Brian Obbink, of nearby Oostburg, and his 9- and 6-year-old daughters were skating on the football-field size pond Friday morning when 9-year-old Megan fell through, Sheboygan County sheriff's Sgt. Doug Tuttle said in a news release.
The father fell in while apparently trying to rescue her, Tuttle said. The 6-year-old then ran to a nearby residence and someone called 911 at about 11:30 a.m., Tuttle said.
When deputies and the girl returned to the pond, the father and other girl were missing, Tuttle said.
The Sheboygan County Law Enforcement Dive Team found the two bodies Friday afternoon, Tuttle said.
A person who answered the phone at the Obbink home Friday evening said the family did not want to comment.
The pond is 8 to 10 feet deep and the ice was less than 3 inches thick.
Neighbor Bill Schreiber said the brother-in-law of Brian Obbink owns the adjacent farmland and used to own the land the pond is on, but he sold it to the city.