| Year | Max Depth (inches) | Date |
|---|---|---|
| 2024 | 13.0 | March 24 |
| 2023 | 13.0 | March 4 |
| 2022 | 16.0 | February 5 |
| 2021 | 14.0 | February 23 |
| 2020 | 12.0 | February 8 |
| 2019 | 15.0 | January 21 |
| 2018 | 12.0 | February 10 |
| 2017 | 16.0 | March 15 |
| 2016 | 4.0 | January 30 |
| 2015 | 18.0 | February 23 |
| 2014 | 18.0 | March 14 |
| 2013 | 15.0 | January 1 |
| 2012 | 17.0 | December 31 |
| 2011 | 28.0 | February 9 |
| 2010 | 18.0 | January 5 |
| 2009 | 14.0 | January 29 |
| 2008 | 24.0 | December 22 |
| 2007 | 28.0 | February 15 |
| 2006 | 10.0 | March 4 |
| 2005 | 12.0 | March 13 |
| 2004 | 15.0 | February 4 |
| 2003 | 17.0 | December 15 |
| 2002 | 9.0 | February 1 |
| 2001 | 25.0 | March 6 |
| 2000 | 22.0 | February 19 |
| 1999 | 3.0 | November 30 |
| 1996 | 16.0 | January 16 |
| 1995 | 10.0 | February 28 |
| 1994 | 25.0 | January 18 |
| 1993 | 22.0 | February 22 |
| 1992 | 7.0 | February 15 |
| 1991 | 8.0 | January 12 |
| 1990 | 20.0 | January 13 |
| 1989 | 14.0 | December 21 |
| 1988 | 10.0 | February 13 |
| 1987 | 20.0 | January 31 |
| 1986 | 20.0 | February 23 |
| 1985 | 13.0 | February 6 |
| 1984 | 15.0 | December 7 |
| 1983 | 14.0 | January 18 |
| 1982 | 20.0 | March 8 |
| 1981 | 15.0 | December 22 |
| 1980 | 1.0 | January 22 |
| 1979 | 15.0 | January 31 |
| 1978 | 21.0 | January 25 |
| 1977 | 16.0 | February 25 |
| 1976 | 21.0 | January 12 |
| 1975 | 14.0 | December 26 |
| 1974 | 9.0 | December 26 |
| 1973 | 9.0 | January 31 |
| 1972 | 20.0 | February 26 |
| 1971 | 26.0 | March 11 |
| 1970 | 11.0 | March 5 |
| 1969 | 21.0 | January 7 |
| 1968 | 19.0 | January 28 |
| 1967 | 21.0 | January 2 |
| 1966 | 19.0 | December 31 |
| 1965 | 8.0 | January 3 |
| 1964 | 10.0 | December 5 |
| 1963 | 32.0 | March 2 |
| 1962 | 27.0 | February 24 |
| 1961 | 9.0 | March 9 |
| 1960 | none | – |
| 1959 | 19.0 | January 17 |
| 1958 | none | – |
| 1957 | none | – |
| 1956 | 22.0 | March 17 |
| 1955 | 14.0 | February 17 |
| 1954 | 20.0 | February 4 |
| 1953 | 7.0 | January 16 |
| 1952 | 18.0 | February 22 |
| 1951 | 16.0 | December 20 |
| 1950 | none | – |
| 1949 | 3.0 | March 12 |
| 1948 | none | – |
| 1947 | none | – |
| 1946 | none | – |
| 1945 | none | – |
| 1944 | none | – |
| 1943 | none | – |
| 1942 | 6.0 | January 5 |
| 1941 | none | – |
| 1940 | 4.0 | March 15 |
| 1939 | none | – |
| 1938 | none | – |
| 1937 | 2.0 | April 1 |
| 1936 | none | – |
| 1935 | 9.0 | January 1 |
| 1934 | none | – |
| 1933 | 9.0 | March 1 |
| 1932 | 8.0 | March 28 |
| 1931 | 20.0 | January 31 |
| 1930 | 5.0 | November 25 |
| 1929 | 4.0 | December 18 |
| 1928 | 4.0 | February 10 |
| 1927 | 4.0 | December 2 |
| 1926 | none | – |
| 1919 | none | – |
| 1916 | none | – |
| 1915 | none | – |
| 1911 | none | – |
| 1909 | 15.0 | February 10 |
| 1907 | 10.0 | April 10 |
| 1905 | none | – |
| 1902 | 1.0 | January 28 |
| Years | Station | Coordinates |
|---|---|---|
| 1886–2024 | Cornwall | location |