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. A total of 44 map classes were developed to map the vegetation and general land cover of CUVA, including the following: 29 map classes represent natural/semi-natural vegetation types in the NVCS, 12 map classes represent cultural vegetation (agricultural and developed) in the NVCS, and 3 map classes represent non-vegetation features (open-water bodies). Features were interpreted from viewing color-infrared digital aerial imagery dated October 2010 (during peak leaf-phenology change of trees) via digital onscreen three-dimensional stereoscopic workflow systems in geographic information systems (GIS). The interpreted data were digitally and spatially referenced, thus making the spatial database layers usable in GIS. Polygon units were mapped to either a 0.5 ha or 0.25 ha minimum mapping unit, depending on vegetation type.

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. Vegetation and land use were interpreted to as detailed a level as possible from high-resolution, 9” x 9” stereo pairs of 1:12,000-scale true color aerial photography. Polygons representing vegetation or land use map classes were delineated on Mylar overlays on aerial photographs (where signatures were confusing) and with the heads-up digitizing technique (where signatures had high contrast), then transferred to a spatial database. The project used the national program standard minimum mapping unit of 0.5 ha with few exceptions.

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. Vegetation and land use were interpreted to as detailed a level as possible from high-resolution, 9” x 9” stereo pairs of 1:12,000-scale true color aerial photography. Polygons representing vegetation or land use map classes were delineated on Mylar overlays on aerial photographs (where signatures were confusing) and with the heads-up digitizing technique (where signatures had high contrast), then transferred to a spatial database. The project used the national program standard minimum mapping unit of 0.5 ha with few exceptions.

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. Vegetation and land use were interpreted to as detailed a level possible from high-resolution, 9” x 9” stereo pairs of 1:12,000-scale true color aerial photography. Polygons representing vegetation or land use map classes were delineated directly on-screen through heads-up digitizing using ArcGIS editing tools and transferred to a spatial database. The project used the program standard minimum mapping unit of 0.5 ha with few exceptions.

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. Vegetation and land use were interpreted to as detailed a level possible from high-resolution, 9” x 9” stereo pairs of 1:12,000-scale true color aerial photography. Polygons representing vegetation or land use map classes were delineated directly on-screen through heads-up digitizing using ArcGIS editing tools and transferred to a spatial database. The project used the program standard minimum mapping unit of 0.5 ha with few exceptions.

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. One complete set of aerial photography was provided for the project, including both a set of prints and diapositives. The specifications for the aerial photography are listed below: Color infrared photography (CIR) Flown October 29, 1996 - (height of the leaf change) Nominal scale - 1:6,000 (Nominal refers to the photo scale variability within each aerial photo and across flight lines. In this case the photo scale ranged from approximately 1:5,800 to 1:6,200) Approximate photo size - 9" x 9" Overlap between photos and across flight paths met the standards for photo interpretation using a mirror stereo scope. (Approximately 60% between photos and 10% - 20% between the flight lines)

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. One complete set of aerial photography was provided for the project, including both a set of prints and diapositives. The specifications for the aerial photography are listed below: Color infrared photography (CIR) Flown October 29, 1996 - (height of the leaf change) Nominal scale - 1:6,000 (Nominal refers to the photo scale variability within each aerial photo and across flight lines. In this case the photo scale ranged from approximately 1:5,800 to 1:6,200) Approximate photo size - 9" x 9" Overlap between photos and across flight paths met the standards for photo interpretation using a mirror stereo scope. (Approximately 60% between photos and 10% - 20% between the flight lines)

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. Color infrared, stereo pair 1:6,000 scale aerial photography of Valley Forge National Historical Park was acquired from an overflight on September 12, 1999, during leaf-on conditions, by Air Photographics, Inc. The photography was delivered to the National Park Service (NPS) and then forwarded to North Carolina State University where the digital orthophoto mosaic was produced.

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. Color infrared, stereo pair 1:6,000 scale aerial photography of Valley Forge National Historical Park was acquired from an overflight on September 12, 1999, during leaf-on conditions, by Air Photographics, Inc. The photography was delivered to the National Park Service (NPS) and then forwarded to North Carolina State University where the digital orthophoto mosaic was produced.

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. Two sets of digital orthophotography were used in the vegetation/land use mapping process after the 2003 field season: (1) a digital orthophoto mosaic that is referred to as the Battlefield Unit photomosaic and (2) digital orthophotography of the Schuyler House, Saratoga Monument, and Victory Woods areas, located approximately seven mi (11.3 km) north of the Battlefield Unit, referred to as the Old Saratoga Unit orthophotography.