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DRAFT February25, 1998 • river kilometers. Five of the ten sites were located on Bureau of Land Management (BLM) sites and the other five sites were located on the Ouray National Wildlife Refuge (ONWR). The objectives of the study were to determine: 1) The discharge at which each of the bottomlands flood; 2) Areas of inundation for each bottomland for different flood levels; and 3) Levee removal (natural or artificial) strategies in order to flood the bottomlands at a more historical frequency and magnitude. The BLM sites are characterized by high, heavily vegetated natural levees. The BLM bottomland sites partially fill and drain on an annual basis through seepage connections as the river rises during the runoff season. Restoration alternatives have been proposed for these sites to allow flooding to occur at 13,000 ft3/s, a discharge with a return period of 1.5-years based on post-1963 hydrology. About 57 hectares of flooded bottomland habitat would be available at these sites. For the ONWR bottomland sites, more acreage is available for flooding than at the BLM sites. About 258 hectares could be flooded at 13,000 ft3/s with selective levee removal. Fish passage to these bottomlands would be available at close to assumed historic frequency and duration. • Grams, P.E., and J.C. Schmidt. 1996. Geomorphology of the Green River in the eastern Uinta Mountains, Colorado and Utah. In: Varieties of Fluvial Form, A.J. Miller (ed.). John Wiley and Sons, New York. (In press) Longitudinal profile, channel cross-section geometry, and depositional pattens of the Green River in its course through the eastern Uinta Mountains are each strongly influenced by river-level geology and tributary sediment delivery processes. We surveyed channel cross-sections at 1-km intervals, mapped surficial geology, and measured size and characteristics of bed material in order to evaluate the geomorphic organization of the 70 Ian study reach. Canyon reaches that are of high gradient and narrow channel geometry are correlated with the most resistant iithologies exposed at river level and the most frequent occurrences of tributary debris fans. Meandering reaches that are characterized by low gradient and wide channel geometry are correlated with river-level lithology that is of moderate to low resistance and very low debris fan frequency. The channel is in contact with bedrock or talus along only 42 percent of the bank length in canyon reaches and there is an alluvial fill of at least 12 m that separates the channel bed from bedrock at 3 borehole sites. Thus the influence of lithology on channel form is indirect. The influence of lithology primarily operates through the presence of resistant boulders in debris fans that are delivered by debris flow from steep tributaries Shear stress estimates indicate that bed material size and channel form and steepness are in approximate adjustment for discharges of about the 10-yr recurrence flood as determined for • unregulated streamflow. Downstream transport of gravel is limited; gravel-bar lithology 21