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<br />South Platte River, Chatfield Downstream Channel Improvement Project- Vegetation Management Plan <br /> <br />mammals, reptiles, and amphibians. Riparian ecosystems provide optimum shelter and food <br />for wildlife and function as movement corridors. Potential listed species that may find <br />suitable habitat in this site include the northern leopard frog, common garter snake, peregrine <br />falcon, bald eagle, ferruginous hawk, western yellow-billed cuckoo, and Iowa darter. <br />Hydrology - Channel in this reach is sinuous but modified and has water features, Big Dry <br />Creek and ponds at Centennial Golf Course. Soils - River alluvium consists of sand, gravel, <br />and cobble with some large boulders. Bank soils have higher organic material. <br /> <br />Map 4: Reach C) West Union Avenue - West Oxford Avenue <br />- . 1 <br /> <br /> <br />Reach C) West Union Avenue - West Oxford Avenue <br />Engineered Structures - Reach C includes a series of drop structures, ramps, culverts, and <br />bridges. Vegetation - The riparian habitat is mainly a narrow willow corridor on the banks <br />of the river. The riparian community in this highly industrialized reach has been <br />significantly reduced. Long continuous sandbars occur on both banks of the river south of <br />West Oxford Ave. The willow understory contains cattails, sedge, rush, grass, and forbs. <br />The upland habitat adjacent to the riparian fringe is planted with young deciduous trees. <br />Wildlife - The reach provides breeding habitat for birds, particularly Neo-tropical migrants. <br />It has critical habitat for fish and aquatic invertebrates, and habitat for small mammals, <br />reptiles and amphibians. Riparian ecosystems provide optimum shelter and food for wildlife <br />and function as movement corridors. Potential listed species that may find suitable habitat in <br />this site include the northern leopard frog, common garter snake, western yellow-billed <br />cuckoo, and Iowa darter. Hydrology - Some drainages and ponds. Soils - River alluvium <br />consists of sand, gravel, and cobble with some large boulders. This reach has been highly <br />modified by engineered drop structures. Bank soils are higher in organic material. <br /> <br />Page 12 <br />Final Report - April 30, 2008 <br />