Precipitation annual maximum series (inches) Station ID: 34-3700 Station name: GRAND RIVER DAM State: OK Latitude (decimal degrees): 36.4667 Longitude (decimal degrees): -95.0500 Elevation (feet): 771 Duration: 1 hour 06/16/1948 1.20 07/08/1949 1.60 05/29/1950 1.19 09/09/1951 1.05 02/01/1952 0.85 07/12/1958 1.61 10/02/1959 2.20 08/20/1960 0.70 08/14/1961 1.24 06/09/1962 1.23 08/14/1964 1.51 06/13/1965 1.05 05/17/1966 1.19 06/25/1967 1.17 08/10/1968 1.54 06/01/1969 0.95 10/26/1970 1.55 05/22/1971 1.14 07/03/1972 2.48 05/31/1974 1.82 09/18/1975 1.19 06/08/1979 1.02 Duration: 2 hours 07/14/1948 2.05 07/07/1949 2.60 05/29/1950 1.70 09/09/1951 1.23 02/01/1952 1.10 08/04/1957 3.00 07/20/1958 2.42 10/02/1959 2.69 08/20/1960 1.10 08/14/1961 2.04 06/09/1962 1.91 08/14/1964 1.91 06/13/1965 1.40 05/17/1966 1.47 06/25/1967 1.53 08/10/1968 1.69 06/01/1969 1.20 06/02/1970 2.26 05/22/1971 1.96 07/03/1972 2.60 06/02/1973 3.09 06/08/1974 2.02 09/18/1975 2.01 06/08/1979 1.53 Duration: 3 hours 07/14/1948 2.64 07/07/1949 2.90 05/29/1950 1.74 09/09/1951 1.29 02/01/1952 1.29 08/04/1957 3.16 07/12/1958 3.55 10/02/1959 2.74 08/20/1960 1.35 08/14/1961 2.54 06/09/1962 2.01 08/26/1964 2.57 04/02/1965 1.53 05/17/1966 1.50 06/25/1967 1.78 08/10/1968 1.84 10/12/1969 1.26 06/02/1970 2.30 05/22/1971 2.26 07/03/1972 2.65 09/01/1974 2.48 09/18/1975 2.22 06/08/1979 1.89 Duration: 6 hours 08/08/1948 3.06 07/07/1949 3.20 05/29/1950 1.84 06/30/1951 2.13 02/01/1952 1.62 07/12/1958 4.14 10/02/1959 2.85 07/22/1960 1.46 08/14/1961 3.74 06/09/1962 2.28 08/26/1964 2.71 04/02/1965 2.00 07/19/1966 1.65 06/25/1967 1.98 06/24/1968 2.58 10/12/1969 1.77 06/01/1970 2.42 05/22/1971 2.54 09/26/1972 2.90 06/02/1973 3.97 09/01/1974 3.88 09/18/1975 3.59 06/08/1979 2.26 Duration: 12 hours 08/08/1948 4.59 07/07/1949 3.40 05/10/1950 2.91 10/06/1951 2.48 05/24/1952 1.77 07/11/1958 4.57 10/02/1959 3.45 07/22/1960 2.13 08/13/1961 5.00 06/09/1962 2.64 08/25/1964 5.40 04/02/1965 2.44 07/19/1966 1.70 06/24/1967 2.38 06/24/1968 3.17 10/12/1969 2.69 04/30/1970 2.88 05/21/1971 2.58 10/31/1972 3.32 09/01/1974 3.94 09/18/1975 4.62 06/08/1979 2.37 Duration: 1 day 07/12/1924 2.45 11/07/1925 2.21 09/05/1926 6.97 10/02/1927 5.15 08/04/1928 3.81 10/12/1929 5.42 09/09/1930 2.90 10/12/1931 2.95 12/24/1932 3.70 08/21/1933 2.93 09/02/1934 2.68 03/11/1935 3.80 09/27/1936 4.15 09/09/1937 2.58 06/26/1938 3.99 06/12/1939 5.30 09/25/1940 3.34 10/04/1941 4.98 10/29/1942 2.95 05/17/1943 4.86 09/04/1944 2.50 09/24/1945 5.13 06/30/1946 3.46 04/10/1947 2.93 06/21/1948 4.46 05/19/1949 4.03 05/10/1950 4.09 02/14/1951 3.61 05/23/1952 1.84 10/03/1953 2.12 05/02/1954 2.00 09/30/1955 4.48 05/15/1956 2.60 05/25/1957 4.50 07/12/1958 4.78 09/24/1959 4.37 04/14/1960 3.54 08/14/1961 6.98 08/01/1962 2.40 07/12/1963 2.20 08/26/1964 4.82 09/21/1965 2.90 07/20/1966 1.94 06/25/1967 2.14 06/25/1968 3.21 10/13/1969 3.26 09/04/1970 3.57 09/18/1971 2.30 11/01/1972 4.04 06/03/1973 4.62 11/03/1974 4.76 09/19/1975 4.12 09/14/1976 3.00 09/29/1977 3.83 06/19/1978 2.69 Duration: 2 days 09/19/1924 3.10 09/24/1925 2.38 09/04/1926 7.62 10/02/1927 5.55 08/04/1928 4.67 10/12/1929 5.84 06/15/1930 3.48 10/12/1931 3.84 12/23/1932 5.80 09/02/1933 3.79 09/02/1934 4.09 03/11/1935 4.45 09/27/1936 6.79 06/15/1937 3.17 06/26/1938 4.30 06/12/1939 5.71 11/20/1940 3.60 10/03/1941 5.36 10/29/1942 3.80 05/09/1943 6.60 09/04/1944 2.69 09/23/1945 6.68 06/29/1946 4.16 04/23/1947 3.80 06/21/1948 5.77 05/18/1949 4.86 05/09/1950 4.62 02/14/1951 4.31 05/23/1952 2.00 10/03/1953 2.45 05/01/1954 2.82 09/29/1955 4.82 05/14/1956 4.60 05/25/1957 5.30 07/11/1958 5.15 10/02/1959 5.69 04/14/1960 4.57 08/14/1961 8.08 08/01/1962 3.52 07/11/1963 2.37 06/13/1964 6.05 09/21/1965 3.90 05/17/1966 2.27 06/25/1967 2.31 06/25/1968 4.19 10/12/1969 4.44 09/03/1970 5.17 07/01/1971 3.76 07/02/1972 5.24 06/02/1973 5.14 11/03/1974 6.49 09/18/1975 4.56 07/03/1976 3.39 09/29/1977 4.12 06/18/1978 4.39 Duration: 3 days 09/19/1924 3.13 04/25/1925 2.88 09/04/1926 7.69 09/30/1927 5.61 08/04/1928 4.72 10/10/1929 5.93 06/15/1930 3.58 10/12/1931 4.19 12/23/1932 5.86 05/13/1933 4.01 09/02/1934 4.13 03/11/1935 4.49 09/27/1936 6.86 06/15/1937 3.20 06/26/1938 4.34 05/11/1939 5.91 11/20/1940 3.63 04/15/1941 5.42 10/29/1942 3.84 05/08/1943 7.37 09/04/1944 2.72 09/22/1945 7.14 11/01/1946 4.33 04/08/1947 4.12 06/21/1948 8.61 05/17/1949 5.13 05/09/1950 4.75 06/28/1951 4.35 11/24/1952 2.12 03/12/1953 2.63 04/30/1954 4.44 09/28/1955 5.55 05/14/1956 4.64 05/23/1957 5.48 07/11/1958 5.20 10/01/1959 7.15 07/21/1960 4.84 08/13/1961 8.63 06/09/1962 3.55 07/11/1963 2.39 08/26/1964 7.29 09/20/1965 4.54 09/03/1966 2.45 06/25/1967 2.37 06/25/1968 4.23 10/11/1969 4.71 09/02/1970 5.30 05/22/1971 3.80 07/02/1972 5.59 06/03/1973 5.21 11/03/1974 6.55 09/18/1975 4.60 04/18/1976 4.51 09/12/1977 4.72 06/19/1978 4.83 Duration: 4 days 09/19/1924 3.55 04/25/1925 2.98 09/04/1926 7.77 09/29/1927 5.73 08/04/1928 4.77 10/10/1929 5.99 09/06/1930 3.82 10/12/1931 4.23 12/23/1932 5.92 05/12/1933 4.69 09/02/1934 4.17 03/11/1935 4.54 09/27/1936 6.93 06/15/1937 3.23 02/15/1938 4.38 06/12/1939 6.88 11/20/1940 4.26 04/16/1941 8.72 04/24/1942 4.77 05/07/1943 7.79 04/07/1944 2.75 04/12/1945 8.00 11/01/1946 4.47 04/08/1947 4.16 06/21/1948 8.69 07/07/1949 5.70 05/07/1950 5.22 06/28/1951 4.39 11/24/1952 2.14 03/12/1953 2.66 04/30/1954 4.48 09/27/1955 5.90 05/14/1956 4.69 05/23/1957 6.28 07/11/1958 5.25 09/30/1959 8.77 04/14/1960 5.46 08/13/1961 8.71 06/08/1962 3.59 07/11/1963 2.42 08/26/1964 7.36 09/20/1965 4.58 09/02/1966 2.47 06/25/1967 3.50 06/25/1968 4.27 10/11/1969 4.76 09/02/1970 5.35 05/22/1971 3.84 07/02/1972 5.64 06/02/1973 5.73 11/01/1974 6.62 09/16/1975 4.65 04/17/1976 5.08 09/12/1977 5.47 06/18/1978 6.53 Duration: 7 days 04/25/1924 3.99 04/21/1925 3.13 09/04/1926 8.90 09/26/1927 8.60 07/30/1928 5.27 10/10/1929 6.05 06/10/1930 5.39 10/08/1931 4.35 12/23/1932 5.98 05/12/1933 4.74 09/02/1934 4.21 03/11/1935 4.58 09/23/1936 8.40 06/10/1937 4.47 02/14/1938 4.46 06/09/1939 7.93 11/20/1940 6.15 04/14/1941 10.25 06/09/1942 5.43 05/07/1943 7.87 06/08/1944 3.94 09/22/1945 8.78 06/24/1946 5.93 04/05/1947 4.52 06/21/1948 9.40 07/06/1949 7.15 05/07/1950 5.94 02/14/1951 5.68 05/23/1952 2.59 07/03/1953 3.65 04/27/1954 4.56 09/29/1955 7.53 05/14/1956 4.74 05/21/1957 9.98 07/06/1958 5.87 09/29/1959 11.44 04/14/1960 5.51 08/13/1961 8.80 06/07/1962 3.95 07/07/1963 3.21 08/26/1964 8.22 09/20/1965 4.63 04/18/1966 3.70 06/23/1967 4.10 04/17/1968 4.31 10/07/1969 5.15 09/02/1970 5.40 07/01/1971 4.03 06/27/1972 6.98 05/31/1973 6.28 10/29/1974 8.46 09/15/1975 4.73 04/16/1976 5.68 09/12/1977 5.54 06/18/1978 6.74 Duration: 10 days 09/19/1924 4.84 04/21/1925 3.23 09/04/1926 8.99 09/25/1927 9.48 04/21/1928 5.33 10/04/1929 6.11 06/10/1930 5.49 10/08/1931 4.39 12/23/1932 6.04 08/25/1933 5.16 08/26/1934 4.65 05/29/1935 6.17 09/23/1936 8.48 06/09/1937 6.17 06/07/1938 4.59 06/06/1939 8.30 11/20/1940 6.21 04/14/1941 10.35 06/08/1942 7.58 05/09/1943 12.85 06/05/1944 4.32 09/22/1945 9.93 10/31/1946 6.01 04/01/1947 5.22 06/14/1948 11.00 07/04/1949 7.45 05/07/1950 6.00 06/21/1951 6.18 05/23/1952 2.94 07/03/1953 4.08 04/23/1954 4.90 09/26/1955 8.84 05/14/1956 4.79 05/21/1957 10.87 07/12/1958 7.49 09/24/1959 14.50 04/14/1960 5.57 08/13/1961 9.63 06/02/1962 4.77 07/07/1963 3.24 06/13/1964 8.51 09/14/1965 5.76 05/12/1966 3.98 06/21/1967 4.15 06/25/1968 4.71 10/06/1969 5.45 09/02/1970 5.54 07/01/1971 4.07 06/25/1972 7.80 05/27/1973 7.69 10/26/1974 10.03 09/10/1975 6.75 04/16/1976 6.40 09/06/1977 6.12 06/18/1978 6.81 Duration: 20 days 05/28/1924 6.70 04/09/1925 4.67 09/25/1926 9.19 09/25/1927 9.48 06/11/1928 6.89 05/02/1929 7.16 06/05/1930 7.20 10/08/1931 5.88 12/14/1932 6.24 08/21/1933 8.18 09/02/1934 8.31 05/29/1935 9.41 09/23/1936 12.76 05/31/1937 6.49 06/07/1938 8.58 05/08/1939 9.66 11/10/1940 6.39 09/28/1941 12.53 06/05/1942 10.95 05/08/1943 16.22 05/25/1944 6.05 09/12/1945 10.88 10/23/1946 7.23 04/05/1947 8.66 06/14/1948 12.84 05/15/1949 7.81 05/07/1950 8.21 06/11/1951 8.42 08/04/1952 3.99 07/03/1953 5.33 04/22/1954 6.12 09/22/1955 8.97 04/29/1956 6.57 05/12/1957 14.51 07/04/1958 9.60 09/24/1959 17.13 05/04/1960 6.65 08/13/1961 9.84 08/31/1962 7.83 07/11/1963 3.32 08/14/1964 11.60 09/04/1965 6.65 07/26/1966 5.35 06/10/1967 5.63 06/15/1968 4.99 10/06/1969 5.54 10/08/1970 6.42 09/16/1971 5.55 06/15/1972 8.96 05/24/1973 8.83 10/26/1974 10.57 09/06/1975 7.22 04/14/1976 7.53 09/11/1977 9.86 06/05/1978 7.58 Duration: 30 days 05/28/1924 8.55 09/11/1925 5.77 09/05/1926 16.28 03/29/1927 11.40 06/13/1928 9.72 04/14/1929 11.48 05/18/1930 8.82 08/03/1931 7.07 12/23/1932 7.51 04/20/1933 9.79 08/23/1934 9.62 05/19/1935 12.08 09/17/1936 15.32 05/22/1937 7.69 06/10/1938 10.08 05/19/1939 11.09 10/29/1940 7.66 10/01/1941 16.79 06/04/1942 11.26 05/08/1943 20.09 05/20/1944 7.85 03/18/1945 12.16 04/22/1946 8.86 04/01/1947 9.75 06/16/1948 16.18 05/15/1949 9.07 05/07/1950 10.81 06/03/1951 12.42 07/30/1952 4.11 04/18/1953 5.98 04/11/1954 6.89 09/11/1955 9.24 05/02/1956 7.42 04/30/1957 18.53 07/04/1958 11.77 09/24/1959 17.13 04/14/1960 9.07 08/13/1961 13.46 08/25/1962 8.98 07/07/1963 4.27 05/31/1964 13.26 08/28/1965 8.07 07/20/1966 7.50 06/06/1967 6.43 04/17/1968 6.82 05/31/1969 6.53 10/06/1970 8.64 11/18/1971 6.77 10/22/1972 11.15 05/23/1973 11.31 10/13/1974 12.92 05/20/1975 9.09 04/17/1976 8.63 09/11/1977 11.90 03/21/1978 8.38 Duration: 45 days 04/29/1924 10.36 09/24/1925 8.20 09/04/1926 18.09 06/01/1927 13.41 06/21/1928 12.89 04/08/1929 13.73 05/04/1930 13.02 10/12/1931 9.17 05/22/1932 8.68 04/05/1933 13.20 08/17/1934 11.24 05/18/1935 15.98 09/17/1936 16.55 06/09/1937 10.08 05/26/1938 13.45 05/08/1939 18.88 04/07/1940 10.98 09/04/1941 20.29 05/11/1942 12.79 05/07/1943 21.67 04/29/1944 10.42 03/06/1945 14.46 04/22/1946 11.04 04/08/1947 12.48 06/14/1948 18.60 04/30/1949 10.24 04/29/1950 12.63 06/03/1951 13.37 03/10/1952 5.56 03/12/1953 8.26 04/22/1954 10.28 08/23/1955 11.81 05/14/1956 9.64 04/16/1957 24.33 06/16/1958 15.31 08/25/1959 18.72 04/14/1960 13.73 07/12/1961 18.16 08/25/1962 11.45 06/16/1963 5.07 05/28/1964 14.27 05/10/1965 9.55 07/23/1966 9.06 09/16/1967 8.55 04/17/1968 9.38 05/17/1969 8.05 09/02/1970 11.10 05/22/1971 8.11 09/20/1972 12.84 05/27/1973 14.49 08/07/1974 13.27 08/14/1975 11.49 04/14/1976 11.26 08/28/1977 14.87 03/21/1978 11.18 Duration: 60 days 04/25/1924 14.61 09/11/1925 10.05 08/13/1926 19.91 04/08/1927 17.61 06/09/1928 16.44 04/08/1929 16.40 05/02/1930 13.74 04/21/1931 10.31 06/01/1932 9.86 04/05/1933 14.93 08/20/1934 13.60 05/04/1935 17.59 09/08/1936 18.96 06/03/1937 11.97 05/13/1938 15.31 05/08/1939 20.54 04/03/1940 11.91 09/04/1941 26.09 04/24/1942 16.96 04/08/1943 23.60 04/19/1944 12.92 02/16/1945 18.08 05/02/1946 14.35 04/05/1947 15.01 05/23/1948 20.71 05/15/1949 17.35 05/07/1950 14.88 06/03/1951 14.17 04/03/1952 7.04 03/03/1953 10.46 04/11/1954 11.40 08/07/1955 12.03 05/02/1956 12.16 03/31/1957 27.26 06/11/1958 17.20 08/18/1959 19.66 04/14/1960 15.44 07/07/1961 22.50 08/31/1962 13.76 05/02/1964 15.02 05/09/1965 11.21 07/16/1966 10.84 09/04/1967 10.40 05/04/1968 11.08 04/27/1969 9.59 09/02/1970 16.32 10/19/1971 9.99 09/27/1972 16.20 04/07/1973 17.14 09/13/1974 15.99 07/22/1975 14.12 03/29/1976 12.04 08/12/1977 18.45 04/29/1978 14.00