The Songo River in Naples is one of Maine’s busiest waterways. It is 3.1 miles long and connects Long Lake and Brandy Pond with Sebago Lake. The Songo Lock separates the upper and lower portions of the river and is the only operational lock remaining of the Cumberland and Oxford Canal. The lock was completed two years before the town of Naples was incorporated in 1834.
The Songo River is infested with variable leaf milfoil. The extent of the well-established infestation in the river was documented by LEA in 2003. LEA found milfoil in Brandy Pond in 2004, which had appeared clean after a Maine DEP survey a few years earlier. After more than a decade of extensive work on the river, the section above the lock is functionally clear of milfoil and requires only periodic removal of scattered new growth. The section below the lock is regularly cleared of milfoil, but still has persistent regrowth that we address every year.
Learn more about our milfoil control work below.
