Jeffrey Linn’s maps look like normal maps, until you deep dive into their detail. Vancouver’s Stanley Park is underwater, as is the Seattle Space Needle and much of the San Diego coastline. Linn’s representations of seven cities in the United States and Canada portray how they would look if all the world’s ice caps melted and sea levels rose more than 200 feet.

“The sea level rise that the [U.S. Geological Survey] has predicted [in the most extreme scenario possible] is about 260 feet, or 80 meters. And so any of the maps that I’ve made will be at that level or lower,” Linn told weather.com. “Some of the cities that I’ve been looking at … if everything were to melt just become vast sheets of blue. That doesn’t make a very interesting map.”

(MORE: )

Montreal, for example. At the full 260 feet of oceans rising, the city nearly disappears, with Mont Royal just peeking above the waters. So instead, Linn chose to create the map at about 130 feet of sea level rise. “It creates a really interesting series of islands,” he said.

It’s grim to think about the majority of the world’s ice caps melting. The sea level rise Linn refers to comes from should Antarctic and Greenland ice sheets disappear. “Complete melting of these ice sheets could lead to a sea level rise of about 80 meters,” the USGS reported, “whereas melting of all other glaciers could lead to a sea level rise of only one-half meter.”

In some places, if warming continues at its current pace, glaciers will disappear altogether within a couple hundred years, according to the USGS. “All glaciers will be gone from Glacier National Park, Montana, by the middle of the next century.” Forty percent of Iceland’s glaciers will melt by 2100, and in another century the rest will go.

(MORE: )

Linn attempts with his maps to hammer home this point — but not in a preachy sort of way. Rather, he aims to bring a touch of levity, particularly with what he calls the new land masses. “A lot of places get named after current places,” he said. “If something is a hill, it gets named to an island. Neighborhoods on high ground get named islands after the existing neighborhood. I just try to be playful with it.”

Yet he also acknowledges the seriousness of the situation. “My take is to really show an extreme endpoint. None of these scenarios are going to happen in anybody’s lifetime, anybody who is living now. I just want to show what will the world look like, what will our cities look like at that end point, several thousand years in the future,” he added. “I think it gets people’s attention.”

The Seattle-based cartographer and geographer has several more maps in the works, including one of New York City. For more of his work, visit .

MORE FROM WEATHER.COM: Photos of Maryland Towns Sinking

Water spills onto Hoopers Island Road, up the coast from Crisfield, Maryland, during high tide. The bay is a foot deeper than it was at the start of the 20th century, meaning that storm surges are higher and land in the region is sinking. (© 2013 Greg Kahn)