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IP <br /> 5 year 0.051671 <br /> 10 year 0.078842 <br /> 25 year 0.129808 <br /> 50 year 0.18405 <br /> 100 year 0.256668 <br /> Stream Protection Duration <br /> Annual Peaks for Predeveloped and Mitigated. POC #1 <br /> Year Predeveloped Mitigated <br /> 1949 0.022 0. 018 <br /> 1950 0.043 0.026 <br /> 1951 0.035 0. 019 <br /> 1952 0.028 0. 017 <br /> 1953 0.023 0. 016 <br /> 1954 0.087 0. 021 <br /> 1955 0.059 0. 060 <br /> 1956 0.052 0. 063 <br /> 1957 0.058 0. 041 <br /> 1958 0.039 0. 020 <br /> 1959 0.042 0. 021 <br /> 1960 0.037 0.021 <br /> 1961 0.039 0.046 <br /> 1962 0.034 0.017 <br /> 1963 0.041 0.018 <br /> 1964 0.035 0.015 <br /> 1965 0.039 0.023 <br /> 1966 0.021 0.017 <br /> 1967 0.048 0.019 <br /> 1968 0.056 0.027 <br /> 1969 0.042 0.020 <br /> 1970 0.031 0.019 <br /> 1971 0.043 0.066 <br /> 1972 0.038 0.019 <br /> 1973 0.031 0.023 <br /> 1974 0.054 0.021 <br /> 1975 0.031 0.016 <br /> 1976 0.029 0.019 <br /> 1977 0.025 0. 017 <br /> 1978 0.031 0.018 <br /> 1979 0.055 0. 018 <br /> 1980 0.035 0.017 <br /> 1981 0.028 0. 017 <br /> 1982 0.037 0.024 <br /> 1983 0.052 0.019 <br /> 1984 0.039 0. 077 <br /> 1985 0.051 0. 049 <br /> 1986 0.126 0.328 <br /> 1987 0.056 0. 142 <br /> 1988 0.031 0. 021 <br /> 1989 0.026 0. 015 <br /> 1990 0.041 0.037 <br /> 1991 0.043 0.022 <br /> 1992 0.033 0.029 <br /> 1993 0.022 0.015 <br /> 1994 0.020 0.021 <br /> 1995 0.041 0.054 <br /> Juty 2014 4-8 LDC Job No. 13-144 <br />