The Casco Bay/Lower Androscoggin (CBLA) watershed extends from the sea to Sebago Lake via the Lower Presumpscot River, and up the Lower Androscoggin River to Lewiston and Bethel, where the western edge of the watershed is truncated at the New Hampshire state line. The CBLA watershed encompasses almost 2 million acres of Maine and is home to 473,000 people, or 36% of Maine residents. Almost 10% of this watershed is protected from development by conservation easement, conservation non-profit ownership, or public ownership. Changes in land use within the Casco Bay/Lower Androscoggin watershed include urbanization near Portland and Lewiston, and second home/vacation home development and forest management activities near Bethel, Sebago Lake, and Bridgeport.

To view aerial photos of the CBLA, launch the Mapper or view them in our Picasa web album.

aerial photo of Portladn

Portland’s working waterfront and commercial district are situated at the southern end of the CBLA watershed.
(Photo by Pam Wells)