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• DRAFT February 25, 1998 <br />most ideal habitat for larval razorback suckers. Restoration of this habitat requires <br />suitable flows to reconnect them with the Green River. The preferred alternative for <br />restoration in this area is floodplain restoration. <br />Cooper, D.J, and C. Severn. 1994. Wetlands of the Escalante Ranch Area, Utah: <br />Hydrology, Water Chemistry, Vegetation, Invertebrate Communities, and Restoration <br />Potential. Report prepared for the Recovery Program for, Endangered Fishes of the Upper <br />Colorado. 97p. <br />This report presents the results of original field studies, conducted during 1993, of the <br />physical, chemical and biological characteristics of selected wetlands at the Escalante <br />Ranch near Vernal, Utah. Aerial photography of this area was evaluated to determine <br />changes in hydrology and vegetation between the dates of photography. The goals of this <br />study of baseline conditions was to determine how the wetlands function and determine <br />the possibility of using these wetlands for razorback sucker habitat. <br />In general, this site has undergone tremendous changes since 1937 (the date of the earliest <br />photography). These changes allowed the current wetlands to develop. Theses wetlands <br />provide tremendous benefits to migrating sandhill cranes and waterfowl. Extreme caution <br />is advised in future consideration of modifications to the hydrologic and sediment regimes <br />at this site. <br />Daly, S.F, Tuthill, A., Hayse, J., Valdez, R., Cowdell, B., and Burton, G. 1997. Effect of <br />daily fluctuations from Flaming Gorge Dam on formation of ice covers on the Green River <br />(Draft Report dated July 1997). U.S. Army Cold Regions Research and Engineering <br />Laboratory, Hanover, New Hampshire. 28 p. <br />A detailed investigation of the ice processes on the Green River downstream of Flaming <br />Gorge Dam was conducted for this study. The overall goal of the study was to assess the <br />influence of the daily release schedule of Flaming Gorge Dam on the river ice processes. <br />Ice was observed in the Green River study reach during every winter for which direct <br />observations were available. Formation of ice cover in the Green River study reach <br />followed a consistent pattern each winter and the daily release schedule of Flaming <br />Gorge Dam, whether steady or fluctuating as a result of hydropower demand, did not <br />affect the basic outline of this pattern. The initial ice observed each winter was frazil ice, <br />transported at the water surface in the form of slush, floes, and pancake ice. A stationary <br />ice cover formed initially near the Ouray Bridge and then progressed upstream. The ice <br />cover was formed primarily by the juxtaposition of floes up to RK 464. Underturning of <br />ice floes and a rougher ice surface were more typical- upstream of this point. The <br />upstream extent of the ice cover was typically at least RK 483 and often extended <br />upstream of this point. No ice cover progression was observed upstream of Chew Bridge <br />i <br />18