HEART RIVER MAIN STEM 06347000 ANTELOPE CREEK NEAR CARSON, ND-Continued WATER-QUALITY RECORDS PERIOD OF RECORD.--Water year 1999 to current year. WATER-QUALITY DATA, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 Date Time Instan- taneous dis- charge, cfs (00061) pH, water, unfltrd field, std units (00400) pH, water, unfltrd lab, std units (00403) Specif. conduc- tance, wat unf lab, uS/cm 25 degC (90095) Specif. conduc- tance, wat unf uS/cm 25 degC (00095) Temper- ature, air, deg C (00020) Temper- ature, water, deg C (00010) Hard- ness, water, mg/L as CaCO3 (00900) Calcium water, fltrd, mg/L (00915) Magnes- ium, water, fltrd, mg/L (00925) Potas- sium, water, fltrd, mg/L (00935) Sodium adsorp- tion ratio (00931) OCT 02... 1505 0.36 -- -- -- 909 20.0 10.5 -- -- -- -- -- MAR 22... 1510 53 7.6 7.4 717 723 4.5 3.5 250 48.7 30.7 11.0 2 APR 22... 1415 5.2 -- -- -- 1,060 15.5 12.5 -- -- -- -- -- JUN 04... 1430 2.1 -- -- -- 892 29.5 22.5 -- -- -- -- -- JUL 26... 0930 0.02 -- -- -- 859 26.0 21.0 -- -- -- -- -- SEP 01... 0920 0.11 8.4 8.4 796 778 23.5 18.0 260 30.6 45.2 7.90 2 WATER-QUALITY DATA, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 Date Sodium, water, fltrd, mg/L (00930) Sodium, percent (00932) ANC, wat unf fixed end pt, lab, mg/L as CaCO3 (90410) Chlor- ide, water, fltrd, mg/L (00940) Fluor- ide, water, fltrd, mg/L (00950) Silica, water, fltrd, mg/L (00955) Sulfate water, fltrd, mg/L (00945) Residue water, fltrd, sum of consti- tuents mg/L (70301) Residue water, fltrd, tons/d (70302) Arsenic water, fltrd, ug/L (01000) Iron, water, fltrd, ug/L (01046) Lead, water, fltrd, ug/L (01049) Lithium water, fltrd, ug/L (01130) OCT 02... -- -- -- -- -- -- -- -- -- -- -- -- -- MAR 22... 66.6 36 152 5.4 0.18 8.80 209 465 67.2 1.1 160 <1 30 APR 22... -- -- -- -- -- -- -- -- -- -- -- -- -- JUN 04... -- -- -- -- -- -- -- -- -- -- -- -- -- JUL 26... -- -- -- -- -- -- -- -- -- -- -- -- -- SEP 01... 74.9 37 289 9.8 0.31 <2.00 144 487 0.14 3.8 10 <1 60 WATER-QUALITY DATA, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 Date Mangan- ese, water, fltrd, ug/L (01056) Mercury water, fltrd, ug/L (71890) Molyb- denum, water, fltrd, ug/L (01060) Selen- ium, water, fltrd, ug/L (01145) Stront- ium, water, fltrd, ug/L (01080) OCT 02... -- -- -- -- -- MAR 22... 120 <0.20 2 1 500 APR 22... -- -- -- -- -- JUN 04... -- -- -- -- -- JUL 26... -- -- -- -- -- SEP 01... 20 <0.20 2 <1 440 Remark codes used in this table: < -- Less than
