text: There's a map in the link below. However, it doesn't show Alaska and Hawaii. \n\nYou'll see that most of Florida and many other areas in the southeast will be underwater. If all of the ice caps melted, the oceans would rise 215 feet. Since the mean elevation of the United States is about 2500, most of the United States will still be dry. In fact, 21 states would be completely high and dry, as their lowest elevation is greater than 215 feet.\n\nColorado 3,350 feet, lowest point\nWyoming 3,099\nNew Mexico 2,842\nUtah 2,000\nMontana 1,800\nSouth Dakota 966\nNebraska 840\nNorth Dakota 750\nIdaho 710\nKansas 679\nMinnesota 600\nWisconsin 579\nMichigan 572\nIowa 480\nNevada 479\nOhio 455\nIndiana 320\nOklahoma 289\nIllinois 279\nKentucky 257\nWest Virginia 240\nMissouri 230\n\nSome things to note: ice has been melting for 18,000 years, as we are still coming out of the last ice age. At the peak of the ice age, ice volume was ~80,000,000 km3. It is now ~30,000,000 km3. So, it has taken 18,000 years to melt to melt ~50,000,000 km3 of ice. And, it would take thousands of years more to melt the remaining ~30,000,000 km3 of ice, especially when you consider most of the ice is at the very cold south pole.\n \nBy the way, the melting of this ice over the past 18,000 years has been NATURAL. In fact, at times during the past 18,000 years, the rate of ice melting has been much greater than it is now.