RED RIVER OF THE NORTH BASIN 05060000 MAPLE RIVER NEAR MAPLETON, ND-Continued WATER-QUALITY RECORDS PERIOD OF RECORD.--April 2001 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... 0920 3.7 -- -- -- 1,610 11.0 12.5 -- -- -- -- -- MAR 23... 1300 291 -- -- -- 651 6.0 0.5 -- -- -- -- -- APR 02... 1600 1,140 7.2 7.3 939 950 16.5 8.5 380 83.8 40.2 16.5 1 28... 1425 81 -- -- -- 1,650 33.0 16.0 -- -- -- -- -- JUN 09... 1450 795 -- -- -- 1,300 21.5 21.0 -- -- -- -- -- JUL 15... 1300 867 -- -- -- 480 26.5 26.0 -- -- -- -- -- AUG 02... 1640 87 7.8 8.1 1,140 1,110 26.5 26.5 420 96.0 43.6 11.0 2 SEP 04... 1255 4.6 -- -- -- 1,230 19.0 21.0 -- -- -- -- -- 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... -- -- -- -- -- -- -- -- -- -- -- -- -- MAR 23... -- -- -- -- -- -- -- -- -- -- -- -- -- APR 02... 56.9 24 142 36.7 0.17 23.5 283 604 1,930 5.2 40 <1 50 28... -- -- -- -- -- -- -- -- -- -- -- -- -- JUN 09... -- -- -- -- -- -- -- -- -- -- -- -- -- JUL 15... -- -- -- -- -- -- -- -- -- -- -- -- -- AUG 02... 94.2 32 258 32.3 0.23 29.2 312 746 182 13.0 40 <1 60 SEP 04... -- -- -- -- -- -- -- -- -- -- -- -- -- 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... -- -- -- -- -- MAR 23... -- -- -- -- -- APR 02... 470 <0.20 3 5 320 28... -- -- -- -- -- JUN 09... -- -- -- -- -- JUL 15... -- -- -- -- -- AUG 02... 10 <0.20 4 2 390 SEP 04... -- -- -- -- -- Remark codes used in this table: < -- Less than
