The U.S. Army Corps of Engineers is warning people to stay off the ice at Saylorville Lake because of unsafe conditions.
The Corps says the recent flip-flopping of temperatures combined with low lake levels have made some areas of the lake dangerous. Large areas of open water on the lake have re-frozen with the current frigid temperatures but there may only be a thin layer of ice on top of the water. The appearance of solid ice can be deceiving.
Ice fishermen, snowmobilers, skaters, skiers, and pedestrians are advised to stay off of the lake.
The level of water underneath the ice is also dropping at a rate of about a foot a month, which can also cause dangerous conditions.
The lake level is almost six feet below normal conditions.