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<br />-~-~-~----------~-- <br /> <br />Figure 9. Comparison of estimated numbers of Colorado pikeminnow per mile in Upper Basin rivers based on population <br />estimates from 1991-1997. Population estimates were calculated using an 86% survival rate. <br /> <br />25 <br />20 <br />15 <br />10 <br />5 <br />o <br /> <br />CPM/River mile <br /> <br /> ~" " <br /> - <br /> - <br /> ~ <br /> - <br /> . - ".'. <br /> ~ <br /> - <br /> .- <br /> .- <br /> ..- <br />..-- - - <br /> ~ - ~ ~ <br />~ <br />I I I I I I . <br /> <br />1991 <br /> <br />1993 <br /> <br />1994 <br /> <br />1995 <br /> <br />1996 <br /> <br />1992 <br /> <br />1997 <br /> <br />86010 survival rate <br /> <br />. Colo-Gunn III Yampa-LS A White )( Green I <br /> <br />21 <br />