Attention THELMA fans: Our real-time broadcast is back online HERE - enjoy!


The Harp Environmental Lake Monitoring Ark (THELMA for short) was deployed in the summer of 2010 on Harp Lake. The most recent data are available in the plots below. We thank the Harp Lake Association for their input into THELMA's design and for their support over the first years of operation. Please note that these data are provided "as is" as we have not yet verified their accuracy.

THELMA is part of the Global Lake Ecological Observatory Network. GLEON is a world-wide grassroots network of people, institutions, programs, and data dedicated to understanding, predicting, and communicating the impact of natural and anthropogenic influences on lakes.


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Deployed to gather high-frequency water quality and meteorology data for investigations of aquatic ecosystem function.