Geospatial and temporal records of NRDC state reported HAB events and state recreational advisories with matching MERIS and Setninel-3 satellite data. This dataset is associated with the following publication: Whitman, P., B. Schaeffer, W. Salls, M. Coffer, S. Mishra, B. Seegers, K. Loftin, R. Stumpf, and P.J. Werdell. A validation of satellite derived cyanobacteria detections with state reported events and recreation advisories across U.S. lakes. Harmful Algae. Elsevier B.V., Amsterdam, NETHERLANDS, 115: 102191, (2022).