FLOOD03622

• County: Mesa
• Community: Grand Junction
• Basin: Gunnison
• Title: Grand Junction, Rainfall Depth-Duration - Frequency Curves
• Date: 3/30/2001
• Prepared For: CWCB
• Prepared By: ICON Engineering, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

TABLE 1: ORDERED PRECIPITATION DATA
Weibull
Plotting l-Hour 3-Hour 6.Hour 12-Hour 24-Hour
Position Year Rainfall Year Rainfall Year Rainfall Year Rainfall Year Rainfall
0.0189 1974 1.37 1974 1.38 1974 1.38 1974 1.38 1997 1.66
0.0377 1953 0.64 1997 1.27 1997 1.27 1997 1.27 1969 1.57
0.0566 1986 0.64 1953 1.08 1953 1.17 1953 1.17 1974 1.42
0.0755 1958 0.59 1948 0.86 1948 0.89 1992 1.01 1965 1.35
0.0943 1962 0.43 1988 0.79 1988 0.79 1969 0.97 1975 1.26
0.1132 1969 0.43 1983 0.76 1983 0.76 1982 0.93 1957 1.24
0.1321 1948 0.42 1969 0.68 1992 0.76 1948 0.89 1953 1.21
0.1509 1968 0.42 1985 0.66 1995 0.75 1951 0.89 1951 1.16
0.1698 1949 0.41 1986 0.66 1993 0.74 1995 0.88 1993 1.15
0.1887 1955 0.40 1958 0.63 1951 0.69 1993 0.84 1983 1.13
0.2075 1984 0.39 1993 0.62 1955 0.69 1957 0.83 1999 1.04
0.2264 1950 0.38 1963 0.61 1958 0.68 1965 0.83 1982 1.02
0.2453 1952 0.38 1968 0.61 1963 0.68 1966 0.83 1992 1.02
0.2642 1993 0.38 1952 0.57 1969 0.68 1975 0.81 1984 1.00
0.2830 1957 0.35 1995 0.55 1982 0.66 1988 0.80 1966 0.98
0.3019 1975 0.35 1954 0.54 1985 0.66 1954 0.78 1985 0.96
0.3208 1990 0.35 1990 0.53 1986 0.66 1961 0.76 1995 0.91
0.3396 1973 0.34 1949 0.52 1949 0.64 1983 0.76 1948 0.90
0.3585 1980 0.34 1992 0.52 1954 0.64 1994 0.76 1988 0.83
0.3774 1998 0.34 1955 0.49 1984 0.64 1949 0.75 1962 0.82
0.3962 1983 0.33 1957 0.49 1968 0.61 1985 0.75 1987 0.82
0.4151 1999 0.33 1984 0.49 1987 0.60 1962 0.74 1996 0.81
0.4340 1965 0.32 1987 O.4g 1966 0.59 1991 0.73 1954 0.78
0.4528 1971 0.32 1982 0.48 1950 0.58 1955 0.72 1955 0.78
0.4717 1976 0.32 1998 0.48 1952 0.58 1984 0.72 1991 077
0.4906 1982 0.32 1961 0.47 1957 0.57 1980 0.70 1950 0.76
0.5094 1954 0.31 1965 0.45 1965 0.57 1950 0.69 1961 0.76
0.5283 1995 0.31 1967 0.45 1970 0.57 1964 0.69 1994 0.76
0.5472 1961. 0.30 1980 0.45 1975 0.57 1987 0.69 1998 0.76
0.5660 1963 0.30 1991 0.45 1980 0.56 1958 0.68 1949 0.75
0.5849 1970' 0.30 1999 0.45 1990 0.56 1963 0.68 1967 0.75
0.6038 1956' 0.28 1950 0.43 1978 0.55 1970 0.67 1973 0.74
0.6226 1981' 0.28 1962 0.43 1999 0.55 1998 0.67 1986 0.74
0.6415 1967 . 0.26 1973 0.43 1961 0.54 1986 0.66 1963 0.73
0.6604 1987 . 0.26 1975 0.43 1979 0.50 1978 0.64 1970 0.71
0.6792 1992 0.26 1978 0.43 1956 0.48 1956 0.63 1981 0.71
0.6981 1964 0.25 1994 0.43 1994 0.48 1968 0.63 1989 0.71
0.7170 1966 0.25 1966 0.42 1998 0.48 1990 0.61 1980 0.70
0.7358 1979 0.25 1981 0.42 1967 0.47 1996 0.61 1964 0.69
0.7547 1985' 0.25 1951 0.40 1972 0.45 1952 0.58 1958 0.68
0.7736 1997 0.25 1970 0.38 1991 0.45 1967 0.58 1990 0.67
0.7925 1989 0.24 1972 0.38 1962 0.43 1981 0.57 1971 0.65
0.8113 1959 0.23 1977 0.38 1964 0.43 1972 0.55 1979 0.65
0.8302 1960. 0.23 1971 0.36 1973 0.43 1999 0.55 1956 0.64
0.8491 1991 0.23 1960 0.34 1981 0.43 1971 0.54 1978 0.64
0.8679 1972 0.21 1956 0.32 1976 0.41 1979 0.54 1952 0.63
0.8868 1978 0.21 1976 0.32 1996 0.41 1973 0.53 1968 0.63
0.9057 1988 0.20 1964 0.31 1977 0.38 1989 0.50 1972 0.63
0.9245 1994 0.19 1979 0.31 1971 0.37 1960 0.45 1977 0.61
0.9434 1951 0.17 1959 0.28 1960 0.36 1976 0.41 1976 0.60
0.9623 1977 0.16 1989 0.26 1959 0.34 1977 0.41 1960 0.51
0.9811 1996 0.10 1996 022 1989 0.29 1959 0.36 1959 0.48