THAMES RIVER BASIN 01125100 FRENCH RIVER AT NORTH GROSVENORDALE, CT LOCATION.--Lat 4158'41", long 7154'03", at Red Bridge Road, 0.5 mi south of North Grosvenordale, 0.45 mi downstream of Backwater Brook, 1.2 mi upstream of Stoud Brook. DRAINAGE AREA.--101 mi2. PERIOD OF RECORD.--October 1991 to current year. WATER-QUALITY DATA, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DIS- PH OXYGEN, COLI- ENTERO- CHARGE, SPE- WATER DIS- FORM, COCCI INST. CIFIC WHOLE SOLVED FECAL, ME,MF CUBIC CON- FIELD TEMPER- TEMPER- TUR- OXYGEN, (PER- 0.45 WATER FEET DUCT- (STAND- ATURE ATURE BID- DIS- CENT UM-MF TOTAL DATE TIME PER ANCE ARD AIR WATER ITY SOLVED SATUR- (COLS./ (COL / SECOND (US/CM) UNITS) (DEG C) (DEG C) (NTU) (MG/L) ATION) 100 ML) 100 ML) (00061) (00095) (00400) (00020) (00010) (00076) (00300) (00301) (31616) (31649) NOV 19... 1210 37 190 7.5 4.5 4.0 2.0 13.8 106 51 K13 JAN 21... 1200 180 199 7.2 2.0 2.0 1.1 13.5 99 6000 21 MAR 19... 1120 900 120 7.0 2.5 4.0 2.0 13.3 102 600 460 MAY 20... 1050 220 126 7.3 24.0 19.5 2.7 9.0 100 28 K8 JUN 23... 1040 370 116 7.2 19.5 22.0 2.7 8.3 96 130 172 JUL 22... 1050 43 189 7.5 32.0 25.0 2.0 7.3 90 140 160 AUG 19... 1045 38 191 7.3 23.5 23.5 1.9 7.6 89 120 208 SEP 15... 1030 17 247 7.8 28.5 22.0 2.7 9.9 114 26 60 CAR- BICAR- ALKA- HARD- MAGNE- POTAS- BONATE BONATE LINITY CHLO- FLUO- NESS CALCIUM SIUM, SODIUM, SIUM, WATER WATER WAT DIS SULFATE RIDE, RIDE, TOTAL DIS- DIS- DIS- DIS- DIS IT DIS IT TOT IT DIS- DIS- DIS- (MG/L SOLVED SOLVED SOLVED SOLVED FIELD FIELD FIELD SOLVED SOLVED SOLVED DATE AS (MG/L (MG/L (MG/L (MG/L MG/L AS MG/L AS MG/L AS (MG/L (MG/L (MG/L CACO3) AS CA) AS MG) AS NA) AS K) CO3 HCO3 CACO3 AS SO4) AS CL) AS F) (00900) (00915) (00925) (00930) (00935) (00452) (00453) (39086) (00945) (00940) (00950) NOV 19... 29 9.1 1.6 22 2.9 0 21 17 13 30 <.10 JAN 21... 28 8.5 1.5 24 2.1 0 12 10 12 39 <.10 MAR 19... 17 5.1 1.0 14 1.6 0 9 8 8.1 21 <.10 MAY 20... 21 6.5 1.2 15 1.7 0 13 11 7.8 23 <.10 JUN 23... 21 6.5 1.1 14 1.6 0 13 11 6.2 21 <.10 JUL 22... 28 8.8 1.5 28 2.9 0 40 33 8.0 28 <.10 AUG 19... 43 14 1.8 21 2.8 0 31 25 10 32 <.10 SEP 15... 36 11 1.9 34 4.4 0 40 33 15 37 <.10 THAMES RIVER BASIN 01125100 FRENCH RIVER AT NORTH GROSVENORDALE, CT--Continued WATER-QUALITY DATA, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 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) NOV 19... 3.8 106 92 <.010 1.05 <.020 -- .38 .34 1.4 JAN 21... 5.4 114 106 .062 .606 <.020 -- .22 .22 .83 MAR 19... 4.7 69 74 .010 .271 .032 .29 .32 .19 .60 MAY 20... 3.2 85 87 <.010 .438 .053 .38 .43 .35 .87 JUN 23... 4.0 84 82 <.010 .373 .134 .33 .46 .37 .83 JUL 22... 3.2 129 123 .014 .861 .083 .64 .73 .50 1.6 AUG 19... 3.9 120 121 .015 .599 .094 .47 .57 .31 1.2 SEP 15... 3.1 150 150 .030 2.17 .086 .87 .95 .57 3.1 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) NOV 19... .101 .081 .086 17 <1.0 11 <1.0 <1.0 <1.0 <1.0 JAN 21... .042 .047 .039 37 <1.0 13 <1.0 <1.0 <1.0 <1.0 MAR 19... .029 <.010 <.010 67 <1.0 9.8 <1.0 <1.0 <1.0 <1.0 MAY 20... .044 .015 .025 37 <1.0 11 <1.0 <1.0 <1.0 <1.0 JUN 23... .053 .018 .022 36 <1.0 11 <1.0 <1.0 <1.0 <1.0 JUL 22... .082 .049 .041 51 <1.0 11 <1.0 <1.0 1.5 <1.0 AUG 19... .048 .029 .036 31 <1.0 14 <1.0 <1.0 1.0 <1.0 SEP 15... .083 .053 .046 45 <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) NOV 19... 3.3 170 <1.0 41 <1.0 <1.0 <1.0 9.3 <1.0 4.7 JAN 21... 2.3 86 <1.0 38 <1.0 <1.0 <1.0 10 <1.0 4.9 MAR 19... 1.9 66 <1.0 19 <1.0 <1.0 <1.0 11 <1.0 5.4 MAY 20... 2.7 310 <1.0 75 <1.0 <1.0 <1.0 5.0 <1.0 6.5 JUN 23... 2.5 270 2.2 57 <1.0 1.2 <1.0 6.2 <1.0 7.2 JUL 22... 4.4 390 1.1 22 <1.0 1.2 <1.0 4.8 <1.0 7.4 AUG 19... 3.0 340 <1.0 44 <1.0 <1.0 <1.0 2.5 <1.0 4.9 SEP 15... 3.9 280 <1.0 32 <1.0 1.1 <1.0 2.5 <1.0 7.2