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<br />Table 4.--Identification of stream, reservoir, and ground-water sites <br />sampled in the study area <br /> <br />[--, no station number] <br /> <br />Si te number <br />(fig. 7) <br /> <br />Site name <br /> <br />u.S. Geological Survey <br />station number <br /> <br />STREAM SITES <br /> <br />Al <br />T1 <br />T2 <br />A2 <br />A3 <br /> <br />A4 <br /> <br />A5 <br />A6 <br />A7 <br /> <br />Rl <br />R2 <br />R3 <br /> <br />R4 <br />R5 <br /> <br />Gl <br />G2 <br />G3' <br />G4 <br />G5 <br /> <br />Arkansas River above Pueblo, Colo. <br />Fountain Creek at Pueblo, Colo. <br />St. Charles River at Vineland, Colo. <br />Arkansas River near Nepesta, Colo. <br />Arkansas River at La Junta, Colo. <br /> <br />07099400 <br />07106500 <br />07108900 <br />07117000 <br />07123000 <br /> <br />Arkansas River below John Martin <br />Reservoir, Colo. <br />Arkansas River at Lamar, Colo. <br />Arkansas River near Coolidge, Kans. <br />Arkansas River near Deerfield, Kans. <br /> <br />07130500 <br />07133000 <br />07137500 <br />375833101064200 <br /> <br />RESERVOIR SITES <br /> <br />Pueblo Reservoir near Pueblo, Colo. <br />Lake Meredith near Ordway, Colo. <br />Great Plains Reservoirs near Eads, Colo. <br />Neesopah Reservoir <br />Neegronda Reservoir <br />Neenoshe Reservoir <br />John Martin Reservoir at Caddoa, Colo. <br />Lake McKinney near Lakin, Kans. <br /> <br />381754104450400 <br />381140103413100 <br /> <br />381815102450000 <br />382000102420000 <br />380452103031001 <br />375900101120000 <br /> <br />GROUND-WATER SITES <br /> <br />La Junta, Colo. <br />Las Animas, Colo. <br />Syracuse, Kans. <br />Lakin, Kans. <br />Deerfield, Kans. <br /> <br />380014103332000 <br />380347103135800 <br />375719101453001 <br />375814101153701 <br />379002101081901 <br /> <br />The stream sampling site upstream from Pueblo (site AI) and the site near <br />Deerfield (site A7) were selected to represent inflow and outflow from the <br />study area. The site near Coolidge (site A6) is the NASQAN station for which <br />high concentrations of selenium have been reported in the past (1975-87). The <br />site downstream from John Martin Reservoir was selected because the reservoir <br />completely regulates streamflow in the Arkansas River. The remaining Arkansas <br />River sites (sites A2, A3, and A5) are at existing streamflow-gaging stations <br />and were selected to provide adequate representation of the river. The two <br />tributary sites (sites TI and T2) represent inflow from areas of known <br />selenium loading. <br /> <br />24 <br />