A Chicago man said he used maps, advice from experts and math to calculate he has shoveled more than 25 tons of snow since the start of winter. Matthew Walberg wrote in the Chicago Tribune he is the sole shovel-slinger in his household and he used a free maps tool to calculate he is responsible for clearing snow from 1,944 square feet with each fresh snowfall. Walberg said he consulted with Jamie Enderlen, a meteorologist with the National Weather Service in Chicago, to determine the approximate weight of the snow using data from the water content of each snowfall since the start of the season. Walberg said approximately 75.2 inches of snow have fallen on his property this winter, the equivalent of an estimated 5.01 inches of water. He said his final calculations revealed he has shoveled an estimated 50,645 pounds of snow this winter, more than 25 tons. "It's definitely something to say that you've done, but I'm thinking that the people in North Dakota or South Dakota where they have blizzards will just laugh at us," Enderlen said. "They'll be like, 'Really?'"