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<br />I <br />I <br />J <br />I' <br />I <br />I <br />I <br />I, <br />, <br />I <br />I <br />I <br />I <br />I <br />I, <br />I <br />I <br />I <br />I <br /> <br /> <br />N <br /> <br />W.E <br /> <br />S <br /> <br />$" <br />t# <br />#' <br />~ <br />t: ~ <br />..., <br /> <br /> <br />--...,... <br /> <br />Vamps Canyon <br />t'if''-''-~~~o <br /> <br /> <br />Sunbelllm <br />~~ Craig <br />SEVENS 70 M8Vb~~ i. \ <br />~ Maybell \~ LittleYll'lm~8 140 <br />~ L.. ~- "'- ,.~canyon , <br />Cross r. lOCf -.:< iO'vl _' 130 <br />Mountain ~~ DUFF ~2D <br />Canyon .., ~Il-l <br />~~ <br /> <br />Figure I. Location of the two study sites on the Yampa River, the Sevens at River Mile 63 <br />and Duffy at River Mile 109.5, <br /> <br />have not been consistently above the median (which is 128 cfs) for the last five years (Figure <br /> <br />3). The minimum flow in 1999 was 168 cfs and 115 cfs in 1998, The 10-day minimum flow <br /> <br />for both 1998 (179 cfs) and 1999 (212 cfs) however has been above the median (153 cfs) <br /> <br />indicating that base flow conditions during the last two years have also been medial <br /> <br />(Figure 3). <br /> <br />Gage records for Maybell (RM 86) were compared to gage records from above the <br /> <br />Maybell diversion canal (RM 89) by combining flow from the Yampa River at Craig (RM <br /> <br />134) and the Williams Fork at its confluence with the Yampa (RM 130). Gage recording <br /> <br />began for Craig and William Fork in October 1984, so the comparison represents the last 15 <br /> <br />5 <br />