QUINNIPIAC RIVER BASIN 01196222 QUINNIPIAC RIVER NEAR MERIDEN, CT LOCATION.--Lat 4131'45", long 7251'50", New Haven County, Hydrologic Unit 01100004, at bridge on Cheshire Street, 3 mi west of Meriden, and 1.7 mi upstream from Hanover Pond. DRAINAGE AREA.--69.6 mi2. PERIOD OF RECORD.--Water year 1974 to current year. WATER-QUALITY DATA, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 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) OCT 18... 1200 78 323 7.3 11.0 13.0 1.5 9.0 85 720 75 DEC 12... 1330 345 258 7.4 6.0 5.0 5.1 12.3 95 800 160 FEB 10... 1315 168 267 7.6 6.0 3.0 2.4 13.3 99 780 240 APR 09... 1300 197 264 7.8 8.0 9.0 2.0 11.6 101 220 97 JUN 23... 1245 94 344 7.5 28.0 20.5 4.0 7.2 80 170 57 JUL 22... 1300 183 223 7.4 25.5 19.0 19 9.3 81 5800 4900 AUG 07... 1245 62 321 7.5 25.0 18.5 3.9 7.8 83 400 132 SEP 18... 1230 46 399 7.5 27.0 18.0 2.2 8.3 88 140 148 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) OCT 18... 100 33 4.8 19 2.5 0 84 69 17 34 .10 DEC 12... 73 23 3.7 21 1.6 0 55 45 13 35 <.10 FEB 10... 78 25 3.8 18 1.6 0 61 50 14 31 <.10 APR 09... 80 26 3.8 17 1.5 0 63 52 14 31 <.10 JUN 23... 110 36 5.5 22 2.8 0 87 71 16 39 .15 JUL 22... 73 24 3.3 14 1.9 0 59 48 11 24 .13 AUG 07... 96 31 4.6 21 2.6 0 78 64 17 37 .13 SEP 18... 120 40 5.7 27 4.0 0 92 75 21 44 .23 QUINNIPIAC RIVER BASIN 01196222 QUINNIPIAC RIVER NEAR MERIDEN, CT--Continued WATER-QUALITY DATA, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997 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 18... 13 181 198 .030 3.40 <.015 -- .30 <.20 3.7 DEC 12... 11 149 160 .020 1.60 .060 .24 .30 <.20 1.9 FEB 10... 11 155 160 .030 2.40 .070 .23 .30 .20 2.7 APR 09... 9.5 156 140 .010 1.70 <.015 -- .20 <.20 1.9 JUN 23... 14 229 262 .031 4.49 .059 .45 .51 .33 5.0 JUL 22... 8.9 149 178 .026 2.57 .227 .54 .76 .34 3.3 AUG 07... 12 208 215 .015 3.87 .040 .37 .41 .29 4.3 SEP 18... 14 249 259 .024 5.96 .027 .34 .36 .45 6.3 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 18... .370 .340 .370 5.0 <1.0 98 <1.0 <1.0 <1.0 <1.0 DEC 12... .120 .090 .090 23 <1.0 67 <1.0 <1.0 1.0 <1.0 FEB 10... .240 .160 .170 10 <1.0 76 <1.0 <1.0 <1.0 <1.0 APR 09... .180 .130 .150 13 <1.0 71 <1.0 <1.0 1.0 <1.0 JUN 23... .640 .587 .557 8.6 <1.0 106 <1.0 <1.0 1.2 <1.0 JUL 22... .310 .239 .244 9.2 <1.0 70 <1.0 <1.0 <1.0 <1.0 AUG 07... .583 .547 .525 9.1 <1.0 95 <1.0 <1.0 <1.0 <1.0 SEP 18... .833 .808 .814 7.1 1.1 113 <1.0 <1.0 1.4 <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 18... 2.0 57 <1.0 54 <1.0 2.0 <1.0 37 <1.0 3.6 DEC 12... 2.0 110 <1.0 53 <1.0 1.0 <1.0 17 <1.0 3.5 FEB 10... 1.0 78 <1.0 84 <1.0 <1.0 <1.0 20 <1.0 3.0 APR 09... 1.6 110 <1.0 72 <1.0 <1.0 <1.0 14 <1.0 2.4 JUN 23... 2.6 110 <1.0 120 <1.0 1.4 <1.0 14 <1.0 3.8 JUL 22... 2.9 48 <1.0 57 <1.0 1.2 <1.0 12 <1.0 6.0 AUG 07... 3.6 92 <1.0 58 <1.0 1.7 <1.0 15 <1.0 4.9 SEP 18... 3.8 70 <1.0 48 <1.0 1.8 <1.0 20 <1.0 2.9 QUINNIPIAC RIVER BASIN 01196222 QUINNIPIAC RIVER NEAR MERIDEN, CT--Continued REMARKS--Continuous water-quality monitoring equipment was used to collect additional data for short periods at this station. Date Specific conductance (mS/cm) pH (standard units) Water temperature (degrees Celsius) Turbidity (NTU) Dissolved oxygen (mg/L) Max Min Mean Max Min Mean Max Min Mean Max Min Mean Max Min Mean 07-24-97 340 296 312 7.4 7.3 7.3 20.0 18.0 18.5 5.4 1.6 3.0 8.4 7.6 7.9 07-25-97 340 283 311 7.4 7.3 7.4 18.5 17.0 17.5 7.3 2.3 4.5 8.9 7.9 8.4 07-26-97 334 290 304 7.4 7.3 7.4 20.0 17.0 18.5 4.9 1.3 2.8 8.9 8.1 8.4 07-27-97 344 317 327 7.5 7.3 7.4 21.0 18.5 19.5 3.9 1.2 2.0 8.9 7.6 8.2 07-28-97 345 323 333 7.5 7.3 7.4 22.0 20.0 21.0 4.5 .84 1.9 8.8 7.3 7.9 07-29-97 358 332 343 7.5 7.3 7.4 22.0 20.0 21.0 3.3 .71 1.6 8.7 7.1 7.9 07-30-97 368 342 353 7.5 7.4 7.4 20.5 18.0 19.5 3.2 .66 1.5 9.3 7.4 8.3 07-31-97 369 343 355 7.5 7.3 7.4 20.5 18.0 19.0 14 .68 2.0 9.4 7.5 8.5 08-01-97 373 344 357 7.6 7.3 7.4 20.5 18.5 19.5 12 .32 1.5 9.6 7.6 8.5 08-02-97 372 347 358 7.6 7.3 7.4 21.5 19.5 20.5 4.1 .29 1.2 9.5 7.4 8.4 08-03-97 374 328 355 7.6 7.3 7.4 22.0 20.0 21.0 5.6 .26 1.4 9.4 7.2 8.1 08-04-97 345 258 317 7.4 7.3 7.3 21.5 20.0 20.5 5.1 .94 2.5 8.7 6.6 7.6 08-05-97 263 189 211 7.3 7.1 7.2 21.0 19.5 20.0 16 3.1 7.6 8.3 7.5 7.9 08-06-97 277 182 219 7.3 7.1 7.2 21.0 19.0 20.0 21 1.5 7.7 8.5 7.5 8.0 QUINNIPIAC RIVER BASIN 01196222 QUINNIPIAC RIVER NEAR MERIDEN, CT--Continued