sebago lake buoy

Sebago Lake Monitoring Buoy

For data, click here: 

2019: Dissolved Oxygen | Temperature

2018: Dissolved Oxygen | Temperature

Sebago Lake Monitoring Data 

For more data and to download an app for your phone, click the link above.

The Sebago Lake Monitoring Buoy is a real-time data buoy located in Sebago Lake’s Lower Bay.  It records and wirelessly transmits data on temperature, dissolved oxygen, chlorophyll (a measure of algae in the lake), and water clarity to the internet.  These data are studied by PWD scientists and Saint Joseph’s College of Maine researchers, professors, and environmental science students.   The buoy was partially funded by a Water Resources Sustainability Research Grant from the University of Maine.  Saint Joseph’s College and the Portland Water District applied for and received the grant to support sustainable water resource management, lake research, undergraduate research training, and community engagement.

These real time data are provided to the public for your convenience and to raise awareness about the physical and ecological dynamics of Sebago Lake.  Due to real-time transmission, data are preliminary and have not yet been reviewed by our scientists.  To report anomalies or concerns with the data, contact our Source Protection Coordinator, Chad Thompson, at



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