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GRASS Help System |
Private companies generally do not have comprehensive production and distribution programs like those of the DMA and USGS. However, the private sector is a viable source for obtaining elevation data for many geographic areas, at higher resolutions (if desirable) than are available from the DMA and USGS, in a brief time period. Although many companies undoubtedly can provide elevation data, we have thus far primarily contacted the two firms below for information. Please contact others as well.