The Iowa Great Lakes (East and West Okoboji Lakes and Big Spirit Lake) in northwest Iowa
"Perhaps unsurprisingly given the late-season winter weather, the ice managed to hang around quite a bit later than usual at the Iowa Great Lakes this spring.
Jonathan Meerbeek, a research biologist with the Iowa Department of Natural Resources, said the ice at West Okoboji Lake, East Okoboji Lake and Big Spirit Lake did not officially melt until Sunday.
The late retreat of the lake ice breaks a record that dates back to 1951, when East Okoboji saw its ice disappear April 26, while West Okoboji and Big Spirit saw their ice leave April 28.
Normally, the ice would be gone by the first week or two of April. Kirk Ewen, a longtime Iowa Great Lakes ice watcher, said the ice has melted as early as the first week of March in some cases. "