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. Base Imagery used for mapping (acquired by MoRAP): 2009, Benton County, AR, leaf-on, true color, 0.61 m (2 feet) 2009, Benton County, AR, leaf-off, 4-band CIR, 1 m The mapping component was produced by identifying land cover in a three-step process: (1) image objects were generated at 1 m resolution using e-Cognition applied to stacked leaf-on and leaf-off air photos, (2) image objects were coded with land cover classes on-screen, and (3) image objects were cut and corrected via heads-up digitizing at a display scale of 1:1,500 against a back-drop of air photos. The best available imagery was from the NAIP. This included 2009 leaf-on true color and 4-band color infrared (CIR) 1 m resolution photos, and 2007-2009 leaf-off true color 2 foot resolution photos.

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.

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 files linked to this reference are the geospatial data created as part of the completion of the baseline vegetation inventory project for the NPS park unit. Current format is ArcGIS file geodatabase but older formats may exist as shapefiles. GIS Database 2011 - 2012: Pea Ridge National Military Park = 4,267 acres (1,727 hectares) Base Imagery used for mapping (acquired by MoRAP): 2009, Benton County, AR, leaf-on, true color, 0.61 m (2 feet) 2009, Benton County, AR, leaf-off, 4-band CIR, 1 m Minimum Mapping Unit = 0.5 hectares (ha) Minimum Patch Size = .005 hectares (ha) Total Size = 300 Polygons Average Polygon Size = 14.22 acres (5.75 ha) Overall Thematic Accuracy = 93.1% Project Completion Date: 11/2012

The files linked to this reference are the geospatial data created as part of the completion of the baseline vegetation inventory project for the NPS park unit. Current format is ArcGIS file geodatabase but older formats may exist as shapefiles. GIS Database 2011 - 2012: Pea Ridge National Military Park = 4,267 acres (1,727 hectares) Base Imagery used for mapping (acquired by MoRAP): 2009, Benton County, AR, leaf-on, true color, 0.61 m (2 feet) 2009, Benton County, AR, leaf-off, 4-band CIR, 1 m Minimum Mapping Unit = 0.5 hectares (ha) Minimum Patch Size = .005 hectares (ha) Total Size = 300 Polygons Average Polygon Size = 14.22 acres (5.75 ha) Overall Thematic Accuracy = 93.1% Project Completion Date: 11/2012

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. Photo Date: 10/24/2000, Scale: 1:12,000 Area(ac): 3955 The CIR aerial photographs in transparency format were scanned at 600 dpi (42 μm) using an Epson Expression 10000XL flatbed scanner. This scanner is capable of scanning materials up to 11x17‖ in size at optical resolutions up to 1200 dpi and is equipped with a backlight attachment for scanning transparent materials. The 600 dpi scanning resolution was selected to balance the resolution requirements for the orthophotos with data storage and processing considerations. The photographs were laid on the scanning surface and, to reduce distortions, a heavy piece of clear glass was placed on top to ensure flatness of the film during scanning. Each photo was then scanned using Adobe Photoshop and saved as a 24-bit color TIFF file. During scanning, care was taken to scan the full frame of the photograph, including the corner fiducial marks and marginal data. File names for the scanned photographs were assigned according to the flight line and frame number. For example, photo 13 from flight line 2 was named 2-13.tif. Photos from each park were stored in separate folders on the CRMS Data server. All photos from each flight line were scanned. For original photos of 1:12,000 and 1:16,000 scales, the resulting pixel sizes were approximately 0.5 m and 0.67 m, respectively. After the photos were scanned, the original film transparencies were turned over to the photointerpreters while the photogrammetric operations continued using the digital data.

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. Photo Date: 10/24/2000, Scale: 1:12,000 Area(ac): 3955 The CIR aerial photographs in transparency format were scanned at 600 dpi (42 μm) using an Epson Expression 10000XL flatbed scanner. This scanner is capable of scanning materials up to 11x17‖ in size at optical resolutions up to 1200 dpi and is equipped with a backlight attachment for scanning transparent materials. The 600 dpi scanning resolution was selected to balance the resolution requirements for the orthophotos with data storage and processing considerations. The photographs were laid on the scanning surface and, to reduce distortions, a heavy piece of clear glass was placed on top to ensure flatness of the film during scanning. Each photo was then scanned using Adobe Photoshop and saved as a 24-bit color TIFF file. During scanning, care was taken to scan the full frame of the photograph, including the corner fiducial marks and marginal data. File names for the scanned photographs were assigned according to the flight line and frame number. For example, photo 13 from flight line 2 was named 2-13.tif. Photos from each park were stored in separate folders on the CRMS Data server. All photos from each flight line were scanned. For original photos of 1:12,000 and 1:16,000 scales, the resulting pixel sizes were approximately 0.5 m and 0.67 m, respectively. After the photos were scanned, the original film transparencies were turned over to the photointerpreters while the photogrammetric operations continued using the digital data.

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.

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.

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. Imagery Date: 10/25/2001, Scale: 1:12,000, Area 3,960 ac Overstory vegetation was interpreted from the 1:12,000 to 1:16,000 scale leaf-on color infrared aerial photographs in 9 x 9 inch film transparency format. A compilation of all field information was used by CRMS photointerpreters to connect the NVCS association-level classes identified in the field with photo signatures for vegetation patches identified on the color infrared aerial photographs. The locations of CRMS field points were transferred from the GPS units to ArcMap and superimposed on orthorectified images of each park.