974 to September 1981. WATER TEMPERATURES: November 1974 to September 1981. EXTREMES FOR PERIOD OF DAILY RECORD.-- SPECIFIC CONDUCTANCE: Maximum recorded, 390 microsiemens Sept. 14, 1977; minimum recorded, 46 microsiemens Mar. 25, 1980. WATER TEMPERATURES: Maximum recorded, 30.5C Aug. 3, 6-9, 1976; minimum, 0.0C many days during the winter period. WATER-QUALITY DATA, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000 DIS- SPE- PH OXYGEN, COLI- CHARGE, SPE- CIFIC WATER DIS- FORM, INST. CIFIC CON- WHOLE SOLVED FECAL, CUBIC CON- DUCT- FIELD TEMPER- TEMPER- TUR- OXYGEN, (PER- 0.45 FEET DUCT- ANCE (STAND- ATURE ATURE BID- DIS- CENT UM-MF DATE TIME PER ANCE LAB ARD AIR WATER ITY SOLVED SATUR- (COLS./ SECOND (US/CM) (US/CM) UNITS) (DEG C) (DEG C) (NTU) (MG/L) ATION) 100 ML) (00061) (00095) (90095) (00400) (00020) (00010) (00076) (00300) (00301) (31616) NOV 16... 1100 4610 231 239 7.8 4.0 9.5 2.6 10.0 89 K4 JAN 24... 1045 542 251 249 8.2 -2.5 1.5 1.4 13.4 95 K2 MAY 08... 1220 5740 218 225 8.2 31.0 15.0 1.7 11.0 110 K8 JUL 31... 1540 6470 225 232 7.6 19.5 20.5 5.2 6.4 71 K30 ENTERO- ENTERO- CAR- BICAR- ALKA- COCCI COCCI HARD- MAGNE- POTAS- BONATE BONATE LINITY ME,MF (MEI) NESS CALCIUM SIUM, SODIUM, SIUM, WATER WATER WAT DIS SULFATE WATER MF 24 TOTAL DIS- DIS- DIS- DIS- DIS IT DIS IT TOT IT DIS- TOTAL HOUR (MG/L SOLVED SOLVED SOLVED SOLVED FIELD FIELD FIELD SOLVED DATE (COL / (COL / AS (MG/L (MG/L (MG/L (MG/L MG/L AS MG/L AS MG/L AS (MG/L 100 ML) 100 ML CACO3) AS CA) AS MG) AS NA) AS K) CO3 HCO3 CACO3 AS SO4) (31649) (90909) (00900) (00915) (00925) (00930) (00935) (00452) (00453) (39086) (00945) NOV 16... K1 -- 96 24.5 8.49 10.2 1.6 0 93 76 E.3 JAN 24... K4 -- 100 25.5 9.26 10.2 1.4 0 122 100 11.1 MAY 08... -- <1 86 21.6 7.79 9.5 1.1 0 88 72 8.8 JUL 31... -- K14 90 22.6 8.17 9.2 1.4 0 99 81 7.8 SOLIDS, NITRO- NITRO- NITRO- NITRO- NITRO- CHLO- FLUO- SILICA, RESIDUE SOLIDS, GEN, GEN, GEN, NITRO- GEN,AM- GEN,AM- RIDE, RIDE, DIS- AT 180 RESIDUE NITRITE NO2+NO3 AMMONIA GEN, MONIA + MONIA + DIS- DIS- SOLVED DEG. C AT 105 DIS- DIS- DIS- ORGANIC ORGANIC ORGANIC SOLVED SOLVED (MG/L DIS- DEG. C, SOLVED SOLVED SOLVED TOTAL TOTAL DIS. DATE (MG/L (MG/L AS SOLVED TOTAL (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L AS CL) AS F) SIO2) (MG/L) (MG/L) AS N) AS N) AS N) AS N) AS N) AS N) (00940) (00950) (00955) (70300) (00500) (00613) (00631) (00608) (00605) (00625) (00623) NOV 16... 42.9 <.1 5.0 131 133 <.010 .260 .048 .35 .40 .26 JAN 24... 16.7 <.1 5.6 139 137 <.010 .546 .041 .16 .20 .19 MAY 08... 15.7 <.1 3.7 124 127 <.010 .251 <.020 -- .28 .16 JUL 31... 13.2 <.1 4.9 129 134 .027 .364 .089 .36 .45 .32 PHOS- PHOS- PHORUS ALUM- ANTI- BERYL- CHRO- NITRO- PHOS- PHORUS ORTHO, INUM, MONY, BARIUM, LIUM, CADMIUM MIUM, COBALT, GEN, PHORUS DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- TOTAL TOTAL SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED DATE (MG/L (MG/L (MG/L (MG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L AS N) AS P) AS P) AS P) AS AL) AS SB) AS BA) AS BE) AS CD) AS CR) AS CO) (00600) (00665) (00666) (00671) (01106) (01095) (01005) (01010) (01025) (01030) (01035) NOV 16... .66 .029 .007 <.010 6 <1 13 <1 <1.0 <.8 <1 JAN 24... .75 .028 .016 <.010 7 <1 13 <1 <1.0 <.8 <1 MAY 08... .53 .019 E.005 <.010 13 <1 11 <1 <1.0 <.8 <1 JUL 31... .82 .044 .012 .021 10 <1 14 <1 <1.0 <.8 <1 HOUSATONIC RIVER BASIN 01205500 HOUSATONIC RIVER AT STEVENSON, CT--Continued WATER-QUALITY DATA, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000 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) NOV 16... <1 30 <1 12 <1 <1 <1 2 <1 4.8 JAN 24... <1 40 <1 16 <1 <1 <1 1 <1 2.5 MAY 08... 1 10 <1 <1 <1 <1 <1 <1 <1 2.9 JUL 31... <1 50 <1 25 <1 <1 <1 <1 <1 4.7