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UPDATED NATURAL RESOURCES INVENTORY FOR <br />SOUTH OF DIVIDE STUDY AREA <br />• The only major water body in the study area is Minnesota Reservoir, which is located in the <br />northwest corner of the area on Dry Fork. The reservoir receives runoff from the Dry Fork <br />drainage basin as well as irrigation water imported via Deep Creek Ditch. <br />n <br />2.1 Wetlands and Riparian Areas <br />Riparian and wetland vegetation occurs along major drainageways and at stock ponds, seeps, and <br />springs. Wetlands are azeas that have positive indicators of wetland vegetation, wetland soils, and <br />a wetland water supply. All three parameters must be met for a wetland to be considered <br />wetland. The criteria and methods used to delineate wetlands aze contained in the Corps of <br />Engineers Wetland Delineation Manual (Manual) (U.S. Department of the Army, 1987). A <br />determination of whether a species is a wetland plant is based on ratings in the List of Plant <br />Species That Occur in Wetlands: Intermountain (Region XIZI) (U.S. Fish and Wildlife Service, <br />1988). Plants rated as "facultative," "facultative wetland," and "obligate" are considered to be <br />wetland species. Common wetland species in the South of Divide area are listed in Table 1. <br />TABLE 1 <br />Common Wetland Species That Occur in South of Divide Area' <br />• <br />Stratus Common Name Scientific Name Wetland Rating <br />Trees Narrowleaf cottonwood Populus angustifolia FACW <br /> Blue spruce PK:ea pungens FAC <br /> Box elder Acer negundo FACW <br />Shrubs Willows Sala spp. FACW-OBL <br /> Hawthorn Crataegus erythropoda FAC <br /> Redtwig dogwood Suida sericea FACW <br /> Mountain maple Acerglabrum FAC <br /> Alder Alnus tenuifolia FACW <br />Grasses/grass-like Red top Agrostis alba FACW <br />plants Tufted hair grass Deschampsia caespitosa FACW <br /> Foxtail barley Hordeum jubatum FACW <br /> Spike rush Eleocharis spp. OBL <br /> Bluejoint reed grass Calamagrostis canadensis OBL <br /> Sedges Carex spp. FAC-OBL <br /> Rushes Juncus spp. FAC-OBL <br /> Bulrushes Scirpus spp. OBL <br /> Broadleaf cattail T ha latrfolia OBL <br />Forbs Cow parsnip Heracleum lanatum FAC <br /> Nettles URica dioica FAC <br /> Bitterness Cardamine corddolia FACW + <br />831-032.690 Wright Water Engineers, Inc. Page 3 <br />March 2006 <br />