Unity Pond (aka Lake Winnecook), in Waldo County, Maine
"The ice went out of Unity Pond on March 23. This is only the fourth March ice-out in the last 42 years, according to records of the Friends of Lake Winnecook (aka Unity Pond) and the Maine Bureau of Parks and Lands. It usually happens around mid-April. The earliest ice-out since 1970 was March 5, 1981. The latest was May 1, 1971, with April 30, 1972, a close second. The other two March ice-outs were in 2010 (the 18th) and 2006 (the 31st)."
Read the article and thanks to Dana Wilde and the Amateur Naturalist column in the Bangor Daily News in Bangor, Maine.