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ANNUAL HYDROLOGIC REPORT <br /> 1993 <br /> COAL BASIN <br /> Surface Water <br /> Parameter Result Parameter Result <br /> #20 COAL CREEK <br /> 618/93 11/5/93 Hist. Max. Hist. Min. <br /> Flow (cfs) 202 Flow (cfs) 5.61 222 1 <br /> Temperature (OF) 45 Temperature (OF) 37 58 31 <br /> pH 8.8 pH 8.8 8.9 7 <br /> Conductivity 210 Conductivity 1700 1900 125 <br /> Alkalinity 94 mg/1 Alkalinity 470 mg/1 496 52 <br /> Bicarbonate as 94 mg/1 Bicarbonate as 442 mg/1 472 52 <br /> CaCO3 CaCO3 <br /> Carbonate as CaCO3 0 mg/1 Carbonate as 28* mg/1 24 0 <br /> CaCO3 <br /> Calcium, dissolved 31 mg/1 Calcium, dissolved 43 mg/1 264 16 <br /> Chloride 1 mg/1 Chloride 24 mg/1 42 -1 <br /> Magnesium, 10 mg/1 Magnesium, 21 mg/1 32 0 <br /> dissolved dissolved <br /> Hardness as CaCO3 119 mg/1 Hardness as CaCO3 194 mg/1 <br /> SAR in water .44 SAR in water 11.51 14 1 <br /> Sodium, dissolved 11 Sodium, dissolved 364 mg/1 436 13 <br /> Sulfate 27 mg/1 Sulfate 521 mg/1 572 16 <br /> Anions (sum) 2.47 meq/1 Anions (sum) 21.01 <br /> meq/1 <br /> TDS Ratio, 1.07 TDS Ratio, .97 <br /> (gra v./ca/c.) (gra v./ca/c.) <br />