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<br />002;)~5 <br /> <br />Duncan Draper - Asked about the cost and longevity of fish screens. Who pays initial and <br />replacement costs? Where will screens be required and how many? <br />Roehmrrenney - Estimated cost for a screen at Elkhead -$1 M, longevity uncertain. This is new <br />technology; net is same material as used in climbing ropes-high resistance to abrasion, UV. <br />Recovery Program is committed to install screen at Elkhead, if necessary. <br />Tenney/Martinez - Screens would be needed wherever wannwater gamefish are to be stocked, if <br />escapement to the river is likely. Small ponds could be isolated and have screened outlets. Elkhead <br />is a high priority of CD OW for warm water fish, but CDOW currently is not stocking warmwater fish <br />because of an agreement among CO, WY, UT and USFWS. <br /> <br />Chace - Number of angler days in Yampa Basin don 'tjustifY the expense ofa screen; we don't need <br />to perpetuate warmwater fisheries where they don't belong. <br />Draper - Putting northem pike into ponds near the river isn't effective, because anglers put them <br />back in the river. Do pike reproduce in the river? <br />Roehm - Yes. <br /> <br />Libbie Miller (CD OW) - Need to work with counties to prevent expansion of nonnative habitat/ <br />reproduction into gravel pits, etc. <br />Roehm - That's worth considering. Some thought has been given to creating nonnative "traps" from <br />features such as gravel pits and natural sloughs and backwaters. Fish like northern pike could enter, <br />but not exit easily. They would be available for anglers to harvest from these sites. <br /> <br />Kevin Rogers (CDOW) - Northem pike are a concem not only for endangered fish, but cold water <br />gamefish, as well. CDOW has not given up on stocking trout in Stagecoach, trying different <br />strategies (e.g., stocking larger fish to reduce pike predation). <br />Unidentified - Can a lake like Stagecoach be poisoned with rotenone? <br />Rogers - Yes, but pike are a popular fish and probably would be replaced after poisoning. <br /> <br />Krautkramer - Little said of habitat modification. What about tamarisk control? Tamarisk has a <br />great impact on channel margin. <br />Roehm - Some believe hydrologic modifications (loss of peak flows) has allowed tamarisk to <br />become established, although it can tolerate a certain amount of flooding. It's not as big a problem <br />(yet) in the Yarnpa as it is elsewhere. DNM may have a tamarisk control program in place. <br />Tamarisk control complicated by the fact that it has displaced traditional wi llow habitat of the S W <br />willow flycatcher (endangered bird), and replacement habitat (willows) need to be established before <br />tamarisk is eradicated. <br /> <br />Draper - Peak flows also create habitat for pike. <br />Rogers - Pike do occupy same flooded bottomland habitat as listed fish. <br />Roehm - High flows that enable pike spawning is upperreaches (Hayden area) may flush adult pike <br />from lower canyon-bound reaches. Pike unsuited for high velocity flows. <br />Draper - Can pike ever be eradicated from the river. <br />Roehm - No. But recent studies suggest that pike numbers can be reduced. Last year, about half <br />as many pike were captured as during the previous year, but with twice the effort. At the same time, <br />the number of Colorado pikeminnow increased. This is an encouraging trend. <br />Ron DellaCroce (CDPOR) - If EIkhead is enlarged, during the drawdown jet skis and other <br />watercraft could wind up in the river. <br /> <br />~ <br /> <br />Appendix E - Summary of Public Scoping Meetings <br /> <br />E-3 <br />