Collated for the purposes of intercalibrating the outputs of the Central Baltic GIG WFD lakes macrophyte classification tools. Includes data from a large number of lakes across the GIG region, provided by the participating countries. Macophyte data is provided along with typological information and raw physic-chem data. Note that not all the data from this dataset will be made available to BioFresh science work packages or the data portal. More information on this dataset can be found in the Freshwater Metadatabase - BFE_35 (http://www.freshwatermetadata.eu/metadb/bf_mdb_view.php?entryID=BFE_35).