Lake Vida is one of the largest lakes in the McMurdo Dry Valley region and is a closed-basin endorheic lake. The permanent surface ice on the lake is the thickest non-glacial ice on earth, reaching a depth of at least 21 metres (69 ft).
People Also Ask
Ice is seldom the same thickness over a single body of water; it can be two feet thick in one place and one inch thick a few yards away.
Ice formed over flowing water and currents is often dangerous. This is especially true near streams, bridges, and culverts. Also, the ice on outside river bends, and inlets and outlets of lakes and ponds is usually weaker due to the undermining effects of the faster current.
Great Lakes that have completely frozen include Lake Superior, Lake Huron, Lake Erie, and Lake Ontario. Lake Michigan is the only Great Lake to have never frozen entirely.
During some really cold winters, some lake ice can be as much as six feet thick! In winter most fish spend their time near bottom, where the food and warmest (39.2°F) water lies.
Avoid ice over the fastest current of moving water. Spots where streams enter and leave lakes are notorious for thin ice. Springs bringing water into a lake may create a thin spot that the locals should know about. Wind-scoured ice tends to be weaker than sheltered ice.