Florida River in Germany KelsterLocationCountryGermanyStatesHessePhysical characteristicsMouth • locationMain • coordinates50°03′59″N 8°31′42″E / 50.06639°N 8.52833°E / 50.06639; 8.52833Basin featuresProgressionMain→ Rhine→ North Sea Kelster is a small river of Hesse, Germany. It flows into the Main in Kelsterbach. See also List of rivers of Hesse