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<br /> <br />• <br />streamflow through this reach is largely subterranean at a depth sufficient to allow upland plants to <br />become dominant at the surface. <br />Finally, below this complex reach for a distance of 3.5 miles (until Co. Rd. 32 is encountered), the <br />stream system exhibits expanded streamside wetlands. The flood channel forms a "U" or deep "U" shape <br />that exhibits incision from 2 to 30 feet with one section of almost 2 miles where the incision averages 20 <br />to 30 feet. The wetland width ranges from 6 to 25 feet but averages 12 to 15 feet. Dominant vegetation <br />along this "recorded" checkpoint reach of )ubb Creek included: Carex aquati/is, Cirsium arvense, Juncus <br />baiticus, and Agrostis aiba, as well as several additional sub-dominant taxa. <br />The entire length of Wilson Creek through the study area exhibits a wide "expanded" streamside <br />wetland. The depth of incision ranges from 15 to 35 feet throughout the majority of this stream reach, <br />except for a point immediately above a road crossing that is just above the cultivated fields where the <br />channel exhibits a normal shape with a depth of from 3 to 5 feet. The cross-sectional shape of the <br />channel through this reach is a deep "U". Dominant vegetation along this "recorded" checkpoint reach of <br />Wilson Creek included: Typha iatifoiia, Carex aquatiiis, Cirsium arvense, Agrostis aiba, and Scirpus <br />pungens, as well as several additional sub-dominant taxa. <br />3.7.5 Disturbed Areas <br />Approximately 26.2 acres of the study area was classified as disturbed areas (see Map V1). This <br />category encompasses small barren areas, homesteads, ranch buildings and yards, and two-lane or <br />larger roads. Little to no vegetation exists in these areas. This category also includes mining-related <br />disturbances associated with the active Colowyo Mine located outside the study area, but within the <br />wildlife study area. Mining-related disturbances include shops, offices, load-outs, pits, waste rock dumps, <br />parking lots, railroad tracks, and revegetated areas. <br />CEDAR CR22 S AMO CHAUMS, INC. <br />Page 43 <br />2005 Collom Vegetation Survey