Farm Pond is a “kettle” lake, meaning it was formed by the melting remnant of one of the glaciers that departed from New England more than 12,000 years ago. The pond is about 58 feet at its deepest and covers about 125 acres. Farm Pond has no major stream tributary, so its surrounding watershed land area is quite small relative to the size of the lake, helping to maintain excellent water quality most years. The terms "oligotrophic" and "mesotrophic" refer to trophic states (relative nutrient levels), and have nothing to do with geological periods.