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Fishes of the Upper Colorado River Basin, U.S. Fish and Wildlife Service, Region 6, Denver, CO. 73 pp + appendices. Valdez, R.A. 1990. The endangered fish of Cataract Canyon. Final Report prepared for the United States Department ofInterior, Bureau of Reclamation, Salt Lake City, Utah. Contract No. 6- CS-40- 03980, Fisheries Biology and Rafting. BIOIWEST Report No. 134-3. 94 pp. + appendices. Valdez, R.A. and B.R. Cowdell. 1994. Lake Powell Inflow Study. Annual Summary Report - 1993. Prepared for Utah Division of Wildlife Resources, Salt Lake City, Utah. Contract No. 90- 2558. BIOIWEST Report.No. 384-1. 15 pp + appendices. Valdez, R.A. and B.R. Cowdell. 1995. Lake Powell Inflow Study. Annual Summary Report - 1994. Prepared for Utah Division of Wildlife Resources, Salt Lake City, Utah. Contract No. 90- 2558. BIO/WEST Report No. 384-2.16 pp + appendices. Valdez, R.A. and B.R. Cowdell. 1999. Effects of flow regulation and ice processes on overwinter nursery habitat of age-O Colorado pikeminnow in the Green River below Flaming Gorge Dam. Final Report, Recovery Implementation Program, Five Year Flaming Gorge Research Program Project No. FG-lO. Valdez, R.A. and R.D. Williams. 1993. Ichthyofauna of the Colorado and Green Rivers in Canyonlands National Park, Utah. Pages 22 in P.G. Rowlands, C. van Riper II, and M.K. Sogge (eds.). Proceedings ofthe First Biennial Conference on Research in Colorado Plateau National Parks. Transactions and Proceedings Series NPS/NRNAU/NRTP-93/1 O. National Park Service Cooperative Park Studies Unit, Flagstaff, Arizona. V,micek, C.D. and R.H Kramer. 1969. Life history of the Colorado squawfish, Ptychocheilus lucius, and the Colorado chub, Gila robusta, in the Green River in Dinosaur National Monument, 1964-1966. Transactions .ofthe American Fisheries Society 98 (2): 193-208. 23