| Year | Max Depth (cm) | Date |
|---|---|---|
| 2024 | 14.0 | January 8 |
| 2023 | 64.0 | March 4 |
| 2022 | 62.0 | December 25 |
| 2021 | 49.0 | February 23 |
| 2020 | 33.0 | February 11 |
| 2019 | 51.0 | February 13 |
| 2018 | 30.0 | February 11 |
| 2017 | 38.0 | February 16 |
| 2016 | 26.0 | November 23 |
| 2015 | 68.0 | February 22 |
| 2014 | 74.0 | February 15 |
| 2013 | 44.0 | January 7 |
| 2012 | 48.0 | December 30 |
| 2011 | 47.0 | February 6 |
| 2010 | 54.0 | January 14 |
| 2009 | 66.0 | January 31 |
| 2008 | 63.0 | March 9 |
| 2007 | 58.0 | December 17 |
| 2006 | 33.0 | January 10 |
| 2005 | 37.0 | March 2 |
| 2004 | 40.0 | December 14 |
| 2003 | 44.0 | March 9 |
| 2002 | 38.0 | March 27 |
| 2001 | 38.0 | February 1 |
| 2000 | 56.0 | February 16 |
| 1999 | 48.0 | January 16 |
| 1998 | 42.0 | January 24 |
| 1997 | 35.0 | February 5 |
| 1996 | 44.0 | January 10 |
| 1995 | 40.0 | December 21 |
| 1994 | none | – |
| 1993 | none | – |
| 1992 | none | – |
| 1991 | none | – |
| 1988 | 42.0 | February 12 |
| 1987 | 10.0 | December 17 |
| 1985 | none | – |
| 1984 | none | – |
| 1983 | none | – |