CONNECTICUT RIVER BASIN 01192500 HOCKANUM RIVER NEAR EAST HARTFORD, CT WATER-QUALITY RECORDS PERIOD OF RECORD.--Water years 1954-55, 1961-62, 1968-69 , October 1991 to current year. REMARKS.--The instantaneous record values will not necessarily fall within the corresponding daily range of the continuous records. 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) OCT 14... 1230 50 405 7.8 21.0 15.5 4.4 10.6 106 10000 520 DEC 05... 1330 86 336 7.4 4.5 6.0 2.0 11.7 96 600 236 FEB 18... 1350 454 215 7.2 5.5 3.5 14 13.1 100 5200 3000 APR 13... 0845 187 218 7.5 11.0 10.0 2.6 10.9 96 180 K16 JUN 22... 1030 111 227 7.5 23.0 20.5 4.8 8.6 96 480 196 JUL 10... 0840 105 225 7.7 25.0 20.5 3.5 8.9 100 960 132 AUG 07... 1300 58 323 7.6 30.5 23.5 3.5 8.8 104 9400 128 SEP 17... 1250 45 415 7.6 24.5 21.0 4.6 9.3 104 980 K117 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 14... 100 32 5.4 36 4.8 0 87 71 35 45 .27 DEC 05... 88 27 5.1 27 4.4 0 62 51 26 43 .20 FEB 18... 44 13 2.7 21 1.8 0 33 27 15 35 <.10 APR 13... 55 17 3.2 18 2.1 0 38 31 15 28 <.10 JUN 22... 64 20 3.6 21 2.6 0 44 36 17 30 .14 JUL 10... 67 21 3.8 19 2.5 0 37 30 17 30 .10 AUG 07... 89 28 4.6 29 4.9 0 51 42 28 40 .24 SEP 17... 100 33 5.3 35 5.2 0 67 55 41 45 .31 CONNECTICUT RIVER BASIN 01192500 HOCKANUM RIVER NEAR EAST HARTFORD, 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) OCT 14... 8.5 243 255 .026 4.16 .040 1.4 1.4 .53 5.6 DEC 05... 11 203 205 .153 3.46 .342 .50 .84 .77 4.3 FEB 18... 7.4 129 140 .026 1.32 .264 .34 .61 .40 1.9 APR 13... 7.4 126 131 .024 1.62 .080 .31 .39 .42 2.0 JUN 22... 9.3 154 159 .022 1.95 .172 .41 .59 .50 2.5 JUL 10... 9.4 152 166 .011 2.05 .049 .56 .61 .39 2.7 AUG 07... 9.6 211 217 .016 4.41 .049 .63 .68 .51 5.1 SEP 17... 9.1 245 263 -- -- -- -- -- -- -- 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 14... .781 .743 .680 12 <1.0 67 <1.0 <1.0 <1.0 <1.0 DEC 05... .469 .419 .403 10 <1.0 64 <1.0 <1.0 <1.0 <1.0 FEB 18... .121 .067 .061 20 <1.0 39 <1.0 <1.0 <1.0 <1.0 APR 13... .185 .159 .143 20 <1.0 48 <1.0 <1.0 <1.0 <1.0 JUN 22... .298 .230 .222 15 <1.0 57 <1.0 <1.0 <1.0 <1.0 JUL 10... .314 .227 .198 14 <1.0 54 <1.0 <1.0 <1.0 <1.0 AUG 07... .534 .499 .459 25 <1.0 68 <1.0 <1.0 <1.0 <1.0 SEP 17... -- -- -- 16 <1.0 75 <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 14... 4.0 48 <1.0 87 1.5 1.4 <1.0 52 <1.0 5.8 DEC 05... 3.4 110 <1.0 106 1.2 <1.0 <1.0 31 <1.0 5.1 FEB 18... 3.3 79 <1.0 69 <1.0 <1.0 <1.0 10 <1.0 4.7 APR 13... 2.5 140 <1.0 64 <1.0 <1.0 <1.0 7.6 <1.0 4.5 JUN 22... 3.8 210 <1.0 89 1.3 <1.0 <1.0 9.9 <1.0 4.4 JUL 10... 3.3 230 <1.0 67 1.2 <1.0 <1.0 11 <1.0 5.5 AUG 07... 3.9 100 <1.0 75 1.6 1.0 <1.0 23 <1.0 5.0 SEP 17... 3.6 75 <1.0 84 2.7 1.2 <1.0 31 <1.0 5.6 CONNECTICUT RIVER BASIN 01192500 HOCKANUM RIVER NEAR EAST HARTFORD, CT--Continued REMARKS--Continuous water-quality monitoring equipment was used to collect additional data for short periods at this station. All records rated good, except for dissolved oxygen records, which are rated poor. Date Specific conductance (ms/cm) pH (Standard units) Water temperature degrees Celsius Turbidity (NTU) Dissolved oxygen (mg/L) Max Min Mean Max Min Max Min Mean Max Min Mean Max Min Mean 05-02-98 238 7.6 7.3 17.0 23 9.4 05-03-98 245 234 239 7.6 7.3 16.5 14.5 15.5 13 5.3 8.5 11.2 10.6 10.8 05-04-98 254 236 244 7.7 7.3 17.5 14.5 16.0 16 5.1 6.9 11.4 10.6 11.0 05-05-98 257 238 248 7.5 7.2 17.0 15.5 16.5 21 6.8 9.3 11.2 10.5 10.8 05-06-98 257 168 218 7.2 7.0 17.0 16.0 16.5 64 8.8 22 10.9 10.5 10.7 05-07-98 205 160 186 7.1 6.9 19.0 15.5 17.0 880 13 54 10.6 10.5 10.6 05-08-98 219 203 210 7.2 7.1 17.0 16.5 16.5 15 8.9 11 10.6 10.4 10.5 05-09-98 219 190 209 7.2 7.1 16.5 14.5 15.5 23 7.9 13 10.7 10.4 10.5 05-10-98 203 151 179 7.1 6.8 14.5 13.0 14.0 33 13 20 10.8 10.5 10.7 05-11-98 161 6.8 13.0 20 12 10.4 CONNECTICUT RIVER BASIN 01192500 HOCKANUM RIVER NEAR EAST HARTFORD, CT--Continued