Help Protect
Maine Lakes

Volunteer Leaders & Coordinators

Volunteers who monitor their lakes are essential to fulfilling the mission of the Lake Stewards of Maine (LSM). Many volunteers also play a critical role in administrative and leadership positions.

Water Quality Volunteer Coordinators

Regional and data coordinators help maintain the high standards of quality control and quality assurance that makes LSM data scientifically creditable.

Invasive Plant Patrol Leaders

IPP Leaders provide technical and quality assurance checks at local and regional levels, help to recruit and train volunteer plant patrollers, organize IPP teams, and conduct a variety of activities that result in improved program growth, efficiency, and sustainability.


Our Mission

The Mission of the Lake Stewards of Maine (LSM) is to help protect Maine lakes through widespread citizen participation in the gathering and dissemination of credible scientific information pertaining to lake health. LSM trains, certifies and provides technical support to hundreds of volunteers who monitor a wide range of indicators of water quality, assess watershed health and function, and screen lakes for invasive aquatic plants and animals. In addition to being the primary source of lake data in the State of Maine, LSM volunteers benefit their local lakes by playing key stewardship and leadership roles in their communities.


LSM is a non-profit 501(c)(3) organization committed to the collection of information pertaining to lake water quality. For 50 years, trained volunteers throughout Maine have donated their time so that we may all learn more about one of Maine’s most beautiful and important resources — our lakes.