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Topography and Geomorphic Features <br />The 19 Road Pit site lies on the primary alluvial terrace of the Colorado River <br />approximately 300 feet to the southwest. The entire azea is relatively flat. One relict <br />topographic feature identified from aerial photography appeazs to be a relict oxbow of the <br />Colorado River located along the northern boundary of the property. <br />Hydrology <br />There are no distinctive hydrologic features within the 19 Road Pit site. Surface water <br />flows through sheet flow towazd the southwest and eventually drains to the Colorado <br />River. Groundwater below the site likely originates from the Colorado River aquifer, <br />though the extent of this feature was not observable during the site investigation. <br />Vegetation <br />Vegetation of the project site is described above and consists of a herbaceous pasture <br />community bounded by a cottonwood gallery to the north and a dense <br />cottonwood/tamarisk riparian corridor to the south and west. <br />Significant Wildlife Resources <br />Tables 1, 2, and 3 list wildlife species that potentially occur on-site according to the <br />Colorado Distribution Latilong Studies (CROW, 1981, 1990, 1998). The latilong studies <br />address vertebrates in the categories of mammals, birds, regtiles, and amphibians. <br />During the site investigation four wildlife species were encountered. A number of mule <br />deer (Odocoileus hemionus) tracks were observed throughout the site. Badger (Taxidea <br />taxes) diggings were found in the west side of the site. A northern flicker (Colaptes <br />auratus) was seen within the cottonwood gallery and a covey of Gambel's quail <br />(Callipepla gambelii) was observed along the north fenceline. <br />Seasonal Use <br />With the exception of bats, the mammal species encountered during the site inspection or <br />that potentially occur on-site are expected to be yeaz-round residents or users of the site. <br />The carnivore and ungulate species are not restricted to this site and tend to have <br />relatively large home ranges (up to several squaze miles). The majority of rodent and <br />insectivore species can be expected to reside on-site throughout the yeaz, though many <br />may hibernate during the cold months. Avian species may be year-round, temporazy <br />migrants, or summer residents of the site. Year-round residents would include the <br />waterfowl, raptor, gallinaceous birds, pigeons, owls, and woodpeckers. The majority of <br />the shorebirds and passerines would use the site during the spring, summer, and fall for <br />feeding or resting during migration. Amplu`bian and reptile species of the site are yeaz- <br />round residents. <br />.y <br />