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<br />-t>- Peak annaul flow <br /> <br />25000 <br /> <br />../\............ <br /><0 If> <br />./ " <br /> <br /> <br />Median = 10,000 cfs <br /> <br />20000 <br /> <br />15000 <br /> <br />mmm $/\mu. <br />0;/ \ <br /> <br />J!! <br />u <br /> <br />18 <br /> <br />1000 <br /> <br />\ ........*\Q <br />..... ...... o;/m.. .....u <br /> <br /> <br />$ <br /> <br />5000 <br /> <br />o <br />1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 <br /> <br />Year <br /> <br />Figure 2. Peak annual flow recorded at the Maybell gage, Yampa River for the last 20- year <br />period. Median flow for the 84-year period of Record is 10,000 cfs. <br /> <br />years 1985 to 1999. During the spring runoff season (March through June) flows <br /> <br />representing both areas were very similar (Figure AI.I) and flow at the Maybell gage <br /> <br />averaged 2% higher than the two combined upstream gages. During the summer months (July <br /> <br />to October) flows at Maybell averaged 6.2% less than the two upstream gages (Figure AI.2). <br /> <br />Mean flows were again higher at Maybell during the winter (November, December, January <br /> <br />and February) by an average of7.4%. <br /> <br />Tables AU and A1.2 show the difference in mean monthly and minimum flows for <br /> <br />the Maybell gage and for upstream of the Maybell canal in August and September. Anderson <br /> <br />(1997) identified an average inflection point occurred at 93 cfs in the relationship between <br /> <br />channel width and flow in 30 riffle cross sections in this part of the Yampa River. He <br /> <br />6 <br /> <br />I <br />I <br />I <br />'I <br />I <br />I <br />I <br />,I <br />,I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />, <br /> <br />'I <br />I <br />I <br />,I <br />