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USGS stream gage for CaL~on Creek above New Castle, CO (109085200), which has a <br />drainage area of 23.8 square miles (See Gage Summary in Appendix C). The total drainage area <br />of the Canyon Creek Drainage upstream of the Baxter Ditch is approximately 18.7 square miles. <br />The period of record for this gage was 1969 to 1986, the period of record used by staff in their <br />analysis was 1969 to 1986, or 17 years of record. Table 2 below displays the flow of Canyon <br />Creek upstream of the Baxter Ditch #1 (Table 2), in terms of a percentage of exceedence. <br />Table 2: Canyon Creek estimated Flow upstream of Baxter Di[ch. <br />cayen ck uz o1 Da.kr Ducn <br />Ezceetlences Janua PoErua March ril Ma Jane Jc Au uat 3• tambr OaoEer NovamLer Dewmbar <br />1% <br />5% <br />10% <br />20% <br />50% <br />eD% <br />99% <br />95% <br />99% <br />16.16 14.14 1984 10]33 39804 5)656 395.65 40.0] 30.84 6385 22]1 1).29 <br />1338 12.5) 16.50 50.93 322.22 64I 86 1654) 29.86 2063 33.OJ 20.63 15]f <br />125] 11.]9 14.9] 44.)9 26308 368.14 104.03 25.14 10.86 24.8] 18.86 td.9] <br />12.5] 11.)9 12.to 29.86 20821 315.0) 9.]3 2121 1850 21.21 1)29 14.14 <br />9A3 B63 1021 15.)1 92.]1 190]9 33)9 15]1 129 14.93 13.36 11.00 <br />).86 ].06 8.64 1100 5029 92.]1 22.00 1t W 1021 1021 943 8.64 <br />).46 ]46 )88 1021 3143 5]63 1fi50 064 9<3 864 8.64 ].86 <br />].31 ].15 ].06 963 1886 3693 13.J6 6.05 fi.13 >.66 052 ]23 <br />6.60 fi32 ].i) 854 15)1 ifi.50 ).56 4.60 569 848 8.13 695 <br />Canyon Creek Estimated Stream Flow <br />u/s of the Baxter Ditch <br />30 <br />25 _____ <br />20 <br />15 _ <br />10 - - - - - - - - - - - - <br />5 <br />0 <br />JAN FEB MAR APR MAY JUN JUL AUG 5~ OGT NOJ DEC <br />Month <br />Table 2 above shows that the summer recommendation of 24.1 cfs is available May 15 through <br />July 14`h. The winter flow recommendation of 13.5 cfs is available July 15`h -August 14`h and <br />April 15`h -May 14`h. The winter flow recommendation was further reduced to 9.4 cfs for the <br />time period of August 15`h through April 14`h based on limited water availability. <br />Precipitation Data <br />Staff reviewed local precipitation data sets from 2 different sites located around the Canyon <br />Creek Drainage (see Precipitation Data in Appendix C). These sites include Rifle and Glenwood <br />Springs. Table 3 shows the water year and the percent of average precipitation recorded at each <br />site. <br />-4- <br />