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Table 2 above shows that the summer recommendation of 12.4 cfs is available for the months of April I st through July 14th only. The winter flow recommendation was further reduced to 4.3 cfs for the time period of July 15th through March 31 st based on limited water availability, Precipitation Data Staff reviewed local precipitation data sets from 2 different sites located around the Canyon Creek Drainage (see Precipitation Data in Appendix C). These sites include Rifle and Glenwood Springs. Table 3 shows the water year and the percent of average precipitation recorded at each site. Table 3: Precipitation Data as a percentage of Average. Glenwood Springs Aspen Year % Average % Averaae 1950 52% 76% 1951 138% 124% 1952 120% 86% 1953 102% 81% 1954 103% 79% 1955 77% 76% 1956 77% 71% 1957 137% 114% 1958 66% 64% 1959 111% 120% 1960 74% 106% 1964 94% 129% 1965 87% 127% 1966 51% 94% 1967 71% 98% 1968 76% 105% Average 90% 97% Table 3 shows a slight variation of precipitation between the two precipitation sites. It is staffs opinion that the 14 years of stream-flow data analyzed is representative of slightly below average water-years. Existing Water Right Information Staff has analyzed the water rights tabulation and consulted with the Division Engineer Office to identify any potential water availability problems. There are several decreed surface diversions within this reach of stream, however based on the stream gage located just upstream of the Northside Ditch water is available. Based on this analysis staff has determined that water is available for appropriation on Thompson Creek, from North & South Thompson Creeks to the Northside Thompson Ditch Headgate, to preserve the natural environment to a reasonable degree without limiting or foreclosing the exercise of valid existing water rights. - 5 -