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 1998 TO SEPTEMBER 1999 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 27... 1030 58 339 7.6 14.0 11.5 2.0 11.2 101 1100 200 DEC 14... 1515 56 370 7.7 4.0 6.5 1.6 12.9 105 K1200 100 FEB 17... 1350 166 140 7.4 6.5 4.5 2.8 12.8 99 500 212 APR 13... 0900 139 246 7.5 8.0 10.0 2.3 10.8 96 K300 136 JUN 17... 1330 46 376 7.7 19.5 20.0 5.7 9.7 107 880 192 JUL 20... 1410 80 302 7.5 28.5 26.0 7.2 7.8 98 7300 4300 AUG 16... 1400 47 381 8.3 28.5 24.5 23 9.5 113 1400 880 SEP 22... 1200 125 275 7.3 12.0 16.5 4.8 8.8 92 3700 680 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 27... 91 28 5.0 27 3.8 0 72 59 27 38 .10 DEC 14... 95 29 5.3 30 3.8 0 74 61 30 43 .23 FEB 17... 51 15 3.1 20 2.3 0 34 28 16 31 .10 APR 13... 56 17 3.4 21 2.2 0 40 33 16 31 .11 JUN 17... 98 31 5.2 33 4.6 0 68 56 34 47 .25 JUL 20... 69 21 3.9 28 3.7 0 55 45 28 36 .17 AUG 16... 90 28 4.8 38 4.8 0 73 60 34 45 .20 SEP 22... 71 21 4.1 21 3.7 0 46 38 30 32 .14 CONNECTICUT RIVER BASIN 01192500 HOCKANUM RIVER NEAR EAST HARTFORD, CT--Continued WATER-QUALITY DATA, WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999 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 27... 11 204 205 .047 3.19 .153 .57 .72 .57 3.9 DEC 14... 11 210 214 .048 3.65 .139 .65 .79 .61 4.4 FEB 17... 8.8 132 136 .523 1.75 .226 .47 .70 .58 2.4 APR 13... 6.9 139 144 .677 1.91 .152 .55 .71 .66 2.6 JUN 17... 8.2 237 241 .020 3.54 .062 1.0 1.1 .68 4.6 JUL 20... 7.8 179 190 .021 2.07 .094 .94 1.0 .56 3.1 AUG 16... 10 227 238 .011 2.63 <.020 -- 1.7 .62 4.3 SEP 22... 9.7 169 166 .010 2.26 .118 .61 .73 .50 3.0 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 27... .216 .170 .154 5.8 <1.0 73 <1.0 <1.0 <1.0 <1.0 DEC 14... .570 .484 .455 12 <1.0 71 <1.0 <1.0 <1.0 <1.0 FEB 17... .251 .214 .187 18 <1.0 45 <1.0 <1.0 <1.0 <1.0 APR 13... .392 .336 .216 18 <1.0 50 <1.0 <1.0 <1.0 <1.0 JUN 17... .832 .674 .571 28 <1.0 71 <1.0 <1.0 <1.0 <1.0 JUL 20... .326 .209 .181 26 <1.0 60 <1.0 <1.0 <1.0 <1.0 AUG 16... .541 .331 .329 67 <1.0 60 <1.0 <1.0 <1.0 <1.0 SEP 22... .399 .308 .287 13 <1.0 64 <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 27... 3.8 71 <1.0 83 <1.0 <1.0 <1.0 15 <1.0 4.4 DEC 14... 4.0 84 <1.0 93 <1.0 1.6 <1.0 28 <1.0 4.1 FEB 17... 3.9 110 <1.0 69 <1.0 1.1 <1.0 16 <1.0 4.1 APR 13... 2.8 160 <1.0 81 <1.0 <1.0 <1.0 13 <1.0 4.8 JUN 17... 3.8 120 <1.0 72 3.5 <1.0 <1.0 31 <1.0 5.9 JUL 20... 2.9 80 <1.0 125 2.1 1.2 <1.0 15 <1.0 8.6 AUG 16... 3.6 62 <1.0 68 2.7 1.5 <1.0 23 <1.0 12 SEP 22... 4.0 120 <1.0 90 1.1 1.0 <1.0 21 <1.0 5.9 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. March deployment: all records rated good, except for temperature and specific conductance records, which are rated excellent. August to September deployment: all records rated excellent, except for dissolved oxygen records, which are rated good, and turbidity records, which are rated fair. [--, data not available due to partial record] 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 03-15-99 -- 320 -- 7.6 7.4 -- -- -- -- 8.8 -- -- 13.3 -- 03-16-99 320 282 293 7.7 7.4 6.5 3.0 4.5 8.8 4.5 6.4 13.7 13.1 13.4 03-17-99 287 265 275 7.8 7.3 8.0 4.0 5.5 7.5 4.0 5.1 13.4 12.5 13.0 03-18-99 265 253 259 7.8 7.3 9.5 6.0 7.5 5.7 3.4 4.2 12.7 11.9 12.4 03-19-99 262 252 256 7.9 7.3 9.0 6.5 7.5 6.5 3.7 4.3 13.1 11.9 12.4 03-20-99 260 250 255 7.9 7.2 9.0 6.0 7.0 8.0 3.5 4.5 13.3 12.1 12.7 03-21-99 260 246 253 8.1 7.2 8.0 5.5 7.0 5.7 2.9 3.8 13.9 12.1 12.9 03-22-99 262 198 217 7.3 7.0 8.0 6.5 7.5 49 5.7 28 12.5 12.0 12.2 03-23-99 203 191 197 7.3 7.1 8.5 6.0 7.0 18 13 15 13.0 12.5 12.8 03-24-99 206 199 202 7.3 7.1 7.5 6.0 7.0 13 7.4 9.2 12.9 12.5 12.8 03-25-99 213 197 204 7.5 7.2 9.0 6.5 7.5 7.7 5.0 6.1 13.1 12.5 12.8 03-26-99 216 204 210 7.5 7.2 9.5 6.5 7.5 5.5 4.2 4.7 13.1 12.3 12.7 03-27-99 218 209 214 7.6 7.2 0.0 6.5 8.0 5.1 3.5 4.3 13.2 12.2 12.7 03-28-99 219 177 207 7.3 7.2 8.0 7.0 7.5 39 4.5 12 13.0 12.2 12.6 03-29-99 212 -- -- -- 7.1 -- 7.0 -- 10 -- -- -- 12.4 -- 08-20-99 -- 411 -- 8.3 -- 23.5 -- -- -- -- -- 10.0 -- -- 08-21-99 414 364 389 7.7 7.4 20.5 18.5 19.0 50 23 32 9.1 8.2 8.6 08-22-99 416 366 391 8.3 7.5 20.5 18.0 19.0 38 18 29 9.9 8.3 8.9 08-23-99 439 387 410 7.9 7.4 23.5 18.0 20.5 30 14 21 9.1 8.0 8.6 08-24-99 443 389 415 8.3 7.4 23.5 18.5 21.0 64 14 26 9.4 8.0 8.7 08-25-99 428 397 418 8.6 7.4 24.0 19.0 21.5 55 12 32 9.7 7.8 8.7 08-26-99 429 389 410 8.5 7.4 21.5 20.0 20.5 67 10 32 9.2 7.2 8.2 08-27-99 420 377 399 8.9 7.6 23.0 20.5 21.5 94 40 55 8.8 6.8 7.7 08-28-99 434 398 420 8.1 7.6 24.5 20.0 22.0 97 11 27 7.9 6.8 7.3 08-29-00 432 397 420 8.1 7.5 24.0 20.0 22.0 23 8.2 15 7.9 6.8 7.3 08-30-99 432 399 421 8.2 7.7 21.0 18.0 19.5 45 12 22 8.3 7.1 7.7 08-31-99 437 399 425 8.7 7.8 22.0 17.0 19.5 51 20 33 8.3 7.4 7.9 CONNECTICUT RIVER BASIN 01192500 HOCKANUM RIVER NEAR EAST HARTFORD, CT--Continued 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 09-01-99 444 411 432 8.2 7.8 22.5 17.0 19.5 70 12 29 8.3 7.3 7.8 09-02-99 456 412 439 8.3 7.6 23.0 18.0 20.5 77 15 28 8.5 7.3 7.9 09-03-99 449 417 438 8.4 7.6 23.0 18.0 20.5 91 18 41 8.9 7.4 8.1 09-04-99 458 417 440 8.1 7.6 24.0 19.0 21.0 98 20 47 8.7 7.4 8.0 09-05-99 449 417 437 8.3 7.5 23.5 20.0 22.0 140 28 58 8.8 7.2 7.9 09-06-99 442 259 363 8.4 7.5 24.0 21.0 22.5 180 30 61 8.2 6.8 7.5 09-07-99 404 331 382 8.6 7.7 25.0 22.0 23.0 35 19 26 8.1 6.9 7.3 09-08-99 404 363 381 7.7 7.4 23.5 21.5 22.5 31 12 20 7.8 6.6 7.2 09-09-99 419 386 407 7.8 7.4 24.5 21.5 23.0 22 11 16 8.0 6.5 7.4 09-10-99 421 161 250 7.6 6.8 23.0 21.5 22.5 170 10 53 8.0 6.9 7.5 09-11-99 223 177 195 7.0 6.8 22.5 21.0 22.0 31 17 25 7.7 7.3 7.5 09-12-99 288 223 254 7.2 7.0 22.0 19.0 20.5 18 7.9 12 7.9 7.3 7.6 09-13-99 --- 266 --- --- 7.1 --- 18.5 --- 9.6 --- --- 8.0 7.5 --- CONNECTICUT RIVER BASIN 01192500 HOCKANUM RIVER NEAR EAST HARTFORD, CT--Continued CONNECTICUT RIVER BASIN 01192500 HOCKANUM RIVER NEAR EAST HARTFORD, CT--Continued