This flood map shows a comparison of the flood data collected by AVHRR (pink pixels), Radarsat (red pixels), and Landsat 7 (green pixels). These colors show areas that were flooded in the wake of Hurricane Floyd. Due to interference from clouds and forest canopies, geographers often get the best insight into a flood when they use data from multiple satellite sensors. (Image courtesy Dartmouth Flood Observatory, E. Anderson and R.H. Brakenridge)

http://earthobservatory.nasa.gov/Study/FloydSediment/sediment_2.html archive copy at the Wayback Machine - a larger image is available; the smaller image is preferred here because the text is larger

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