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<br />r:-....! <br /> <br />believed this inflection point represents areference flow in regard to severe degradation of <br /> <br />fishery habitats. In four of the 15 years, 1985 to 1999, minimum flows were below 93 cfs in <br /> <br />August. During September minimum flows were below 93 cfs in 6 years at the Mayben gage <br /> <br />~ <br />~ ',-:1 <br />t J <br /> <br />and five years upstream of the Mayben canal. In September the minimum flow at Maybell <br /> <br />averaged 38 cfs less than the combined flow of Craig and William Fork gages. <br /> <br />r:-m, <br />! 1 <br /> <br />LJ <br /> <br />1_____ M inirn urn -<>-1 Q-d low flow I <br /> <br />n <br />u <br /> <br />J!! <br />CJ <br /> <br />500 <br />450 <br />400 <br />350 <br />300 <br />250 <br />200 <br />150 <br />100 <br />50 <br />o <br />1980 <br /> <br /> <br />Median - minimum = 128 <br />Median - 1 O-d low = 153 <br /> <br />n <br />tl <br /> <br />t , <br />I ' <br />'i ,; <br />LJ <br /> <br />1982 19841986 1988 1990 1992 1994 1996 1998 <br />Year <br /> <br />~..-~........ <br />g <br /> <br />Figure 3. Minimum flow and the 10-day low flow for the last 20 years recorded at the <br />Mayben gage,.Yampa River, with a dashed.line to indicate the 84-year median for <br />the minimum (128 cfs) and a solid line for the lO-day low flow (I 53 cfs). <br /> <br />~ - - ~ <br /> <br />L j <br /> <br />1'1 <br />i.;;...~c.....j..l.. <br />Li <br /> <br />r.~ <br />[1 <br />tJ <br /> <br />,. -, <br />~' _-:,1 <br /> <br />:; ~ <br />I -] <br />[j <br /> <br />11 <br />h:"i <br />[.j <br /> <br />7 <br />