HEART RIVER BASIN 06349000 HEART RIVER NEAR MANDAN, ND-Continued WATER-QUALITY RECORDS PERIOD OF RECORD.--Water years 1946-50, 1971-76, 1978 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 03... 1100 21 -- -- -- 1,690 15.0 9.0 -- -- -- -- -- DEC 09... 1330 21 -- -- -- 1,600 -6.0 0.0 -- -- -- -- -- MAR 12... 1200 1,770 8.0 --e 443 425 5.0 0.4 110 22.8 12.1 9.30 2 22... 1540 2,330 -- -- -- 651 11.0 2.5 -- -- -- -- -- APR 08... 1330 561 -- -- -- 1,030 13.0 11.0 -- -- -- -- -- MAY 25... 1105 93 -- -- -- 1,470 7.0 11.0 -- -- -- -- -- JUN 04... 1150 65 8.1 8.3 1,310 1,300 28.0 23.0 330 63.0 41.5 10.8 5 JUL 19... 1450 8.4 -- -- -- 1,390 28.0 29.0 -- -- -- -- -- 27... 1330 46 8.3 8.6 1,290 1,290 33.0 30.0 260 48.7 34.2 10.6 5 SEP 02... 1400 30 8.4 8.5 1,410 1,340 31.5 25.0 280 50.5 37.0 10.0 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) Ammonia + org-N, water, fltrd, mg/L as N (00623) Ammonia + org-N, water, unfltrd mg/L as N (00625) Ammonia water, fltrd, mg/L as N (00608) Ammonia water, unfltrd mg/L as N (00610) OCT 03... -- -- -- -- -- -- -- -- -- -- -- -- -- DEC 09... -- -- -- -- -- -- -- -- -- -- -- -- -- MAR 12... 46.2 46 108 4.2 0.13 6.27 103 264 1,290 -- -- -- -- 22... -- -- -- -- -- -- -- -- -- -- -- -- -- APR 08... -- -- -- -- -- -- -- -- -- -- -- -- -- MAY 25... -- -- -- -- -- -- -- -- -- -- -- -- -- JUN 04... 212 57 318 12.0 0.38 4.63 372 904 159 -- -- -- -- JUL 19... -- -- -- -- -- -- -- -- -- -- -- -- -- 27... 179 58 298 12.7 0.39 4.69 380 845 105 0.66 0.64 <0.010 <0.010 SEP 02... 200 60 313 15.1 0.35 2.97 408 910 73.2 0.62 0.57 <0.010 <0.010 WATER-QUALITY DATA, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 Date Nitrite + nitrate water fltrd, mg/L as N (00631) Nitrite + nitrate water unfltrd mg/L as N (00630) Phos- phorus, water, fltrd, mg/L (00666) Phos- phorus, water, unfltrd mg/L (00665) Total nitro- gen, water, fltrd, mg/L (00602) Total nitro- gen, water, unfltrd mg/L (00600) Arsenic water, fltrd, ug/L (01000) Iron, water, fltrd, ug/L (01046) Lead, water, fltrd, ug/L (01049) Lithium water, fltrd, ug/L (01130) Mangan- ese, water, fltrd, ug/L (01056) Mercury water, fltrd, ug/L (71890) Molyb- denum, water, fltrd, ug/L (01060) OCT 03... -- -- -- -- -- -- -- -- -- -- -- -- -- DEC 09... -- -- -- -- -- -- -- -- -- -- -- -- -- MAR 12... -- -- -- -- -- -- <1.0 350 <1 10 20 <0.20 2 22... -- -- -- -- -- -- -- -- -- -- -- -- -- APR 08... -- -- -- -- -- -- -- -- -- -- -- -- -- MAY 25... -- -- -- -- -- -- -- -- -- -- -- -- -- JUN 04... -- -- -- -- -- -- <1.0 10 <1 50 10 <0.20 3 JUL 19... -- -- -- -- -- -- -- -- -- -- -- -- -- 27... 0.024 0.020 <0.004 0.008 0.69 0.66 6.3 20 <1 40 <10 <0.20 5 SEP 02... <0.020 <0.020 0.022 0.031 0.64 0.59 4.2 10 <1 50 10 <0.20 4 WATER-QUALITY DATA, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 Date Selen- ium, water, fltrd, ug/L (01145) Stront- ium, water, fltrd, ug/L (01080) OCT 03... -- -- DEC 09... -- -- MAR 12... <1 220 22... -- -- APR 08... -- -- MAY 25... -- -- JUN 04... <1 660 JUL 19... -- -- 27... <1 680 SEP 02... <1 710 Remark codes used in this table: < -- Less than Null value qualifier codes used in this table: e -- Required equipment not functional/avail
