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<br />.-aJ <br /> <br />of special concern who's present status is unknown. As additional infor- <br />mation is gathered, these fish will be removed and placed in the appro- <br />priate category. The Virgin River roundtail chub, GiZa l'obusta seminuda, <br />is presently in this classification. The Virgin River spinedace, Lepido- <br />meda moZZispinis moZZispinis, is currently classed as protected. The <br />woundfin minnow, PZagoptel'U8 argentissimus is still classed as endangered <br />by State regulations. Fish species are listed in Appendix C. The appendix <br />also provides USDI Fish and Wildlife Service list of the proposed and <br />listed endangered and threatened species that may be present in the area. <br /> <br />Wildlife - A total of 169 species of birds have been identified <br />in the Virgin Valley Subeva1uation Unit. This includes species classified <br />as breeding in the area, transients or winter residents as well as those <br />shown as accidental sightings. This data on birds is from a list of <br />Clark County avifauna presented by Austin and Bradley (1971) and modified <br />by information provided by Johnson (1973), Lawson (1972), Ryser (1970),11 <br />and records on file with the Nevada Department of Wildlife. <br /> <br />Migratory game birds such as mourning doves, canada geese, and ducks <br />utilize the acquatic habitat. Pheasant and quail are also found, but their <br />range and numbers are limited. The Nevada Department of Wildlife, Overton <br />Wildlife Management Area is located at the confluence of Virgin River and <br />Lake Mead. It provides protected habitat for these waterfowl and upland <br />birds. <br /> <br />The wildlife threatened and endangered species on <br />list within the program area include "Listed Species": <br />Peregrine falcon. See Appendix A, page A-17. <br /> <br />the federal (USFWS) <br />Bald eagle and <br /> <br />A liat of ninety-three species of mammals (12 nonconfirmed and 2 <br />feral) found in the study unit was compiled from information presented <br />by Deming (1963), RaIl (1946), Ryser (N.D.), and records of the Nevada <br />Department of Wildlife. <br /> <br />In addition to fish and birds, the USFWS list of wildlife, ,threat- <br />ened and endangered species are "Proposed Species": Muddy Valley urban <br />snail, Pahranagat Valley turban snail, White River snail and desert tor- <br />toise. "Candidate Species" include the Virgin Valley frog, Gila monster, <br />desert tortoise and spotted bat. See Appendix A, page A-17. <br /> <br />Vegetation - Vegetation on irrigated agricultural land consists <br />primarily of legumes, grasses and small grains. The estimated impact <br />area is within the confinea of the valley'bottom. Range conditions <br />improve very slowly in this arid climate. Future conditions of the <br />rangeland resources would be unaffected by any of the proposed alternatives. <br /> <br />Vegetation on wildlife land that has been classified as wetland <br />according to Wetlands of the U.S. Fiah and Wildlife Service Circular <br />39 are: sa1tcedar (tamt:a'i:& pentandl'aJ, big saltbush (At!'ipZe:r ZentifomsJ, <br /> <br />11 See bibliography of references cited on page C-6. <br /> <br />23 <br /> <br />, \ - f' "10 <br />" .. t\ <br />