This study used active microwave observations from Radarsat satellite imagery, optical Landsat images, and LiDAR topography data to map flooded areas in Apalachicola, Florida at different tides. The multi-temporal Radarsat imagery clearly showed flooded and non-flooded pixels during high and low tides. Comparison to historical aerial photographs found good agreement, demonstrating potential for remote sensing to monitor coastal flooding, improve inundation models, and guide hydrodynamic simulation of wetting/drying processes. Future work will extend this approach across the northern Gulf of Mexico coast.