North Branch Little River Watershed
The North Branch Little River watershed is located in western corner of Gorham, and extends into Standish and Buxton.
The North Branch Little River watershed is approximately 20 square miles; it makes up 10% of the Presumpscot River watershed system.
The population of the Little Sebago / Ditch Brook watershed is a just over 4,000, or approximately 6% of the population in the Presumpscot River watershed system.
Impervious surfaces are those surfaces in the landscape that cannot infiltrate rainfall, such as rooftops, pavement, sidewalks, driveways and compacted earth. Impervious surface areas of 10% or greater are often correlated with reduced water quality. Approximately 6% of the North Branch Little River watershed, more than 750 acres, is comprised of impervious surfaces.