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n <br />U <br />• <br />TABLE 1 <br />STREAMFLOW DATA FROM AREA GAGING STATIONS <br /> Station Average Annual Average Peak <br />Waterbody Location Number Period of Record Flow (cfs) Flow (cfs) <br />Saint Charles Vineland 07108900 1979-2000 38 3538 <br />River <br /> Moffat Street, 07099970 1988-2000 686 5126 <br />Arkansas River Pueblo <br /> Avondale 07109500 1976-2000 985 7217 <br />TABLE 2 <br />SURFACE WATER QUALITY DATA FROM AREA GAGING STATIONS <br /> Total <br />Specific Ammonia <br /> <br />Period Dissolved <br />Conductance Nitrite+Nitrate nitrogen Fecal <br />Waterbody Location Station of Solids (pS/cm at 25 NOz-NOa NHa-N coliform <br /> Number Record (TDS) degrees C) dissolved dissolved (col./ <br /> (mg/L as N) (mg/L as 100 mL) <br /> m /L N <br /> 1971 a 1'70(°ne <br />Charles Vineland 07108900 <br />2000 (on 1868 <br />sample) NA NA <br />River sam le <br /> Moffat 1988 <br />Arkansas Street, 07099970 2000 381 605 0.534 0.039 69 <br />Ri Pueblo <br />ver Avondale 07109500 1976- <br />2000 550 773 1.64 0.095 2459 <br />Applicable WQ Standard for Saint Charles 500 NA 10.05 0.06 2000 <br />River CDPHE 2002/EPA 2002a chronic <br />Applicable WQ Standard for Arkansas River 500 NA 10.5 0'1 200 <br />CDPHE 2002/EPA 2002a chronic <br />The TDS concentration measured at Vineland in 1988 exceeded the secondary drinking water <br />standard of 500 mg/L, although this value is generally not in excess of tolerance limits for most <br />agricultural crops or livestock. The nitrite and nitrate concentration was 1.70 mg/L, but only one <br />sample was taken so no water quality conclusions can be drawn from this sample. TDS and <br />specific conductance values measured at Moffat and Avondale support information discussed <br />previously, that TDS and specific conductance levels increase as the Arkansas River flows east of <br />Pueblo. NOZ-NO; values did not exceed the standard at any location reviewed. <br />Ammonia nitrogen (NH,-N) concentration was not available for the Saint Charles River and did <br />meet the standard set for the Arkansas River. Fecal coliform levels exceeded the standazd for <br />segment 7 of the Lower Arkansas River at Avondale, but were in compliance with the standard at <br />the Moffat Street gaging station. Fecal coliform levels were not sampled at the Vineland gaging <br />station. <br /> <br />8 <br />