HEART RIVER BASIN 06345500 HEART RIVER NEAR RICHARDTON, ND-Continued WATER-QUALITY RECORDS PERIOD OF RECORD.--Water years 1950, 1972 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 07... 1015 7.8 -- -- -- 1,060 11.0 11.5 -- -- -- -- -- NOV 17... 1605 13 -- -- -- 1,970 9.0 0.5 -- -- -- -- -- DEC 16... 1410 9.2 -- -- -- 2,370 3.0 0.0 -- -- -- -- -- FEB 26... 1045 21 -- -- -- 1,860 4.5 0.0 -- -- -- -- -- MAR 17... 1145 575 7.9 6.9 408 393 8.0 2.5 100 22.7 11.6 10.0 2 APR 12... 1150 40 -- -- -- 1,160 7.0 5.0 -- -- -- -- -- MAY 26... 1135 22 -- -- -- 1,580 20.0 14.0 -- -- -- -- -- JUL 14... 1600 9.2 -- -- -- 1,720 30.5 28.0 -- -- -- -- -- AUG 30... 1205 7.1 8.3 8.2 1,230 1,230 21.0 18.5 220 37.3 31.3 12.4 5 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 07... -- -- -- -- -- -- -- -- -- -- -- -- -- NOV 17... -- -- -- -- -- -- -- -- -- -- -- -- -- DEC 16... -- -- -- -- -- -- -- -- -- -- -- -- -- FEB 26... -- -- -- -- -- -- -- -- -- -- -- -- -- MAR 17... 42.9 44 86 3.5 0.11 7.79 105 249 397 1.1 320 <1 <10 APR 12... -- -- -- -- -- -- -- -- -- -- -- -- -- MAY 26... -- -- -- -- -- -- -- -- -- -- -- -- -- JUL 14... -- -- -- -- -- -- -- -- -- -- -- -- -- AUG 30... 184 63 217 35.4 0.47 <2.00 361 794 15.2 5.4 20 <1 30 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 07... -- -- -- -- -- NOV 17... -- -- -- -- -- DEC 16... -- -- -- -- -- FEB 26... -- -- -- -- -- MAR 17... 80 <0.20 2 <1 240 APR 12... -- -- -- -- -- MAY 26... -- -- -- -- -- JUL 14... -- -- -- -- -- AUG 30... 10 <0.20 6 1 600 Remark codes used in this table: < -- Less than
