PAWCATUCK RIVER BASIN 01118500 PAWCATUCK RIVER AT WESTERLY, RI--Continued WATER-QUALITY RECORDS PERIOD OF RECORD.--Water years 1953, 1963, 1976 to current year. PERIOD OF DAILY RECORD.-- SPECIFIC CONDUCTANCE: June 1978 to September 1992. WATER TEMPERATURES: June 1978 to September 1992. INSTRUMENTATION.--Water-quality monitor June 1978 to September 1992. REMARKS.--Instantaneous records are representative of the cross section while continuous records are based on point samples. EXTREMES FOR PERIOD OF DAILY RECORD.-- SPECIFIC CONDUCTANCE: Maximum, 354 microsiemens June 25, 1985; minimum, 27 microsiemens June 7, 1982. WATER TEMPERATURES: Maximum, 30.0C Aug. 9, 1980, Aug. 17, 18, 1987; minimum, 0.0C on many days during the winter period. WATER-QUALITY DATA, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DIS- PH OXYGEN, OXYGEN CHARGE, SPE- WATER DIS- DEMAND, INST. CIFIC WHOLE COLOR SOLVED CHEM- CUBIC CON- FIELD TEMPER- TEMPER- (PLAT- TUR- OXYGEN, (PER- ICAL FEET DUCT- (STAND- ATURE ATURE INUM- BID- DIS- CENT (HIGH DATE TIME PER ANCE ARD AIR WATER COBALT ITY SOLVED SATUR- LEVEL) SECOND (US/CM) UNITS) (DEG C) (DEG C) UNITS) (NTU) (MG/L) ATION) (MG/L) (00061) (00095) (00400) (00020) (00010) (00080) (00076) (00300) (00301) (00340) NOV 24... 1145 360 123 6.6 6.5 4.5 -- 2.7 13.1 102 -- MAR 16... 1110 1640 78 6.6 5.5 3.5 -- 1.6 13.1 97 -- JUN 03... 0630 744 90 6.8 18.0 18.5 110 1.7 8.3 92 -- AUG 27... 0945 302 157 7.3 28.0 23.0 -- 2.6 8.2 94 12 OXYGEN COLI- ENTERO- CAR- BICAR- ALKA- DEMAND, FORM, COCCI HARD- MAGNE- POTAS- BONATE BONATE LINITY BIO- FECAL, ME,MF NESS CALCIUM SIUM, SODIUM, SIUM, WATER WATER WAT DIS CHEM- 0.45 WATER TOTAL DIS- DIS- DIS- DIS- DIS IT DIS IT TOT IT ICAL, UM-MF TOTAL (MG/L SOLVED SOLVED SOLVED SOLVED FIELD FIELD FIELD DATE 5 DAY (COLS./ (COL / AS (MG/L (MG/L (MG/L (MG/L MG/L AS MG/L AS MG/L AS (MG/L) 100 ML) 100 ML) CACO3) AS CA) AS MG) AS NA) AS K) CO3 HCO3 CACO3 (00310) (31616) (31649) (00900) (00915) (00925) (00930) (00935) (00452) (00453) (39086) NOV 24... 1.0 58 25 19 5.1 1.6 15 1.4 0 9 7 MAR 16... 1.0 K4 K1 12 3.2 1.0 8.8 .94 0 4 3 JUN 03... 1.0 560 130 16 4.3 1.2 12 1.1 0 10 8 AUG 27... 1.0 2500 940 22 6.1 1.7 21 1.5 0 15 12 SOLIDS, RESIDUE NITRO- NITRO- NITRO- CHLO- FLUO- SILICA, RESIDUE TOTAL SOLIDS, GEN, GEN, GEN, NITRO- SULFATE RIDE, RIDE, DIS- AT 180 AT 105 RESIDUE NITRITE NO2+NO3 AMMONIA GEN, DIS- DIS- DIS- SOLVED DEG. C DEG. C, AT 105 DIS- DIS- DIS- ORGANIC SOLVED SOLVED SOLVED (MG/L DIS- SUS- DEG. C, SOLVED SOLVED SOLVED TOTAL DATE (MG/L (MG/L (MG/L AS SOLVED PENDED TOTAL (MG/L (MG/L (MG/L (MG/L AS SO4) AS CL) AS F) SIO2) (MG/L) (MG/L) (MG/L) AS N) AS N) AS N) AS N) (00945) (00940) (00950) (00955) (70300) (00530) (00500) (00613) (00631) (00608) (00605) NOV 24... 15 17 .12 9.5 83 20 93 <.010 .323 <.020 -- MAR 16... 8.4 12 <.10 6.3 57 4 58 .013 .253 .029 .12 JUN 03... 10 14 .11 6.2 72 -- 76 <.010 .329 .044 .48 AUG 27... 24 16 .11 7.5 104 -- -- <.010 .622 .021 .36 PAWCATUCK RIVER BASIN 01118500 PAWCATUCK RIVER AT WESTERLY, RI--Continued WATER-QUALITY DATA, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 NITRO- NITRO- PHOS- ALUM- GEN,AM- GEN,AM- PHOS- PHORUS INUM, ALUM- ANTI- BERYL- MONIA + MONIA + NITRO- PHOS- PHORUS ORTHO, TOTAL INUM, MONY, BARIUM, LIUM, ORGANIC ORGANIC GEN, PHORUS DIS- DIS- RECOV- DIS- DIS- DIS- DIS- TOTAL DIS. TOTAL TOTAL SOLVED SOLVED ERABLE SOLVED SOLVED SOLVED SOLVED DATE (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (UG/L (UG/L (UG/L (UG/L (UG/L AS N) AS N) AS N) AS P) AS P) AS P) AS AL) AS AL) AS SB) AS BA) AS BE) (00625) (00623) (00600) (00665) (00666) (00671) (01105) (01106) (01095) (01005) (01010) NOV 24... .32 .31 .64 .019 <.010 .025 170 114 <1.0 13 <1.0 MAR 16... .15 .17 .40 <.010 <.010 <.010 110 106 <1.0 9.4 <1.0 JUN 03... .53 .36 .86 <.010 .029 <.010 150 90 <1.0 12 <1.0 AUG 27... .38 .26 1.0 .041 .015 .014 -- 72 <1.0 14 <1.0 MANGA- CHRO- IRON, NESE, MANGA- MERCURY MOLYB- CADMIUM MIUM, COBALT, COPPER, TOTAL IRON, LEAD, TOTAL NESE, TOTAL DENUM, DIS- DIS- DIS- DIS- RECOV- DIS- DIS- RECOV- DIS- RECOV- DIS- SOLVED SOLVED SOLVED 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 AS CD) AS CR) AS CO) AS CU) AS FE) AS FE) AS PB) AS MN) AS MN) AS HG) AS MO) (01025) (01030) (01035) (01040) (01045) (01046) (01049) (01055) (01056) (71900) (01060) NOV 24... <.10 <1.0 <1.0 <1.0 430 260 <.50 65 50 <.10 <1.0 MAR 16... <1.0 <1.0 <1.0 <1.0 160 120 <1.0 28 27 <.10 <1.0 JUN 03... <1.0 <1.0 <1.0 <1.0 770 400 <1.0 70 51 <.10 <1.0 AUG 27... <1.0 <1.0 <1.0 <1.0 -- 490 <1.0 -- 33 <.10 <1.0 CHLOR- P,P'- P,P'- URANIUM ALDRIN, LINDANE DANE, DDD, DDE, NICKEL, SILVER, ZINC, NATURAL CARBON, TOTAL TOTAL TOTAL RECOVER RECOVER DIS- DIS- DIS- DIS- ORGANIC IN BOT- IN BOT- IN BOT- IN BOT- IN BOT- SOLVED SOLVED SOLVED SOLVED TOTAL PHENOLS TOM MA- TOM MA- TOM MA- TOM MA- TOM MA- DATE (UG/L (UG/L (UG/L (UG/L (MG/L TOTAL TERIAL TERIAL TERIAL TERIAL TERIAL AS NI) AS AG) AS ZN) AS U) AS C) (UG/L) (UG/KG) (UG/KG) (UG/KG) (UG/KG) (UG/KG) (01065) (01075) (01090) (22703) (00680) (32730) (39333) (39343) (39351) (39363) (39368) NOV 24... <1.0 <1.0 5.2 <1.0 8.6 <1 -- -- -- -- -- MAR 16... <1.0 <1.0 6.6 <1.0 6.0 -- -- -- -- -- -- JUN 03... <1.0 <1.0 4.0 <1.0 7.9 -- -- -- -- -- -- AUG 27... <1.0 <1.0 2.7 <1.0 5.5 <1 <.200 <.200 <3.00 <.500 <.200 P,P'- DI- ENDO- TOXA- HEPTA- HEPTA- METH- DDT, ELDRIN, SULFAN ENDRIN, PHENE, CHLOR, CHLOR OXY- PCB, MIREX, RECOVER TOTAL I TOTAL TOTAL TOTAL TOTAL EPOXIDE CHLOR, TOTAL TOTAL IN BOT- IN BOT- IN BOT- IN BOT- IN BOT- IN BOT- TOT. IN TOT. IN IN BOT- IN BOT- TOM MA- TOM MA- TOM MA- TOM MA- TOM MA- TOM MA- BOTTOM BOTTOM TOM MA- TOM MA- DATE TERIAL TERIAL TERIAL TERIAL TERIAL TERIAL MATL. MATL. TERIAL TERIAL (UG/KG) (UG/KG) (UG/KG) (UG/KG) (UG/KG) (UG/KG) (UG/KG) (UG/KG) (UG/KG) (UG/KG) (39373) (39383) (39389) (39393) (39403) (39413) (39423) (39481) (39519) (39758) NOV 24... -- -- -- -- -- -- -- -- -- -- MAR 16... -- -- -- -- -- -- -- -- -- -- JUN 03... -- -- -- -- -- -- -- -- -- -- AUG 27... <.500 <.200 <.200 <.200 <50.0 <.200 <.200 <2.50 <5.00 <.200 PAWCATUCK RIVER BASIN 01118500 PAWCATUCK RIVER AT WESTERLY, RI--Continued SUSPENDED SEDIMENT DISCHARGE, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DIS- SEDI- SED. CHARGE, MENT, SUSP. INST. SEDI- DIS- SIEVE CUBIC MENT, CHARGE, DIAM. FEET SUS- SUS- % FINER DATE TIME PER PENDED PENDED THAN SECOND (MG/L) (T/DAY) .062 MM (00061) (80154) (80155) (70331) NOV 24... 1145 360 4 3.9 60 JUN 03... 0630 744 7 14 79 AUG 27... 0945 302 4 3.3 71