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<br />I.),. "',,-,(I<.:U<"l,'1> ''"'11''.' ["" -0>1.[' ;.on .\i."."1I A I ~ 'UIlt:., -Ui,_~~IJ"" "H:IllIJt:fH""""HIU'-'[
<br />1% 26,25 18,39 16,15 68,30 ' 7'21i'" "'siriili "TilY.7O" , '" ,~I 82.30 25,70
<br /><% 20,80 16,80 11,80 62,80 198,fO 155,80 88,80 ,'48,80 '37,80' 11M"'! 29.30 21.80
<br />10% 17,80 14,70 12,80 49,80 U8,8O 126,80 82.30 42.30 29,80 29.80'~ 20,80 19,80
<br />20% 13,80 11.50 12.30 27,80 116,80 99,80 48,80 33,80 26,80 23,80 19,80 13,80
<br />50% 9.30 8,80 10,75 17,80 34,30 50,80 19,80 17,80 16,80 17,80 11,40 9.30
<br />-0% 7,90 6,90 8,60 12,60 16,80 18,80 14,80 12.80 -, 11," 11.90 10,10 ',10
<br />90% 7.30 6,70 7,70 11.70 11.85 12.10 12.55 7.65 7,80 9.55 9.40 7,90
<br />9<% 6,80 6.50 7,47 11.05 9,43 10,60 10,45. 6,90 7,30 8,27 8,80 7.50
<br />99% 6,30 6,00 7,06 9,70 8,06 9,90 8.45 5,61 6,95 7,06 8.30 6,58
<br />
<br />Table 2 shows that the winter recommendation of 4,75 cfs (October 15th - April 14th) is available
<br />at least 99% of the time at the upper end of the reach, Table 2 also shows that the summer flow
<br />recommendation of9,I cfs (April 15th - October 14th) is available at least 80% of the time at the
<br />upper end of the reach,
<br />
<br />Precipitation 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 RuxlOn 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 reclplta110n ata as a percentage 0 verage,
<br />Water Year Guffy Canon City Lake George Ruxton Park
<br />1992-93 86% 94% 70% 88%
<br />1993-94 148% No Data IOQ% 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 variation 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 staff s 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 />Four"~1e Creek Below Cripp1e Creek Near Vic~or, Co
<br />SLaL10n Nunber: 07096250
<br />
<br />'"
<br />...
<br />~
<br />
<br />400.0
<br />350.0
<br />300.0
<br />250.0
<br />200.0
<br />150.0
<br />100.0
<br />50.0
<br />0.0
<br />
<br />
<br />.s;
<br />i
<br />r.
<br />'5
<br />"
<br />,~
<br />..
<br />
<br />1993
<br />
<br />1995
<br />
<br />1997
<br />
<br />1996
<br />
<br />1994
<br />
<br />Legend: ------ Discharge, in CFS
<br />------- EsL1nated Discharge, in CFS
<br />
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