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<br />8) Recommended Final Storm List and Associated Data Resources <br /> <br />The cuhnination of the Extreme Precipitation Data Study was the selection of a subset of <br />extreme storms that represent the heaviest rains that have been documented in Colorado in <br />the various regions of the state during the period of instrumental record. A recommended <br />set of storms was presented at an all-day meeting of the Extreme Precipitation Committee <br />convened by the State Engineer's Office on October 24, 1996. Based on <br />recommendations of the committee, a few minor changes were made to the proposed list <br />with the final results appearing in Table 5. Approximately 10 percent of all storms on the <br />overall storm list were included in this final set. Note that the majority of storms on this <br />list have occurred since 1950. For storms with relatively similar rainfall amounts and peak <br />flows, more recent storms were selected due to greater availability of supporting <br />meteorological data (radar, satellite, soundings, surface observations, etc.) that could be <br />essential for numerical modeling applications. <br /> <br />Table 5. Recommended final list of storms for consideration in investigating extreme <br />rainfall potential in the Rocky Mountain region of Colorado. Locations of climatic regions <br />are shown on Figure 2, page 7. <br />No. Storm Name Date Maximum Precipitation Climatic <br />Region <br />15 Western Colorado Oct. 10-15, 1899 5" widespread 6 <br />23 Livermore! Boxelder May 20-21, 1904 8" 2 <br />40 San Juans! Gladstone Oct. 4-6, 1911 4-8" 3 <br />61 Penrose! Pueblo Jun. 2-6, 1921 6-12" 2 <br />63 Steamboat Springs Jun. 14, 1921 3" 4 and 6 <br />76 Mesa Verde Aug. 3, 1924 3.5"/45 minutes 3 and 5 <br />74 Savageton, WY Sep. 27-29, 1923 17" in two days 1 and 2 <br />79 Palisade Lake Jun. 26-29, 1927 4-7" 3 <br />99 Cherry Creek! Hale May 30-31,1935 12-24" local centers 1 and 2 <br />113 Front Range Sep. 2-3, 1938 6-10" 2 <br />114 Masonville Sep. 10, 1938 5-7" in 1 hr. 2 <br />135 Lake George Jul. 31, 1945 3.45"/1 hr. elev. 8,500 ft. 2 <br />157 Western Colorado Dec. 29-31. 1951 9" snow water equivalent 3,4,5,6 <br />164 Rye May 18-20, 1955 6-13" 2 <br />173 San Luis Aug. 12, 1957 2.9"/ hr. at 8,000 ft. 3 <br />174 Gateway Aug. 21, 1957 3"/1.5 hr. 5 <br />175 Morgan, UT Aug. 16, 1958 6-8" 6 <br />181 Pyramid Sep.20-24, 1961 3-5" 4and6 <br />200 Plum Creek! Holly Jun. 16-17, 1965 14-16" 1 and 2 <br />195 Gibson Dam, Mf Jun. 6-8, 1 %4 16" 2and4 <br />215 Blanding, UT Aug. 1, 1968 4-6" 5 <br />217 Paouia Aug. 8, 1%8 4-5" 5 <br />220 Big Elk Meadows May 4-8, 1%9 6-14" 2 and 4 <br />231 SW CO/ Dove Creek Sep.4-6,1970 6" 3 and 5 <br />234 Rapid City, SD Jun. 9, 1972 15" 2 <br />237 SW CO/Durango Oct. 19-20, 1972 5" 3and5 <br /> <br />27 <br />