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<br />Table 1, Summary of Unregulated Peak Flow Gauging Records in Colorado,* <br /> <br /> Number of stations with <br /> useable period of record <br /> equal to or greater than <br /> years indicated Longest Average <br /> Period of Perfod of <br />Maj or Ri ver Record Record <br />System 10 25 50 (yearsl (years) <br />Mi ssouri 15 4 0 34 21.2 <br />Arkansas 23 10 1 61 25.7 <br />Rio Grande 20 16 8 55 39.7 <br />Colorado 151 48 9 67 22.9 <br />State 209 78 18 67 24.7 <br />*Includes unregulated portion of records through September 30, 1973. <br /> <br />Table 2, Peak Discharges for the West Fork Dallas Creek <br />near Ridgeway, Colorado, <br /> <br /> Rain or Snowmelt Snowmelt Rain <br /> Peak Peak Peak <br />Years (cfsl (cfsl (cfsl <br />1956 42 42 33 <br />1957 187 144 187 <br />1958 90 90 33 <br />1959 73 69 73 <br />1960 78 78 36 <br />1961 46 46 41 <br />1962 60 60 50 <br />1963 40 40 31 <br />1964 92 44 92 <br />1965 200 83 200 <br />1966 90 90 39 <br />1967 41 41 19 <br />1968 88 88 51 <br />1969 126 53 126 <br />1970 132 132 129 <br /> <br />8 <br />