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<br /> <br />IN .EI"LY UFE. TO: <br />N1621 (GRCA-8213) <br /> <br />United States Department of the Interior <br /> <br />RECEIVED <br />JUL 10 1998 <br /> <br />NATIONAL PARK SERVICE <br />GRAND CANYON NATIONAL PARK <br />P.O. BOX 129 <br />GRAND CANYON, ARIZONA 86023~129 <br /> <br />Colorado Water <br />Consarvation Board <br /> <br />JUL 0 6 1998 <br /> <br />Dear Constituent: <br /> <br />Grand Canyon National Park, in conjunction with the State of <br />Arizona Game and Fish Department and the U.S. Fish and wildlife <br />Service, are considering introducing the Kanab Ambersnail <br />(Oxyloma haydeni kanabensis) into three springs within the <br />confines of the park. <br /> <br />This species of endangered snail has been located at only two <br />locations. One population is located near the town of <br />Colorado City, Arizona, on private land (Three Lakes) and is <br />threatened by nearby land development. The other population <br />exists at Vasey's Paradise on the Colorado River within <br />Grand Canyon National Park. Total occupied habitat for this <br />species is less than one acre. <br /> <br />Establish of additional populations of the snails in other areas <br />will ensure that, if disease or a catastrophic event such as a <br />flash flood or spring failure occurs, this species would not be <br />lost. Suitable sites have been assessed for this reintroduction. <br />These sites are located at River Mile 47.1, river right (referred <br />to as "Keyhole Spring"), River Mile 116.6, river left (Upper <br />Elves Chasm), and River Mile 136.1, river right (Lower Deer Creek <br />Spring.) These three sites provide optimum biological and <br />environmental conditions for the snails, and are located away <br />from high visitor use areas. <br /> <br />Enclosed are site location maps for each of the three springs, <br />and a Draft Environmental Assessment describing the project. If <br />you have comments or concerns regarding this proposed action, <br />please contact Wildlife Biologist R.V. Ward at 520-638-7756, or <br />Cultural Resource Program Manager Janet Balsam at 520-638-7758 by <br />Wednesday August 5, 1998. <br /> <br />Sincerely, <br /> <br />, 0' 'Z. <br />W~AJ.l rvo~ . <br />'.D{~ r;:A r' <br />. f'>' Z <br />""~ . <br />F..",.,..e ""cPt- <br />r-o..::>S.I ' <br />f4..Nlf.,-",cke~ <br /> <br />~~ dO--~ <br /> <br />Robert L. Arnberger <br />Superintendent <br /> <br />Enclosure <br />