Presumpscot Watershed Initiative

Geospatial Database

Instructions: click on any of the numbered sites
on the map above to view details and photos.

Piscataqua River Watershed


The Piscataqua River watershed extends east and west of Route 100 and the Maine Turnpike from Falmouth to Gray. It extends into the towns of Cumberland and Windham.


The Piscataqua River watershed is approximately 21 square miles; it makes up 10% of the Presumpscot River watershed system.


The population of Piscataqua watershed is a just over 4,000, or approximately 6% of the population in the Presumpscot River watershed system.

Impervious Surfaces:

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 8% of the Piscataqua watershed, more than 1,000 acres, is comprised of impervious surfaces.

Return to Presumpscot River Watershed Overview Map

Sonde 2 Info BMP 60 Info BMP 54 Info BMP 52 Info BMP 53 Info BMP 55 Info BMP 112 Info BMP 113 Info BMP 56 Info Return to Presumpscot River Watershed