Highland Lake Association


Falmouth, Windham, Westbrook

PO Box 1684

Windham, Maine 04062


The Highland Lake Association (HLA) is a registered 501(3)(c) non-profit organization, started in 1989. Our organization is staffed by volunteers from around the lake and is supported by our member dues.
Our mission is to preserve, enhance, and protect the natural resources of Highland Lake and its watershed.

When the water is even with the top of the spillway at the dam, it is at 190.6 feet above sea level. This is considered 0" for water level purposes. A negative number indicates water level below the crest of the dam, while a positive number shows water going over the crest of the dam.



Secchi disk measurements are one of the simplest ways to measure a lake's water quality. The clearer and more transparent the lake water, the less silt, algae and other particulate we have. By slowly lowering a plain black and white, circular disk into the water we can visually measure water transparency. The disk is mounted on a measuring tape, and lowered into the water until the disk is no longer visible.



In 2021 Highland Lake measured some of the best water clarity we have seen in the last decade. The blue line above shows the depth below the surface the Secchi disk is visible as compared to previous years. Learn more here.

Our mission is to preserve, enhance, and protect
the natural resources of Highland Lake and its watershed.


Support the HLA

Join us on Facebook

Sign up for the Newsletter

Contact Us