The real answer is the oceans would rise about 25 inches if the glacier is now 100% on dry land, and the size estimates are accurate. Glacier Volume/Ocean Surface Area.
(74,00 sq mi * 4000 ft)/139,000,000 sq mi = 25.5 inches
The volume of the glacier is massive; 47 times the volume of Lake Michigan. The world’s most powerful pumps, those protecting New Orleans can move 150,000 gallons per second. Any guesses as to how long it would take one of these pumps to empty Lake Michigan?
Any guesses as to how long it would take one of these pumps to empty Lake Michigan?
Almost 6600 years!