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Table 4: Sulfate Concentrations within the Yampa River Basin Presently and Historically <br />ocat~on Aerator m mum ow o ecor aximum ow o ecor <br />Site No. Discharge SOq Date Discharge SOq Date Discharge SOq <br />(cfs) (ma/1) (cfsl (mq/1) (cfs) <br />Foidel Creek CYCC/14 1.38 272.5 <br />upstream of 101-531 <br />disturbance <br />Middle Creek CYCC/29 11.1 425 <br />downstream 4.2-20 147- <br />disturbance 932 <br />Fish Creek CYCC/1001 25.6 172 <br />upstream of 7-100 45- <br />disturbance 730 <br />Fish Creek CYCC/1003 77 309 <br />downstream of 8-272 BO- <br />disturbance 613 <br />Trout Creek CYCC/69 NA NA <br />downstream of <br />Foidel Creek <br />Yampa River USGS 1933 NA <br />at Steamboat 09244410 230-12500 <br />Yampa River USGS 3025 NA <br />at Maybell 09251000 <br />** Worst Flow of Available Institutional Records <br />+ 1985 Data Presented in the Following Format <br />Average <br />Minimum-Maximum <br />9/23/85 4.2 300 3/19/85 20.0 515 <br />8/14/84 X5.45 150 5/20/85 100 313 • <br />8/28/85 8 279 6/25/84 1300 272 <br />3/4/81 7.0 134 6/13/83 257 56 <br />8/17/77 38 33 4/27/74 16500 NA <br />7/17/77 22 200 5/17/84 25100 57 • <br />35a <br />