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A. NED 1/9 arc second (~ 3 meter resolution)is processed and assembled the same as the NED 1 and 1/3 arc second, but the source data is using mostly LIDAR elevation data sources. There is very little coverage at this time with LIDAR. As new LIDAR data sources are received and processed, then new NED 1/9 arc second areas will be added to the database.
