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Because inadequate numbers of young-of-year Colorado pikeminnow were captured during this <br />three year study, we recommend investigators review fall Interagency Standardized Monitoring <br />Program catch data to determine if winter sampling would be feasible before initiating future <br />winter studies . <br />Ice jams in the Ouray Backwater complex were observed which increased stage levels and <br />inundated nursery habitats. Past research indicates ice jams occur periodically, but frequency is <br />unknown. We recommend selecting backwaters in the vicinity of documented ice jam locations, <br />and monitoring magnitude and duration of stage fluctuations as result of winter flows or ice jams. <br />Ice jams may be a contributing factor affecting overwinter survival. <br />All sampling gears used under the ice were ineffective, except the underwater camera. We <br />recommend the use of an underwater camera under ice cover be further evaluated as a sampling <br />tool. <br />xxi