RED RIVER OF THE NORTH BASIN 05099600 PEMBINA RIVER AT WALHALLA, ND-Continued WATER-QUALITY RECORDS PERIOD OF RECORD.--Water years 1962-90, 1992-95, 2000 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 08... 0900 12 -- -- -- 960 13.0 12.5 -- -- -- -- -- JAN 12... 1605 6.0 -- -- -- 631 -2.5 0.0 -- -- -- -- -- FEB 19... 0945 8.6 -- -- -- 881 3.0 0.0 -- -- -- -- -- MAR 17... 1245 12 -- -- -- 586 2.5 2.0 -- -- -- -- -- APR 07... 1110 3,480 7.6 7.2 459 445 3.0 5.5 150 38.3 12.8 9.00 0.9 JUN 02... 1240 1,800 -- -- -- 755 25.0 14.0 -- -- -- -- -- 15... 1145 858 -- -- -- 1,780 17.5 15.0 -- -- -- -- -- JUL 13... 1245 395 -- -- -- 807 -- 23.5 -- -- -- -- -- AUG 25... 1100 215 8.4 8.2 781 821 19.2 15.1 270 65.4 25.3 9.20 1 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 08... -- -- -- -- -- -- -- -- -- -- -- -- -- JAN 12... -- -- -- -- -- -- -- -- -- -- -- -- -- FEB 19... -- -- -- -- -- -- -- -- -- -- -- -- -- MAR 17... -- -- -- -- -- -- -- -- -- -- -- -- -- APR 07... 25.1 25 101 7.2 0.25 19.4 103 258 2,590 3.6 160 <1 20 JUN 02... -- -- -- -- -- -- -- -- -- -- -- -- -- 15... -- -- -- -- -- -- -- -- -- -- -- -- -- JUL 13... -- -- -- -- -- -- -- -- -- -- -- -- -- AUG 25... 55.4 30 202 11.1 0.30 21.8 199 489 295 5.3 80 <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 08... -- -- -- -- -- JAN 12... -- -- -- -- -- FEB 19... -- -- -- -- -- MAR 17... -- -- -- -- -- APR 07... 40 <0.20 3 5 180 JUN 02... -- -- -- -- -- 15... -- -- -- -- -- JUL 13... -- -- -- -- -- AUG 25... 20 <0.20 4 3 350 Remark codes used in this table: < -- Less than
