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<br />-@-Peak annaul flow <br /> <br />25000 <br /> <br />15000 <br /> <br /> <br />20000 <br /> <br />~ <br />t.) 1000 <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 Mayben gage, Yampa River Tor 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 Al.1) and flow at the Mayben 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 Al.2). <br /> <br />Mean flows were again higher at Mayben during the winter (November, December, January <br /> <br />and February) by an average of 7.4%. <br /> <br />Tables A1.l and A1.2 show the difference in mean monthly and minimum flows for <br /> <br />the Maybell gage and for upstream of the Mayben 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 />