Precipitation annual maximum series (inches) Station ID: 39-1504 Station name: CASTLE ROCK 4 NW State: SD Latitude (decimal degrees): 45.0100 Longitude (decimal degrees): -103.4828 Elevation (feet): 3150 Duration: 1 hour 06/13/1950 0.50 07/02/1951 0.50 09/07/1952 0.65 08/18/1953 0.78 05/21/1954 0.38 09/20/1955 0.20 06/30/1956 0.95 07/29/1957 0.39 06/07/1958 1.95 07/03/1959 0.42 08/16/1960 0.44 07/27/1961 0.84 06/16/1962 0.54 06/07/1964 1.15 05/23/1965 1.05 06/22/1966 1.65 09/15/1967 0.45 07/17/1968 1.12 07/06/1969 1.48 06/12/1970 0.42 07/19/1974 0.59 Duration: 2 hours 06/13/1950 0.52 08/11/1951 0.82 09/07/1952 0.68 06/19/1953 0.95 05/21/1954 0.64 05/03/1955 0.38 07/02/1956 1.58 08/02/1957 0.66 06/07/1958 2.04 07/03/1959 0.44 08/16/1960 0.53 07/27/1961 1.04 05/17/1962 0.98 06/07/1964 1.38 05/23/1965 1.41 06/22/1966 1.73 09/15/1967 0.65 07/17/1968 1.18 07/06/1969 1.55 05/10/1970 0.54 07/19/1974 1.05 Duration: 3 hours 06/13/1950 0.53 08/11/1951 0.84 06/07/1952 0.70 06/19/1953 1.05 05/21/1954 0.65 06/02/1955 0.47 06/30/1956 1.61 08/02/1957 0.70 06/07/1958 2.08 09/24/1959 0.45 08/16/1960 0.54 07/27/1961 1.08 05/17/1962 1.27 06/07/1964 1.48 05/23/1965 1.52 06/22/1966 1.76 09/15/1967 0.77 07/17/1968 1.20 07/06/1969 1.58 05/10/1970 0.63 07/19/1974 1.10 Duration: 6 hours 09/20/1950 0.69 08/11/1951 0.88 06/07/1952 0.80 06/19/1953 1.27 06/20/1954 0.93 06/02/1955 0.63 06/30/1956 1.69 08/02/1957 0.99 06/07/1958 2.14 09/24/1959 0.87 08/17/1960 0.77 07/27/1961 1.09 05/21/1962 1.46 06/07/1964 1.60 05/24/1965 1.80 06/22/1966 1.78 09/15/1967 0.97 07/17/1968 1.22 07/06/1969 2.94 05/10/1970 0.80 07/19/1974 1.16 Duration: 12 hours 09/20/1950 1.09 08/11/1951 1.08 06/07/1952 0.81 06/19/1953 1.40 06/20/1954 0.97 06/02/1955 0.64 07/02/1956 1.71 06/15/1957 1.14 06/07/1958 2.20 09/24/1959 1.11 08/16/1960 1.16 09/11/1961 1.28 05/21/1962 2.04 06/08/1964 2.38 05/24/1965 1.99 06/22/1966 1.80 04/13/1967 1.31 06/23/1968 1.23 07/06/1969 3.00 06/11/1970 1.09 07/19/1974 1.17 Duration: 1 day 09/20/1950 1.02 08/11/1951 1.00 06/07/1952 0.90 06/19/1953 2.10 06/20/1954 1.02 06/02/1955 0.62 06/30/1956 1.56 05/20/1957 1.23 06/07/1958 1.96 06/30/1959 1.07 06/15/1960 1.49 09/12/1961 1.25 05/21/1962 2.29 06/08/1964 2.55 05/24/1965 1.85 06/22/1966 1.61 09/15/1967 1.33 06/24/1968 1.56 07/06/1969 2.86 06/12/1970 1.42 06/25/1972 2.39 07/19/1974 1.05 Duration: 2 days 09/19/1950 1.19 08/11/1951 1.15 07/12/1952 1.48 06/19/1953 2.26 05/21/1954 1.44 04/04/1955 1.16 05/27/1956 1.91 05/20/1957 1.95 06/07/1958 2.12 09/24/1959 1.34 08/16/1960 1.63 09/11/1961 1.35 05/21/1962 3.25 06/07/1964 4.04 05/23/1965 3.89 06/22/1966 1.73 09/15/1967 1.94 06/23/1968 1.97 07/06/1969 3.16 06/11/1970 1.53 07/19/1974 1.13 Duration: 3 days 09/19/1950 1.24 06/17/1951 1.41 07/11/1952 1.54 06/19/1953 2.35 05/21/1954 1.50 04/03/1955 1.21 06/30/1956 3.36 05/20/1957 2.05 06/07/1958 2.20 05/29/1959 1.39 08/15/1960 1.70 09/11/1961 1.40 05/20/1962 3.38 06/07/1964 4.20 05/22/1965 4.15 06/20/1966 1.81 09/14/1967 2.21 06/23/1968 2.05 07/05/1969 3.29 06/10/1970 1.68 07/17/1974 1.56 Duration: 4 days 09/19/1950 1.25 06/17/1951 1.46 07/11/1952 1.56 06/19/1953 2.37 05/21/1954 1.51 04/03/1955 1.22 06/30/1956 3.44 05/19/1957 2.12 06/07/1958 2.22 05/29/1959 1.40 08/15/1960 1.72 09/11/1961 1.41 05/18/1962 3.52 06/07/1964 4.24 05/22/1965 4.44 06/19/1966 1.87 09/12/1967 2.62 06/23/1968 2.07 07/05/1969 3.32 06/10/1970 1.70 07/17/1974 1.58 Duration: 7 days 04/27/1950 1.49 05/28/1951 1.53 07/11/1952 1.57 06/14/1953 3.50 05/21/1954 2.10 04/03/1955 1.23 06/30/1956 3.54 05/16/1957 2.48 06/01/1958 3.95 05/25/1959 1.64 08/15/1960 1.73 09/12/1961 1.55 05/16/1962 5.88 06/07/1964 4.60 05/21/1965 4.96 06/19/1966 1.89 09/12/1967 3.42 06/23/1968 2.47 07/05/1969 3.36 05/08/1970 2.40 07/13/1974 1.88 Duration: 10 days 04/27/1950 1.66 05/28/1951 1.55 07/11/1952 1.59 06/12/1953 3.60 05/21/1954 2.21 04/03/1955 1.58 06/30/1956 3.64 05/12/1957 2.96 06/01/1958 4.15 09/16/1959 2.83 08/15/1960 1.96 09/12/1961 2.14 05/14/1962 7.57 06/07/1964 4.65 05/22/1965 5.05 06/22/1966 2.01 09/12/1967 3.45 06/20/1968 2.84 07/05/1969 3.39 05/07/1970 2.60 07/13/1974 1.90 Duration: 20 days 04/27/1950 2.57 05/30/1951 2.37 05/20/1952 2.33 06/02/1953 4.30 05/21/1954 3.16 04/03/1955 1.58 06/14/1956 4.29 05/08/1957 3.13 05/23/1958 4.31 09/16/1959 2.85 08/05/1960 3.12 09/02/1961 2.52 05/14/1962 10.70 06/07/1964 5.73 05/08/1965 6.86 06/04/1966 3.06 09/12/1967 3.45 06/06/1968 3.63 07/05/1969 6.05 05/27/1970 2.94 07/01/1974 2.38 Duration: 30 days 04/09/1950 2.75 05/20/1951 3.16 05/13/1952 2.50 05/21/1953 4.70 05/22/1954 4.04 04/04/1955 2.03 06/06/1956 4.95 05/19/1957 4.34 05/23/1958 4.41 09/16/1959 3.42 08/05/1960 3.12 09/11/1961 2.86 05/14/1962 11.65 06/07/1964 7.32 05/08/1965 7.30 06/22/1966 3.69 05/29/1967 4.35 06/03/1968 4.64 06/21/1969 8.14 04/11/1970 4.13 07/01/1974 2.63 Duration: 45 days 03/25/1950 3.09 05/19/1951 4.38 05/30/1952 3.42 05/09/1953 5.16 05/21/1954 5.27 04/03/1955 2.77 05/27/1956 7.09 05/08/1957 5.78 04/25/1958 4.81 05/20/1959 4.57 07/11/1960 3.72 06/13/1961 3.84 05/14/1962 14.02 06/07/1964 8.21 05/14/1965 9.02 06/10/1966 4.44 05/12/1967 5.09 06/03/1968 6.03 06/06/1969 9.52 05/07/1970 5.61 06/05/1974 3.57 Duration: 60 days 04/27/1950 4.69 04/21/1951 5.17 05/20/1952 4.75 04/23/1953 7.18 05/14/1954 5.71 04/04/1955 3.48 05/10/1956 7.27 05/12/1957 6.03 04/19/1958 5.81 05/19/1959 5.51 06/20/1960 3.75 07/27/1961 5.00 04/26/1962 15.10 05/02/1964 9.59 05/14/1965 11.08 06/22/1966 5.52 04/30/1967 5.54 05/29/1968 7.29 05/30/1969 10.02 04/14/1970 6.66 05/27/1974 4.74