Comprehensive guide produced by GBIF (authors: Lento & Schmidt-Kloiber) specifically for publishing freshwater biodiversity data to the GBIF network. Covers the unique aspects of freshwater data that differ from terrestrial collections: sampling-event data structure using Event Core (recommended over Occurrence Core for monitoring data), freshwater-specific Darwin Core terms (waterBody, habitat, samplingProtocol), abundance and measurement data via the MeasurementOrFact extension, and handling repeated sampling at fixed sites. Discusses SASS biomonitoring, electrofishing surveys, benthic macroinvertebrate sampling, and water quality measurements in the Darwin Core context. Provides practical mapping examples for converting common freshwater monitoring datasets to DwC-A format. Essential reference for FBIS data managers and Incomati Basin monitoring practitioners.