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Imagery data for the Vegetation Mapping Inventory Project of Fort Union Trading Post National Historic Site

Published by National Park Service | Department of the Interior | Metadata Last Checked: January 25, 2026 | Last Modified: 2002-03-01T00:00:00Z
This reference contains the imagery data used in the completion of the baseline vegetation inventory project for the NPS park unit. Orthophotos, raw imagery, and scanned aerial photos are common files held here. The aerial photo contract to Horizons, Incorporated of Rapid City, South Dakota was for the acquisition of color aerial photography for FOUS and vicinity using 1:12,000 scale photography typically used for photointerpretation. The project area is covered by 9 1:12,000 scale aerial photographs. (Figure 9) printed on 9"x9" stock. Overlap for these photos were approximately 50-60% and sidelap between flight lines was approximately 20-30%.

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