| Year | Max Depth (cm) | Date |
|---|---|---|
| 2024 | 15.0 | January 17 |
| 2023 | 40.0 | January 31 |
| 2022 | 24.0 | December 18 |
| 2021 | 48.0 | February 20 |
| 2020 | 27.0 | March 1 |
| 2019 | 35.0 | February 21 |
| 2018 | 33.0 | January 5 |
| 2017 | 53.0 | March 15 |
| 2016 | 30.0 | January 4 |
| 2015 | 41.0 | February 22 |
| 2014 | 36.0 | March 28 |
| 2013 | 40.0 | January 7 |
| 2012 | 40.0 | December 30 |
| 2011 | 8.0 | November 24 |
| 2010 | 28.0 | January 4 |
| 2009 | 50.0 | January 29 |
| 2008 | 70.0 | March 10 |
| 2007 | 60.0 | December 17 |
| 2006 | 30.0 | January 11 |
| 2005 | 25.0 | March 9 |
| 2004 | 50.0 | February 4 |
| 2003 | 70.0 | March 9 |
| 2002 | 33.0 | November 18 |
| 2001 | 71.0 | March 23 |
| 2000 | 50.0 | February 15 |
| 1999 | 40.0 | January 15 |
| 1998 | 7.0 | December 30 |
| 1997 | 45.0 | February 15 |
| 1996 | 31.0 | January 1 |
| 1995 | 40.0 | December 22 |
| 1994 | 52.0 | February 25 |
| 1993 | 60.0 | March 15 |
| 1992 | 45.0 | March 2 |
| 1991 | 37.0 | January 31 |
| 1990 | 58.0 | January 17 |
| 1989 | 63.0 | December 27 |
| 1988 | 42.0 | February 14 |
| 1987 | 83.0 | March 3 |
| 1986 | 55.0 | March 10 |
| 1985 | 35.0 | March 6 |
| 1984 | 51.0 | January 31 |
| 1983 | 35.0 | December 29 |
| 1982 | 82.0 | March 10 |
| 1981 | 46.0 | December 29 |
| 1980 | 24.0 | December 25 |
| 1963 | 102.0 | March 12 |
| 1962 | 79.0 | December 31 |
| 1961 | 51.0 | March 15 |