DOQQ stands for the Digital Orthoquarter Quads, and they are georectified raster images developed from aerial photographs. This DOQQ illustrates a 500 year floodplain which can be seen by the river shown and the surronding areas in red. The main interest of the map is to show what the 500 year flood plain is and what it covers. A DOQQ can be produced as a false color infrared photo, and by doing this it will help to show the different surface features of an area shown.
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