Since 2008, the dam committee has recorded water level and activity every time they visit the dam. They also record ice out when they begin to close the gate. Earlier ice out dates are from a Watchic Lake property owner. Ice-out is generally determined when the lake becomes clear of ice in the spring.

• April 24, 1967
• April 7, 1968
• April 20, 1969
• April 15, 1970
• April 28, 1971
• April 26, 1972
• April 26, 1973
• March 18, 1974
• April 19, 1975
• April 4, 1976
• April 4, 1977
• April 22, 1978
• April 18, 1979
• April 1, 1986
• April 2, 1999
• April 24, 2001
• April 20, 2008
• April 10, 2009
• March 9, 2010
• April 17, 2011
• March 19, 2012
• April 10, 2013
• April 16, 2014
• April 12, 2015
• March 13, 2016
• April 12, 2017
• April 22, 2018
• April 16, 2019
• March 23, 2020
• March 27, 2021
• March 28, 2022
• April 6, 2023
• March 8, 2024 (noted as earliest ever seen by the recorders)