Landscape variability and phosphorus (P) concentrations in floodplain and stream bank area soils can affect the fate and transport of P. We are currently characterizing P availability in some floodplain soils of major extent along two stream corridors in Vermont. The objective is to determine if P levels vary significantly with depth and among soil series. Samples were taken every 15 cm to a depth of 105 cm from ten soil series and analyzed for total (nitric acid digestion) and plant-available P (ammonium acetate). Results show that available P did not tend to vary significantly with depth, but there were some significant differences among series. Total soil P tended to decrease with depth and was significantly correlated with available P and organic matter content. Results suggest that a more detailed delineation of soil-landscape variability and P levels in floodplain areas could be important for improving P management in the corridors.