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<br />cfs (October 15 - April 14) and 0,75 cfs (April 15 - May 14), Table 3 below shows how often
<br />the new flow recommendations are available at the downstream terminus in orange shading,
<br />
<br />Table 3: Oil Creek at confluence with Fourmile Creek
<br />
<br />1%
<br />5%
<br />10%
<br />20%
<br />50%
<br />80%
<br />90%
<br />95%
<br />99%
<br />
<br /> Januaru Februaru March Anril Mav June Jul" Aunust September October November December
<br /> 1.21 080 0,69 3.37 ~, ~17.73 I 9.16 : 5:14 .." 3,84" 2.44" 408 4.09" 1.18 I
<br /> 0,93 0.72 0.57 3,09 10.05 1- 788 , 4,43 2.37 1,80 1.49 1,36 098 I
<br /> o,n 0.61 0,51 2.42 8.03 6.38 , 409 2,03 1.39 1.39 0,93 0,88 I
<br />1 0.57 0,45 0.49 1,29 _5,87_, 4,99 I 2,37 1,60 1.24__ 1,08 0.88 0.57 "
<br />L 0,33 0.31 0.41 o,n :i 1.62 2.47 t 0.88, o,n I 0,72 I o,n 0,44 0,33 I
<br /> 0.26 0.21 I 0,30 I 0,50 0.72 0.82 0.62 0.51 0.47 0.47 0,38 I 0.28
<br /> 023 0,20 0.25 0.46 0.47 048 050 0.25 0.26 0.35 , 034 I 0,26
<br /> 0.21 0.19 0.24 0.42 0,34 0.40 0.39 0.21 0,23 0.28 0.31 I 0.24
<br /> 0.18 0.16 022 0.36 0.27 0.37 0.29 0.14 0.21 022 0.28 0.19
<br />
<br />Precipitation Data
<br />Staff reviewed local precipitation data sets from 4 different sites located around the Oil Creek
<br />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 />Table 4: Precioitation Data as a oercenta!!e of A vera!!e,
<br />Water Year GuffY 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 vanallon 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 instream flow amounts was made, Figure 4 below shows the Fourmile Creek
<br />stream flow for the 1992-1997 time period,
<br />
<br />Figure 4:
<br />
<br />Fourni1e Creek Be1o~ Cripp1e Creek Near Victor, Co
<br />Station Nu"ber: 07096250
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<br />=
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<br />400.0
<br />350.0
<br />300.0
<br />250.0
<br />200.0
<br />150.0
<br />100.0
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<br />1993
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<br />1994
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<br />1995
<br />
<br />1996
<br />
<br />1997
<br />
<br />Legend: ------- Discharge, in CFS
<br />------- Estiftated Oischarge, in CFS
<br />
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