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<br />Table 2: Estimated Fourmile Creek Flow downstream of High Creek
<br />
<br /> Januarv Februarv March Anril Mav June Tulv AUfJust Sentember October November December
<br />1% "1.21 14.10 12.07 59.24 311.48 160.99 90.35 67.56 4)96 71.77 71.90 20.71
<br />5% 16.28 12.66 9.95 54.26 176.63 138,38 77.78 41.60 31.65 26.23 23.97 17.18
<br />10% D.S? 10,76 9,04 4.2.51 141.09 112.15 71.90 35,72 24.42 ')4.42 16.28 15.38
<br />20% 9,95 7,87 8.59 22.61 103.10 8773 41.60 28.04 ')1.71 18,99 15.38 9,95
<br />50% 5,88 5.43 7.19 13.57 28.49 43.41 15.38 13.57 12.66 13.57 7,78 5,88
<br />80% 4,61 3.71 5.25 8,86 12.66 ]4.47 10.85 9,04 8.23 8.23 6,60 4.97
<br />90% 407 3.53 4.43 8,05 8,18 841 8.82 439 4.52 6.10 5,97 4.61
<br />95% 3.62 3.35 4.22 746 6,00 7,05 6.92 3.7t 407 4,95 5.43 4.25
<br />99% 3.17 2.89 3.85 6.24 4,76 64') 5.11 2.54 3.75 3.85 4.97 ;\...\.2
<br />
<br />Table 3: Estimated Fourmile Creek Flow upstream of Cripple Creek
<br />
<br />(ccedene Tanuarv Februar March Anril \-Iav lune fulv AUlJ'ust Sentemher October Nowmber December
<br />1% 22.16 14.73 12.61 61.89 325Al 168.18 94.39 70.58 44,88 74,97 75.12 21.64
<br />5% 17.01 13.2:\ 1039 56.69 ]84.53 144.56 81.26 .B.46 3.~.07 17.40 25,04 17,95
<br />10% 14.17 11.24 9.45 44AI I.PAO 117.16 75.]2 37.32 25.5] 25.51 17.01 16.06
<br />20'70 10.39 8.')2 8.98 23.62 107,71 91.65 43.46 29.29 22.68 19,84 16,06 10.39
<br />50% 6.14 5,67 7.51 14.17 '9.76 45.J5 16,06 14.17 13.D 14.\7 8,13 6.14
<br />"0% 4,R2 U7 5.4' 9.~6 1l.ll 15.\2 \1.14 9.45 ',60 R,60 A,on 5.20
<br />90% 4.25 3,68 4,63 8.41 8.55 8,79 9.21 4,58 4.72 63" 6.')4 4.R2
<br />95% :U8 3.50 4.4\ 7,80 6.26 7:J7 7.23 ),87 4.25 5.\7 5,67 4,44
<br />99% :'1..1\ 3.02 4.m 6.52 4.97 6,71 5.34 2.66 3.92 -+.03 ).20 3.57
<br />
<br />Tables 2 and 3 show that the winter recommendation of 4,1 cfs (October l5'h - April 14'h) is
<br />available at least 80% of the time throughout the entire reach, except for the month of February
<br />where it is only available 50% of the time, Tables 2 and 3 also show that the summer !low
<br />recommendation of 8,2 cfs (April 15'h - October 14'h) is available at least 80% of the time
<br />throughout the entire reach,
<br />
<br />Precioitation Data
<br />
<br />Staff reviewed local precipitation data sets from 4 different sites located around the Fourmile
<br />Creek Drainage (see Precipitation Data in Appendix C), These sites include Guffy (1951-1997),
<br />Canon City (1931-1997), Lake George (1948-97) and Ruxton Park, (1959-1997) (See Figure 3),
<br />Table 4 shows the water year and the percent of average precipitation recorded at each site,
<br />
<br />T bl 4 P
<br />
<br />D
<br />
<br />fA
<br />
<br />a e reclOltatlon ata as a oercentaae 0 verage,
<br /> Water Year Guffv Canon Citv Lake George Ruxton Park
<br /> 1992-93 86% 94% 70% 88%
<br /> 1993-94 148% No Data 100% 129%
<br /> 1994-95 139% No Data 114% 133%
<br /> 1995-96 108% 115% 74% 95%
<br /> 1996-97 103% 165% 74% 169%
<br />
<br />Table 4 shows the wide vanatlon of precipitation between four relatively close preCipItation
<br />sites, the 1992-93 water-year was below average at all four sites, the 1994-95 water-year was
<br />above average for three sites and the 1995-96 water-year was above average for two sites and
<br />below average for two sites, It is staffs opinion that the five years of stream-flow data analyzed
<br />is representative of average to slightly above average water-years, However, because the
<br />requested flow amounts were exceeded at least 80% of the time, no adjustment to the
<br />recommended in stream flow amounts was made, Figure 4 below shows the Fourmile Creek
<br />stream flow for the 1992-1997 time period,
<br />
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