| Year | Max Depth (cm) | Date |
|---|---|---|
| 2024 | 30.0 | January 21 |
| 2023 | 24.0 | February 28 |
| 2022 | 34.0 | January 9 |
| 2021 | 22.0 | January 1 |
| 2020 | 25.0 | December 31 |
| 2019 | 32.0 | March 7 |
| 2018 | 50.0 | February 24 |
| 2017 | 45.0 | February 5 |
| 2016 | 30.0 | January 17 |
| 2015 | 51.0 | January 6 |
| 2014 | 10.0 | December 29 |
| 2013 | 45.0 | January 9 |
| 2012 | 33.0 | December 23 |
| 2011 | 52.0 | January 13 |
| 2010 | 32.0 | December 12 |
| 2009 | 72.0 | January 6 |
| 2008 | 73.0 | February 10 |
| 2007 | 68.0 | January 23 |
| 2006 | 46.0 | December 27 |
| 2005 | 46.0 | January 17 |
| 2004 | 38.0 | January 30 |
| 2003 | 28.0 | November 25 |
| 2002 | 32.0 | January 1 |
| 2001 | 52.0 | December 14 |
| 2000 | 42.0 | January 17 |
| 1999 | 37.0 | January 18 |
| 1998 | 49.0 | December 28 |
| 1997 | 64.0 | January 1 |
| 1996 | 68.0 | December 31 |
| 1995 | 33.0 | November 8 |
| 1994 | 28.0 | December 17 |
| 1993 | 87.0 | January 25 |
| 1992 | 72.0 | December 21 |
| 1991 | 41.0 | January 11 |
| 1990 | 34.0 | February 1 |
| 1989 | 42.0 | January 12 |
| 1988 | 45.0 | February 9 |
| 1987 | 47.0 | January 28 |
| 1986 | 52.0 | February 22 |
| 1985 | 52.0 | February 11 |
| 1984 | 38.0 | January 22 |
| 1983 | 55.0 | January 7 |
| 1982 | 78.0 | January 26 |
| 1981 | 22.0 | December 30 |
| 1980 | 41.0 | December 22 |