Contact Kerstin Stelzer at kerstin.stelzer@brockmann-consult.de as owner of satellite data. In situ measures are publicly available at www.waterqualitydata.us; https://dec.vermont.gov/watershed/lakes-ponds/monitor/lake-champlain; and https://lter.limnology.wisc.edu/. Portions of this dataset are inaccessible because: Satellite data is property of Brockmann Consult. They can be accessed through the following means: Contact Kerstin Stelzer at kerstin.stelzer@brockmann-consult.de as owner of satellite data. Format: www.waterqualitydata.us;

This dataset is associated with the following publication: Schaeffer, B., W. Salls, M. Coffer, C. Lebreton, M. Werther, K. Stelzer, E. Urquhart, and D. Gurlin. Merging of the Case 2 Regional Coast Colour and Maximum-Peak Height chlorophyll-a algorithms: validation and demonstration of satellite-derived retrievals across US lakes. ENVIRONMENTAL MONITORING AND ASSESSMENT. Springer, New York, NY, USA, 194: 179, (2022).