| Year | Max Depth (cm) | Date |
|---|---|---|
| 2024 | 22.0 | March 7 |
| 2023 | 27.0 | January 27 |
| 2022 | 29.0 | January 8 |
| 2021 | 16.0 | April 13 |
| 2020 | 5.0 | November 16 |
| 2019 | 19.0 | February 13 |
| 2018 | 20.0 | March 10 |
| 2017 | 24.0 | January 10 |
| 2016 | 19.0 | December 6 |
| 2015 | 19.0 | February 21 |
| 2014 | 23.0 | March 8 |
| 2013 | 45.0 | March 24 |
| 2012 | 17.0 | November 11 |
| 2011 | 50.0 | January 22 |
| 2010 | 38.0 | January 6 |
| 2009 | 59.0 | January 16 |
| 2008 | 31.0 | February 14 |
| 2007 | 28.0 | March 2 |
| 2006 | 21.0 | December 6 |
| 2005 | 42.0 | January 9 |
| 2004 | 71.0 | February 16 |
| 2003 | 30.0 | April 7 |
| 2002 | 19.0 | December 29 |
| 2001 | 62.0 | January 1 |
| 2000 | 62.0 | December 28 |
| 1999 | 42.0 | January 27 |
| 1998 | 39.0 | March 2 |
| 1997 | 71.0 | January 29 |
| 1996 | 63.0 | December 30 |
| 1995 | 31.0 | January 18 |
| 1994 | 74.0 | February 24 |
| 1993 | 26.0 | January 24 |
| 1992 | 17.0 | December 30 |
| 1991 | 30.0 | January 8 |
| 1990 | 29.0 | December 28 |
| 1989 | 55.0 | January 7 |
| 1988 | 27.0 | December 26 |
| 1987 | 7.0 | February 2 |
| 1986 | 14.0 | February 19 |
| 1985 | 29.0 | February 13 |
| 1984 | 15.0 | January 16 |
| 1983 | 30.0 | January 6 |
| 1982 | 37.0 | February 7 |
| 1981 | 20.0 | December 28 |
| 1980 | 12.0 | December 25 |