SFS Annual Meeting | Society for Freshwater Science, 2021 SFS - Philadelphia, Pennsylvania, USA The 2021 Annual Meeting of the Society for Freshwater Science will take place in Philadelphia, Pennsylvania, USA. More information coming soon. Previous Meetings The Society was founded as the Midwest Benthological Society by 13 charter members at Havana, Illinois, in the spring of 1953. Since then, the Society has met annually at locations across North America.See a complete list of previous meetings.