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Imagery data for the Vegetation Mapping Inventory Project of El Morro National Monument

Published by National Park Service | Department of the Interior | Metadata Last Checked: January 25, 2026 | Last Modified: 2010-08-01T00:00:00Z
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. Photointerpretation was done using 9 × 9-in, 1:12,000-scale, true-color photographs. Mylar overlays placed on each aerial photo allowed the project team to make notes and delineate polygons. At this stage of interpretation, a stereoscope was used to help recognize complex photo signatures and three-dimensional features. No attempt was made to label polygons at the initial stage of photointerpretation. Polygons were delineated using homogenous ground features as a mappable unit. These drawn polygons were later revisited after field-data collection in order to assign a map unit and other polygon attributes.

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