The Working Groups of SIL
- Working Group on Plankton Ecology (PEG)
- Working Group on Deep Coring Operations and Paleolimnological Work on Relict Lakes
- Working Group on Microbial Activities and the Carbon Cycle in Fresh Waters
- Working Group on Periphyton of Freshwater Ecosystems
- Working Group on Wetlands
- Working Group on Aquatic Primary Productivity (GAP)
- Working Group on African Great Lakes
- Working Group on Aquatic Radioecology
- Working Group on Biological Monitoring
- Working Group on Conservation and Management of Running Waters
- Working Group on High Latitude Lakes and Rivers
- Working Group on Aquatic Birds
- Working Group on Saline Inland Waters
- Working Group on Biodiversity
- Working Group on Physical Limnology