| Year | Max Depth (inches) | Date |
|---|---|---|
| 2024 | 13.0 | January 13 |
| 2023 | 8.0 | January 29 |
| 2022 | 8.0 | December 22 |
| 2021 | 11.0 | January 31 |
| 2020 | 13.0 | February 10 |
| 2019 | 17.0 | January 29 |
| 2018 | 7.0 | February 9 |
| 2017 | 6.0 | January 31 |
| 2016 | 12.0 | December 18 |
| 2015 | 7.0 | December 29 |
| 2014 | 11.0 | February 18 |
| 2013 | 11.0 | December 25 |
| 2012 | 11.0 | December 21 |
| 2011 | 18.0 | February 2 |
| 2010 | 14.0 | December 12 |
| 2009 | 13.0 | January 14 |
| 2008 | 30.0 | February 19 |
| 2007 | 14.0 | February 26 |
| 2006 | 5.0 | February 17 |
| 2005 | 11.0 | January 22 |
| 2004 | 13.0 | February 6 |
| 2003 | 4.0 | January 31 |
| 2002 | 7.0 | March 3 |
| 2001 | 14.0 | January 1 |
| 2000 | 19.0 | December 24 |
| 1999 | 21.0 | January 13 |
| 1998 | 11.0 | January 26 |
| 1997 | 15.0 | March 15 |
| 1996 | 19.0 | January 29 |
| 1995 | 8.0 | March 7 |
| 1994 | 15.0 | February 13 |
| 1993 | 9.0 | February 23 |
| 1992 | 9.0 | December 10 |
| 1991 | 9.0 | January 12 |
| 1990 | 10.0 | December 4 |
| 1989 | 7.0 | March 4 |
| 1988 | 20.0 | January 26 |
| 1987 | 7.0 | December 20 |
| 1986 | 19.0 | February 26 |
| 1985 | 15.0 | December 16 |
| 1984 | 8.0 | January 2 |
| 1983 | 10.0 | December 28 |
| 1982 | 13.0 | February 8 |
| 1981 | 3.0 | February 7 |
| 1980 | 3.0 | January 7 |
| 1979 | 27.0 | January 24 |
| 1978 | 11.0 | January 24 |
| 1977 | 11.0 | December 9 |
| 1976 | 12.0 | February 22 |
| 1975 | 9.0 | March 7 |
| 1974 | 7.0 | January 11 |
| 1973 | 9.0 | April 10 |
| 1972 | 10.0 | December 13 |
| 1971 | 19.0 | February 4 |
| 1970 | 11.0 | January 1 |
| 1969 | 18.0 | January 8 |
| 1968 | 15.0 | December 30 |
| 1967 | 9.0 | January 4 |
| 1966 | 12.0 | January 13 |
| 1965 | 17.0 | February 1 |
| 1964 | 7.0 | March 26 |
| 1963 | 13.0 | March 6 |
| 1962 | 26.0 | March 5 |
| 1961 | 13.0 | December 13 |
| 1960 | 8.0 | February 22 |
| 1959 | 28.0 | March 17 |
| 1958 | 4.0 | January 28 |
| 1957 | 5.0 | January 28 |
| 1956 | 12.0 | March 11 |
| 1955 | 7.0 | March 22 |
| 1954 | 13.0 | January 28 |
| 1953 | 3.0 | January 1 |
| 1952 | 10.0 | January 8 |
| 1951 | 27.0 | February 13 |
| 1950 | 16.0 | December 26 |
| 1949 | 14.0 | February 13 |
| 1948 | 11.0 | March 3 |
| 1947 | 18.0 | January 30 |
| 1946 | 12.0 | March 9 |
| 1945 | 19.0 | February 8 |
| 1944 | 8.0 | December 11 |
| 1943 | 20.0 | February 1 |
| 1942 | 18.0 | January 2 |
| 1941 | 9.0 | March 11 |
| 1940 | 16.0 | December 2 |
| 1939 | 9.0 | January 26 |
| 1938 | 10.0 | January 30 |
| 1937 | 9.0 | December 21 |
| 1936 | 20.0 | February 18 |
| 1935 | 10.0 | February 25 |
| 1934 | 8.0 | March 30 |
| 1933 | 17.0 | March 21 |
| 1932 | 6.0 | March 2 |
| 1931 | 10.0 | March 29 |
| 1930 | 12.0 | January 18 |
| 1929 | 22.0 | January 31 |
| 1928 | 7.0 | April 8 |
| 1927 | 8.0 | January 22 |
| 1926 | 10.0 | February 26 |
| 1925 | 5.0 | December 25 |
| 1924 | 8.0 | January 3 |
| 1923 | 9.0 | March 16 |
| 1922 | 7.0 | January 5 |
| 1921 | 6.0 | November 8 |
| 1920 | 12.0 | January 19 |
| 1919 | 8.0 | December 19 |
| 1918 | 21.0 | January 31 |
| 1917 | 24.0 | February 21 |
| 1916 | 10.0 | February 13 |
| 1915 | 16.0 | February 2 |
| 1914 | 6.0 | December 30 |
| 1913 | 8.0 | February 26 |
| 1912 | 1.0 | April 18 |
| 1911 | 7.0 | January 8 |
| 1910 | 29.0 | January 13 |
| 1909 | 16.0 | December 24 |
| 1908 | 14.0 | February 5 |
| 1907 | 8.0 | January 31 |
| 1906 | 10.0 | January 19 |
| 1905 | 23.0 | February 11 |
| 1904 | 11.0 | February 26 |
| 1903 | 10.0 | February 4 |
| 1902 | 5.0 | February 6 |
| 1901 | 7.0 | February 17 |
| 1899 | 9.0 | March 25 |
| 1898 | 8.0 | February 5 |
| 1897 | 11.0 | December 4 |
| 1896 | 4.0 | January 24 |
| 1894 | 5.0 | January 24 |
| 1893 | 9.0 | November 27 |
| 1892 | 7.0 | January 2 |
| 1890 | 14.0 | January 23 |
| 1889 | 21.0 | January 9 |
| Years | Station | Coordinates |
|---|---|---|
| 1889–2024 | Portage WWTP | location |