Precipitation annual maximum series (inches)
Station ID: 11-7077
Station name: QUINCY DAM 21
State: IL
Latitude (decimal degrees): 39.9058
Longitude (decimal degrees): 91.4281
Elevation (feet): 483

Duration: 01d
2.80	1937
1.98	1938
2.21	1939
2.30	1940
2.05	1941
2.25	1942
4.55	1943
3.43	1944
2.31	1945
3.36	1946
3.79	1947
2.26	1948
5.83	1949
2.28	1950
1.94	1951
1.62	1952
1.38	1953
2.06	1954
4.32	1955
1.81	1956
3.45	1957
3.37	1958
1.39	1959
1.98	1960
3.55	1961
1.85	1962
2.60	1963
2.07	1964
3.42	1965
2.00	1966
2.00	1967
4.56	1968
2.59	1969
4.14	1970
1.54	1971
1.64	1972
3.72	1973
2.10	1974
2.52	1975
1.98	1976
3.95	1977
3.27	1978
1.60	1979
1.73	1980
2.47	1981
4.15	1982
2.60	1983
2.81	1984
2.53	1985
-9.99	1986
-9.99	1987
1.56	1988
2.29	1989
2.60	1990
2.65	1991
2.75	1992
6.06	1993
-9.99	1994
-9.99	1995
2.11	1996
3.27	1997
2.07	1998
2.00	1999
1.53	2000

Duration: 01h
07/25/1948	1.51
07/20/1949	2.60
06/14/1950	1.05
07/22/1951	0.76
08/20/1952	1.57
06/06/1953	0.66
08/08/1954	0.85
05/27/1955	2.17
07/03/1956	1.11
07/28/1957	1.23
07/02/1958	1.82
09/08/1959	0.74
06/28/1960	1.23
06/30/1961	1.76
05/10/1962	1.33
07/06/1963	1.02
06/21/1964	1.26
08/26/1965	2.73
06/12/1966	1.10
07/24/1967	1.40
06/25/1968	1.50
08/20/1969	0.90
09/23/1970	2.00
05/06/1971	1.10
08/03/1972	1.10
06/18/1973	1.10
06/14/1974	0.70
04/18/1975	2.00
05/21/1976	1.30
07/24/1977	1.20
07/01/1978	1.20
04/20/1979	0.80
08/16/1980	1.10
08/26/1981	0.80
05/20/1982	1.10
06/18/1983	0.50
06/09/1984	1.40
07/14/1985	1.60
07/10/1986	1.30
09/15/1987	1.10
05/23/1988	0.40
08/22/1989	0.50
06/07/1990	0.80
09/03/1991	1.30
08/10/1992	1.80
-9/-9/-999	-9.99
-9/-9/-999	-9.99
07/31/1995	1.30
08/15/1996	1.20
02/19/1997	1.00
05/22/1998	0.70
04/05/1999	0.80
06/23/2000	0.90

Duration: 02d
3.77	1937
2.80	1938
3.15	1939
2.34	1940
2.65	1941
2.27	1942
4.90	1943
3.55	1944
3.01	1945
4.00	1946
4.04	1947
2.09	1948
7.56	1949
2.50	1950
2.17	1951
1.67	1952
1.38	1953
2.22	1954
5.30	1955
2.21	1956
4.22	1957
3.63	1958
1.59	1959
2.65	1960
4.40	1961
1.85	1962
3.56	1963
2.64	1964
3.46	1965
3.05	1966
2.41	1967
4.73	1968
3.69	1969
5.25	1970
1.66	1971
2.25	1972
4.61	1973
2.55	1974
2.86	1975
2.58	1976
4.25	1977
3.27	1978
2.53	1979
2.92	1980
4.01	1981
5.01	1982
2.82	1983
2.85	1984
2.96	1985
-9.99	1986
-9.99	1987
1.56	1988
2.92	1989
3.19	1990
3.88	1991
2.75	1992
6.64	1993
-9.99	1994
-9.99	1995
2.53	1996
3.65	1997
2.67	1998
2.44	1999
2.20	2000

Duration: 02h
07/25/1948	1.63
07/20/1949	3.48
06/14/1950	1.40
07/22/1951	1.21
08/20/1952	1.63
06/06/1953	0.87
05/31/1954	1.04
05/27/1955	2.97
07/03/1956	1.12
07/28/1957	1.63
07/02/1958	3.12
09/08/1959	1.15
06/28/1960	1.54
06/30/1961	1.78
05/10/1962	1.63
05/15/1963	1.71
06/21/1964	2.22
08/26/1965	3.96
06/12/1966	1.20
07/24/1967	1.40
06/25/1968	2.60
10/10/1969	1.10
09/23/1970	3.00
05/06/1971	1.20
08/03/1972	1.40
03/13/1973	1.20
05/30/1974	1.00
09/11/1975	2.20
05/21/1976	1.40
08/15/1977	1.60
07/01/1978	2.20
04/20/1979	1.10
08/16/1980	1.20
09/25/1981	1.00
05/20/1982	1.30
05/01/1983	0.60
06/08/1984	1.90
07/31/1985	1.80
07/10/1986	1.70
09/15/1987	1.40
05/23/1988	0.70
08/28/1989	0.70
05/25/1990	0.90
09/03/1991	1.90
08/10/1992	2.00
-9/-9/-999	-9.99
-9/-9/-999	-9.99
07/31/1995	2.30
08/15/1996	1.20
02/19/1997	1.40
07/04/1998	1.00
05/17/1999	1.00
06/14/2000	1.00

Duration: 03h
07/25/1948	1.71
07/20/1949	3.65
06/14/1950	1.54
07/22/1951	1.45
06/03/1952	1.65
07/21/1953	0.95
09/19/1954	1.13
05/27/1955	3.29
04/28/1956	1.15
07/28/1957	2.42
07/02/1958	3.31
09/08/1959	1.17
06/23/1960	1.55
06/30/1961	1.80
05/10/1962	1.63
05/15/1963	1.89
06/21/1964	2.26
08/26/1965	4.08
05/17/1966	1.40
07/23/1967	1.50
06/24/1968	3.40
10/10/1969	1.20
09/23/1970	3.70
05/06/1971	1.20
08/03/1972	1.60
03/13/1973	1.30
05/30/1974	1.20
09/11/1975	2.40
05/21/1976	1.40
08/15/1977	2.10
07/01/1978	2.30
04/20/1979	1.20
08/16/1980	1.20
07/26/1981	1.20
05/20/1982	1.50
05/01/1983	0.70
06/08/1984	2.40
07/31/1985	2.30
07/10/1986	1.80
07/06/1987	1.60
05/23/1988	0.80
08/29/1989	1.00
05/25/1990	1.10
09/03/1991	1.90
07/02/1992	2.00
06/30/1993	4.60
-9/-9/-999	-9.99
07/31/1995	2.40
08/15/1996	1.20
02/19/1997	2.00
07/04/1998	1.00
05/17/1999	1.00
06/14/2000	1.40

Duration: 04d
4.66	1937
3.35	1938
3.51	1939
2.34	1940
4.67	1941
2.90	1942
4.90	1943
3.55	1944
3.86	1945
4.15	1946
4.04	1947
2.26	1948
8.74	1949
2.83	1950
2.43	1951
2.06	1952
1.82	1953
2.99	1954
5.52	1955
2.21	1956
4.25	1957
3.81	1958
2.76	1959
3.96	1960
6.24	1961
2.59	1962
3.75	1963
3.16	1964
3.46	1965
3.66	1966
2.77	1967
4.78	1968
7.03	1969
7.86	1970
1.66	1971
3.42	1972
4.70	1973
2.61	1974
2.86	1975
2.58	1976
4.83	1977
3.77	1978
2.65	1979
3.11	1980
4.84	1981
5.85	1982
3.18	1983
3.08	1984
3.62	1985
-9.99	1986
-9.99	1987
1.95	1988
3.24	1989
3.44	1990
4.58	1991
3.72	1992
6.72	1993
-9.99	1994
-9.99	1995
3.37	1996
3.65	1997
2.78	1998
2.64	1999
3.17	2000

Duration: 06h
07/25/1948	1.76
07/20/1949	5.70
06/14/1950	1.98
07/22/1951	1.90
06/03/1952	1.65
09/03/1953	1.23
02/15/1954	1.30
05/27/1955	4.04
04/28/1956	1.66
07/27/1957	2.65
07/02/1958	3.44
09/08/1959	1.17
06/23/1960	2.10
09/13/1961	2.42
05/10/1962	1.63
07/13/1963	1.98
06/21/1964	2.27
08/26/1965	4.08
09/18/1966	1.70
07/23/1967	2.10
06/24/1968	4.60
10/10/1969	2.10
09/23/1970	4.00
05/06/1971	1.20
08/03/1972	1.70
06/18/1973	2.10
07/03/1974	1.60
09/11/1975	2.40
05/21/1976	1.40
08/15/1977	2.40
07/01/1978	3.00
04/10/1979	1.30
03/30/1980	1.40
07/26/1981	1.70
12/02/1982	1.90
04/01/1983	0.90
06/08/1984	2.80
07/31/1985	2.30
10/02/1986	2.00
07/06/1987	2.20
05/23/1988	1.10
08/29/1989	1.10
06/07/1990	1.60
10/03/1991	2.30
07/02/1992	2.20
06/30/1993	6.10
-9/-9/-999	-9.99
07/31/1995	2.50
05/26/1996	1.50
02/19/1997	3.40
09/13/1998	1.30
05/17/1999	1.00
06/14/2000	1.60

Duration: 07d
5.17	1937
4.24	1938
5.44	1939
2.75	1940
5.30	1941
3.68	1942
4.90	1943
4.10	1944
4.70	1945
4.23	1946
4.99	1947
3.02	1948
8.76	1949
4.32	1950
2.71	1951
3.15	1952
1.86	1953
3.61	1954
5.69	1955
2.67	1956
4.43	1957
4.96	1958
2.94	1959
3.96	1960
6.24	1961
3.04	1962
4.99	1963
3.28	1964
4.32	1965
3.69	1966
4.38	1967
4.99	1968
7.08	1969
9.42	1970
2.42	1971
4.14	1972
5.41	1973
3.55	1974
3.40	1975
2.99	1976
4.91	1977
3.96	1978
2.65	1979
4.98	1980
5.99	1981
5.99	1982
3.64	1983
3.56	1984
6.32	1985
-9.99	1986
-9.99	1987
2.47	1988
4.04	1989
3.96	1990
4.58	1991
4.57	1992
7.33	1993
-9.99	1994
-9.99	1995
4.11	1996
5.09	1997
3.28	1998
2.71	1999
4.36	2000

Duration: 10d
5.38	1937
4.30	1938
5.98	1939
2.78	1940
6.10	1941
3.83	1942
5.56	1943
4.69	1944
5.97	1945
4.55	1946
5.56	1947
3.06	1948
9.66	1949
4.40	1950
2.97	1951
3.43	1952
2.29	1953
4.26	1954
5.76	1955
3.48	1956
5.35	1957
6.01	1958
3.57	1959
5.97	1960
6.24	1961
3.04	1962
5.01	1963
4.24	1964
5.51	1965
4.32	1966
5.80	1967
4.99	1968
7.28	1969
9.91	1970
2.64	1971
4.14	1972
5.56	1973
3.89	1974
4.17	1975
3.01	1976
6.43	1977
4.88	1978
2.69	1979
5.00	1980
7.71	1981
6.52	1982
4.11	1983
4.11	1984
7.04	1985
-9.99	1986
-9.99	1987
2.55	1988
4.72	1989
4.80	1990
4.84	1991
5.32	1992
7.86	1993
-9.99	1994
-9.99	1995
4.39	1996
5.38	1997
4.26	1998
3.36	1999
5.08	2000

Duration: 12h
07/25/1948	1.79
07/20/1949	7.43
06/14/1950	1.98
07/22/1951	2.10
08/20/1952	1.69
09/03/1953	1.34
05/31/1954	1.92
05/27/1955	4.47
04/28/1956	1.74
07/27/1957	2.71
07/02/1958	3.47
09/08/1959	1.17
06/23/1960	2.10
09/13/1961	3.40
03/20/1962	1.71
05/15/1963	2.39
06/21/1964	2.27
08/26/1965	4.08
09/18/1966	2.10
07/23/1967	2.10
06/24/1968	4.70
10/10/1969	2.40
09/23/1970	4.20
01/03/1971	1.60
08/03/1972	1.90
05/26/1973	2.80
05/30/1974	2.10
09/11/1975	2.60
03/03/1976	1.40
09/12/1977	2.80
07/01/1978	3.20
11/20/1979	1.40
08/16/1980	1.90
07/26/1981	2.60
12/02/1982	3.30
11/27/1983	1.60
06/08/1984	2.90
11/18/1985	2.80
10/02/1986	3.40
07/06/1987	2.20
05/23/1988	1.10
08/29/1989	1.30
06/07/1990	2.30
10/03/1991	2.80
07/02/1992	2.70
06/30/1993	6.10
-9/-9/-999	-9.99
07/31/1995	2.60
08/15/1996	2.60
02/19/1997	3.80
09/13/1998	1.90
04/14/1999	1.30
06/14/2000	2.00

Duration: 20d
6.79	1937
5.82	1938
8.25	1939
3.33	1940
7.70	1941
5.45	1942
7.20	1943
8.14	1944
9.76	1945
7.08	1946
7.42	1947
5.01	1948
11.15	1949
5.39	1950
5.40	1951
5.00	1952
2.84	1953
6.05	1954
7.64	1955
4.58	1956
6.55	1957
9.82	1958
4.75	1959
7.98	1960
9.96	1961
4.63	1962
6.28	1963
6.12	1964
6.74	1965
5.24	1966
6.97	1967
9.77	1968
9.40	1969
11.81	1970
3.52	1971
6.52	1972
7.21	1973
6.45	1974
6.37	1975
4.38	1976
10.58	1977
6.28	1978
4.98	1979
6.82	1980
8.62	1981
7.38	1982
5.11	1983
5.01	1984
9.04	1985
-9.99	1986
-9.99	1987
3.33	1988
7.59	1989
6.70	1990
8.07	1991
7.23	1992
9.90	1993
-9.99	1994
-9.99	1995
6.08	1996
6.29	1997
5.83	1998
4.84	1999
7.91	2000

Duration: 24h
07/25/1948	1.79
07/19/1949	7.53
06/13/1950	2.18
07/22/1951	2.10
08/20/1952	1.69
09/03/1953	1.34
05/31/1954	2.11
05/27/1955	4.47
04/28/1956	2.13
07/27/1957	3.40
07/14/1958	3.81
10/04/1959	1.41
06/23/1960	2.10
09/12/1961	4.21
03/20/1962	1.90
05/15/1963	3.30
06/20/1964	2.78
08/26/1965	4.08
09/18/1966	3.20
07/23/1967	2.20
06/14/1968	4.90
10/11/1969	3.40
08/04/1970	5.10
12/14/1971	1.80
03/12/1972	2.50
05/26/1973	2.90
05/30/1974	2.10
09/11/1975	2.60
03/03/1976	2.00
09/12/1977	4.00
07/01/1978	3.20
04/10/1979	2.50
08/16/1980	2.20
07/03/1981	3.00
12/02/1982	5.00
04/01/1983	2.10
06/08/1984	3.00
11/18/1985	3.00
10/02/1986	3.80
07/06/1987	2.20
05/22/1988	1.30
08/28/1989	2.00
06/07/1990	2.30
10/03/1991	3.00
07/02/1992	2.70
06/30/1993	6.10
-9/-9/-999	-9.99
07/31/1995	2.80
08/15/1996	3.00
02/19/1997	4.00
09/13/1998	2.50
04/14/1999	1.90
06/14/2000	2.20

Duration: 30d
7.79	1937
7.09	1938
10.04	1939
3.59	1940
9.62	1941
6.75	1942
8.35	1943
9.57	1944
10.68	1945
8.93	1946
9.88	1947
6.29	1948
15.24	1949
6.62	1950
6.13	1951
6.23	1952
4.00	1953
7.97	1954
8.95	1955
5.08	1956
8.81	1957
12.36	1958
5.44	1959
9.07	1960
11.00	1961
5.07	1962
6.68	1963
7.42	1964
9.50	1965
6.61	1966
7.71	1967
9.95	1968
10.07	1969
12.61	1970
4.27	1971
7.23	1972
10.82	1973
8.54	1974
7.88	1975
5.46	1976
12.51	1977
7.39	1978
6.00	1979
9.26	1980
11.94	1981
9.77	1982
5.92	1983
6.19	1984
10.16	1985
-9.99	1986
-9.99	1987
3.48	1988
8.11	1989
10.14	1990
11.89	1991
8.53	1992
11.60	1993
-9.99	1994
-9.99	1995
9.05	1996
6.41	1997
8.80	1998
6.14	1999
8.88	2000

Duration: 45d
8.44	1937
9.20	1938
10.13	1939
3.65	1940
12.14	1941
9.62	1942
10.60	1943
12.49	1944
11.03	1945
9.37	1946
13.47	1947
9.43	1948
16.88	1949
8.66	1950
8.83	1951
8.74	1952
5.53	1953
8.32	1954
11.03	1955
8.19	1956
11.72	1957
13.89	1958
7.07	1959
10.88	1960
11.93	1961
6.41	1962
7.29	1963
9.08	1964
11.29	1965
8.91	1966
11.01	1967
13.35	1968
12.52	1969
15.68	1970
5.62	1971
7.87	1972
13.62	1973
10.76	1974
10.33	1975
6.91	1976
15.48	1977
9.61	1978
7.69	1979
11.62	1980
16.76	1981
13.60	1982
8.56	1983
7.94	1984
12.42	1985
-9.99	1986
-9.99	1987
4.22	1988
9.11	1989
12.58	1990
14.08	1991
10.02	1992
14.49	1993
-9.99	1994
-9.99	1995
11.27	1996
7.65	1997
10.88	1998
9.39	1999
10.72	2000

Duration: 48h
07/04/1948	2.22
07/19/1949	8.11
06/12/1950	2.38
03/27/1951	2.36
06/03/1952	2.09
03/29/1953	1.59
05/31/1954	2.45
05/26/1955	5.46
07/02/1956	2.25
07/27/1957	4.21
07/14/1958	3.81
10/04/1959	1.90
06/28/1960	3.40
09/11/1961	6.06
03/20/1962	1.90
05/15/1963	3.41
12/31/1964	3.27
08/26/1965	4.11
09/18/1966	3.20
05/05/1967	2.40
06/14/1968	4.90
10/10/1969	5.30
09/21/1970	7.20
12/14/1971	1.90
03/12/1972	2.50
05/26/1973	3.00
05/29/1974	2.50
05/06/1975	2.90
03/03/1976	2.40
09/12/1977	4.20
07/01/1978	3.20
04/10/1979	2.50
12/06/1980	2.80
07/25/1981	3.80
12/02/1982	5.20
03/31/1983	2.20
06/08/1984	3.00
11/18/1985	3.60
10/02/1986	4.10
08/13/1987	3.10
05/22/1988	1.30
08/27/1989	2.10
06/06/1990	2.90
10/02/1991	4.10
07/02/1992	2.70
-9/-9/-999	-9.99
-9/-9/-999	-9.99
07/31/1995	4.30
05/06/1996	3.20
02/19/1997	4.00
09/13/1998	2.70
04/14/1999	2.60
06/14/2000	2.20

Duration: 60d
10.14	1937
12.24	1938
12.34	1939
6.19	1940
14.95	1941
12.48	1942
11.75	1943
14.16	1944
12.86	1945
10.56	1946
14.91	1947
9.94	1948
19.77	1949
10.66	1950
10.65	1951
10.71	1952
6.53	1953
10.36	1954
12.67	1955
9.41	1956
14.24	1957
15.79	1958
7.95	1959
13.41	1960
13.54	1961
7.09	1962
9.12	1963
11.68	1964
11.92	1965
11.00	1966
13.33	1967
14.33	1968
14.04	1969
24.14	1970
6.70	1971
9.34	1972
16.48	1973
12.53	1974
13.84	1975
8.20	1976
20.85	1977
13.95	1978
9.30	1979
13.00	1980
18.98	1981
15.58	1982
9.49	1983
9.59	1984
14.79	1985
-9.99	1986
-9.99	1987
4.81	1988
11.11	1989
13.80	1990
15.84	1991
11.29	1992
16.23	1993
-9.99	1994
-9.99	1995
12.42	1996
11.25	1997
12.70	1998
10.77	1999
12.21	2000