KNIFE RIVER BASIN 06340000 SPRING CREEK AT ZAP, ND-Continued WATER-QUALITY RECORDS PERIOD OF RECORD.--Water years 1969-70, 1974 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 01... 1230 5.3 -- -- -- 1,980 10.0 7.5 -- -- -- -- -- NOV 19... 1130 7.7 -- -- -- 2,140 5.0 0.0 -- -- -- -- -- JAN 09... 1135 6.4 -- -- -- 1,510 -5.0 0.0 -- -- -- -- -- FEB 25... 1250 8.0 -- -- -- 1,810 0.0 0.5 -- -- -- -- -- MAR 22... 1335 182 7.8 7.2 729 730 10.0 2.3 190 35.8 24.7 9.50 3 APR 07... 1300 22 -- -- -- 1,180 7.0 5.0 -- -- -- -- -- MAY 19... 1012 10 -- -- -- 1,840 14.0 16.5 -- -- -- -- -- JUN 28... 1215 6.4 -- -- -- 1,730 24.0 18.0 -- -- -- -- -- AUG 25... 1315 6.0 8.6 8.6 2,160 2,120 19.3 18.3 380 50.0 61.1 8.90 8 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 01... -- -- -- -- -- -- -- -- -- -- -- -- -- NOV 19... -- -- -- -- -- -- -- -- -- -- -- -- -- JAN 09... -- -- -- -- -- -- -- -- -- -- -- -- -- FEB 25... -- -- -- -- -- -- -- -- -- -- -- -- -- MAR 22... 84.1 47 130 4.1 0.18 8.62 232 470 235 <1.0 340 <1 20 APR 07... -- -- -- -- -- -- -- -- -- -- -- -- -- MAY 19... -- -- -- -- -- -- -- -- -- -- -- -- -- JUN 28... -- -- -- -- -- -- -- -- -- -- -- -- -- AUG 25... 344 66 398 10.9 0.48 2.46 747 1,460 23.9 5.3 60 <1 90 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 01... -- -- -- -- -- NOV 19... -- -- -- -- -- JAN 09... -- -- -- -- -- FEB 25... -- -- -- -- -- MAR 22... 70 <0.20 <1 <1 640 APR 07... -- -- -- -- -- MAY 19... -- -- -- -- -- JUN 28... -- -- -- -- -- AUG 25... 20 <0.20 2 <1 1,500 Remark codes used in this table: < -- Less than
