USGS Product. They can be either color (true or false color) or black and white.
This is a digital air photo, which has been geometrically corrected (ortho-rectified). When storage was limited, they were ¼ of a 7½ minute quadrangle.
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USGS Product. They can be either color (true or false color) or black and white. This is a digital air photo, which has been geometrically corrected (ortho-rectified). When storage was limited, they were ¼ of a 7½ minute quadrangle. |
Last revision 10/31/2011