HOUSATONIC RIVER BASIN 01201487 STILL RIVER AT RT 7 AT BROOKFIELD CENTER, CT LOCATION.--Lat 4127'58", long 7324'13", Fairfield County, Hydrologic Unit 01100005, on the upstream side of Route 7 South Bridge, approximately 800 ft upstream of Silvermine Road. DRAINAGE AREA.--62.3 mi2. PERIOD OF RECORD.--October 1983 to present. REMARKS.--Water-quality records for this site published under station 01201485 from water year 1984 to water year 1992. WATER-QUALITY DATA, WATER YEAR OCTOBER 1994 TO SEPTEMBER 1995 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) NOV 1994 16... 1315 36 528 8.3 13.0 9.5 -- 10.5 92 3000 400 170 JAN 1995 30... 1325 104 470 7.7 5.0 1.0 3.4 13.7 98 330 200 140 MAR 27... 1130 80 462 7.9 17.0 8.0 2.6 13.1 111 6000 K15 150 MAY 15... 1325 64 455 7.6 19.0 13.5 -- 8.2 80 440 80 160 JUN 02... 1035 43 567 7.6 25.0 19.0 2.8 6.6 71 6400 1480 180 JUL 24... 1300 47 373 7.5 29.5 24.0 4.3 6.6 80 19000 15600 120 AUG 22... 1000 19 694 7.9 28.0 21.0 1.9 6.3 71 520 124 220 SEP 12... 1245 12 722 7.7 24.0 16.0 1.0 8.4 86 840 80 190 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) NOV 1994 16... 45 15 36 5.5 0 159 130 26 55 0.20 7.4 296 JAN 1995 30... 35 12 23 2.9 0 129 106 19 38 0.10 9.3 231 MAR 27... 39 13 25 3.1 0 135 111 19 42 0.10 6.1 241 MAY 15... 43 13 27 3.9 0 142 116 19 50 0.20 7.4 276 JUN 02... 47 14 42 5.1 0 140 115 31 70 0.30 8.8 335 JUL 24... 31 9.2 22 4.2 0 81 66 22 37 0.10 6.5 217 AUG 22... 61 16 51 8.3 0 128 105 35 91 0.40 6.6 420 SEP 12... 52 15 55 10 0 105 86 50 110 0.40 7.8 408 HOUSATONIC RIVER BASIN 01201487 STILL RIVER AT RT 7 AT BROOKFIELD CENTER, CT--Continued WATER-QUALITY DATA, WATER YEAR OCTOBER 1994 TO SEPTEMBER 1995 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) NOV 1994 16... 302 0.030 4.60 0.040 0.56 0.60 0.40 5.2 1.00 0.980 0.980 6 JAN 1995 30... 254 0.020 2.60 0.130 0.27 0.40 0.30 3.0 0.240 0.190 0.190 8 MAR 27... 240 0.020 3.60 0.050 0.35 0.40 0.40 4.0 0.380 0.370 0.350 10 MAY 15... 278 0.040 4.00 0.160 0.54 0.70 0.50 4.7 0.120 0.060 0.050 10 JUN 02... 356 0.070 6.60 0.140 0.56 0.70 0.60 7.3 0.140 0.060 0.070 10 JUL 24... 228 0.030 3.10 0.100 0.60 0.70 0.50 3.8 0.110 0.060 0.070 30 AUG 22... 454 0.060 5.40 0.070 0.63 0.70 0.70 6.1 0.200 0.190 0.170 10 SEP 12... 458 0.040 13.0 0.070 0.73 0.80 0.70 14 0.210 0.180 0.170 10 CHRO- ANTI- BERYL- CADMIUM MIUM, CHRO- COPPER, IRON, MONY, BARIUM, LIUM, TOTAL CADMIUM TOTAL MIUM, COBALT, TOTAL COPPER, TOTAL IRON, DIS- DIS- DIS- RECOV- DIS- RECOV- DIS- DIS- RECOV- DIS- RECOV- DIS- SOLVED 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 (UG/L AS SB) AS BA) AS BE) AS CD) AS CD) AS CR) AS CR) AS CO) AS CU) AS CU) AS FE) AS FE) (01095) (01005) (01010) (01027) (01025) (01034) (01030) (01035) (01042) (01040) (01045) (01046) NOV 1994 16... <1 26 <1 <1 <1.0 <1 <1 <1 6 5 320 120 JAN 1995 30... <1 25 <1 -- <1.0 -- 1 <1 -- 2 -- 80 MAR 27... <1 25 <1 -- <1.0 -- <1 <1 -- 3 -- 130 MAY 15... <1 27 <1 -- <1.0 -- 1 <1 -- 3 -- 200 JUN 02... <1 31 <1 -- <1.0 -- <1 <1 -- 6 -- 150 JUL 24... <1 24 <1 -- <1.0 -- <1 <1 -- 4 -- 120 AUG 22... <1 30 <1 -- <1.0 -- 1 <1 -- 6 -- 35 SEP 12... 3 25 <1 -- <1.0 -- 1 <1 -- 7 -- 40 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) NOV 1994 16... <1 <1 67 3 2 3 <1.0 10 14 <1.0 5.2 JAN 1995 30... -- <1 75 <1 -- 3 <1.0 -- 8 <1.0 3.9 MAR 27... -- 1 85 1 -- 3 <1.0 -- 11 <1.0 4.4 MAY 15... -- <1 160 2 -- 3 <1.0 -- 7 <1.0 6.7 JUN 02... -- <1 210 11 -- 5 <1.0 -- 10 1.0 6.8 JUL 24... -- 1 89 3 -- 4 <1.0 -- 5 <1.0 8.8 AUG 22... -- <1 68 12 -- 4 <1.0 -- 12 1.0 6.2 SEP 12... -- <1 51 12 -- 6 <1.0 -- 15 <1.0 5.8