WSPC12531 ‎(2)‎

• File Number: 8220.101.10
• Description: Colorado River Water Projects - Glen Canyon Dam-Lake Powell - Adaptive Management
• State: CO
• Basin: Colorado Mainstem
• Date: 3/1/1998
• Author: Unknown
• Title: Narrative for Biological Resources - Kanab Ambersnail - Distribution and Abundance - 03-01-98
• Water Supply Pro - Doc Type: Report/Study

0025r..3

Professional Paper 1132.

Tyus, H.M. 1987. Distribution, reproduction, and habitat use of the razorback sucker in
the Green River, Utah 1979-1986. Transactions of the American Fisheries Society
116:111-116.

Tyus, H.M. and C.A. Karp. 1989. Habitat use and streamflow needs ofrare and
endangered fishes, Yampa River, Colorado. u.s. Fish and Wildlife Service Biological
Reports 89:1-27.

Tyus, H.M. and W.L. Minckley. 1988. Migrating Mormon crickets, Anabrus simDlex
(Orthoptera: Tettigoniidae), as food for stream fishes. Great Basin Naturalist 48:24-30.

Unitt, Philip. 1987. EmDidonax traiIIii extimus: An endangered subspecies. Western
Birds 18:137-162.

U.S. Bureau of Reclamation. 1990. Graphical Detail of Historic Streamflows, Water
Releases and Reservoir Storage for Glen Canyon Dam and Lake Powell. Bureau of
Reclamation Water Management Section, Denver, CO.

U.S. Bureau of Reclamation. 1995. Operation of Glen Canyon Dam: final environmental
impact statement. U.S. Department of the Interior Bureau of Reclamation, Salt Lake City.

U.S. Bureau of Reclamation. 1998. Report of the Spike Flow Subgroup. BOR
Memorandum dated 17 January 1998.

U.S. Fish and Wildlife Service. 1983. Endangered Species Technical Bulletin 15(2).

U.S. Fish and Wildlife Service. 1984. American peregrine falcon Rocky
Mountain/Southwest population recovery plan. U.S. Fish and Wildlife Service, Denver,
CO.

U.S. Fish and Wildlife Service. 1991. Endangered and threatened wildlife and plants: the
razorback sucker (Xvrauchen texanus) determined to be an endangered species, 50 CPR
Part 17, Final Rule, October 23, 1991. Federal Register 56(205):54957-54967.

U.S. Fish and Wildlife Service. 1991a. Endangered and threatened wildlife and plants;
emergency rule to list the Kanab ambersnail as endangered. Federal Register
56(153):37668-37671.

U.S. Fish and Wildlife Service. 1991b. Endangered and threatened wildlife and plants;
proposal to list the Kanab ambersnail as endangered and designate critical habitat.
Federal Register 56(221):58020-58026.

U.S. Fish and Wildlife Service. 1992a. Endangered and threatened wildlife and plants;
final rule to list the Kanab ambersnail as endangered. Federal Register 57(75): 13657-
13661.

U.S. Fish and Wildlife Service. 1992b. 90-Day finding on petition to list the southwestern
willow flycatcher and initiation of status review. Federal Register 57:39664-39668, Sept.