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TABLE 4: Electrical Coneuctf vity Concentrations within the Yampa River Basin Presently and Hf storically <br />Location Operator/ <br />Site No. 1985 <br />Oischa rge <br />(tfs) Minimum Flow of R <br />EL Date Discharge <br />(umhos /cm) (cis) ecord Maximum <br />EC Date <br />(umhos/tm) ~( Aecord <br />0l scha rge EC <br />(cis) (umhos/cm) <br />Foidel Creek CYCC/14 1,38 601 <br />upstream of <br />disturoance 190-930 <br />Middle Creek CYCC/29 11.1 888 9/23/85 4,2 950 3/19/85 20.0 850 <br />tlowstream 4.2-20 <br />disturoance <br />Fisn Creek LYLL/1001 25.6 379 8/14/84 5.45 NA 5/20/85 1.00 350 <br />upstream of 7-100 210- <br />ei sturoance 780 <br />Fish Creek CYCC/1003 77 638 8/28/85 8.00 1000 6/25/84 1300 650 <br />downstream of 8-272 320- <br />disturoance 1000 <br />Trout Creek LYLL/69 NA NA 3/4/81 7.0 270 6/13/83 257 160 <br />downstream of <br />Foidel Creek <br />Yampa River USGS 1821* 273* 7/13/77 28 NA 5/25/84 5550 NA <br />at Steamboat 09239500 108-5550 260- <br /> ~ 290 <br />Yampa River USGS 1933* 295* 7/19/77 38 340 4/27/74 16500 NA <br />near Hayden 09249410 230-12500 216- <br /> 340 <br />Yampa River USGS 3025* 561* 7/17 P7 22 1100 5/17784 25100 263 <br />at Maybell 09251000 305-24400 263- ' <br /> 827 <br />TABIE 5: Total Otssolved Solids (TDS) Concentrations within the Yampa River Basin Presently and <br />Historically (COn't) <br />No. <br />Date Discharge TDS <br />Foidel Creek LYCC/14 1.38 612 <br />upstream of 284- <br />disturbance 992 <br />Middle Creek CYCC/29 ' il.l 1159 9/23/85 <br />dwstream 4.2-20 532- <br />disturbance 2380 <br />Fish Creek CYCC/1001 25.6 355 8/14/84 <br />upstreamof 7-100 206- <br />disturDance 722 <br />Fish Creek CYCC/1003 77 639 8/28/85 <br />downstream of 8-272 235- <br />disturbance 1060 <br />Trout Creek CYCC/69 NA NA 3/4/81 <br />downstream of <br />Foidel Creek <br />Yampa River USGS 1933 NA 8/17/77 <br />at Steamboat 09244410 (230-12500) <br />Yampa Rf ver USGS 3025 NA 7/17/77 <br />at Maybell 09251000 305-24400 <br />* 1984 data <br />*' Lowest flow of available institutional reco rds <br />+ 1985 data presented on the following fo rmat <br /> Average <br /> Minimum-Maximum <br />4.2 1390 3/19/85 20:0 975 <br />5.45 515 5/20/85 100 255 <br />8.00 564 6/25/84 1300 570 <br />7.0 348 6/13/83 257 180 <br />38 193 g/27/74 16500 NA <br />22 697 5/17/84 25100 160 <br />17b <br />rt <br />