Newfound Lake draws a captive audience year after year. Its mystique is nothing new. Frank Roche, President of Roche Realty Group, mentioned to me that when he was doing a high school project on Newfound Lake in the 1960’s, it was called one of the cleanest lakes in the country by National Geographic. Today, it is still considered to be one of the cleanest in the world.

Newfound is the 5th largest lake in New Hampshire. It encompasses 4,106 acres with 22 miles of shoreline and is...