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. Remotely-sensed imagery provides the foundation for mapping vegetation types and other land cover classes. Imagery taken by the GeoEye-1 satellite/sensor was acquired from LandInfo Worldwide Mapping, LLC. The product was delivered as bundled 50 cm panchromatic and 2 meter 4-band multispectral (R, G, B, and NIR) images. The imagery has a positional accuracy of <3 m. Specifications for the GeoEye acquisition included the following: Total area for new collection of 372 square kilometers, 10% or less cloud cover , 0-20 off-nadir angle guarantee, Acquisition dates between late May and late June, 2011 Imagery satisfying the requirements was successfully acquired for the BICA project area on June 15, 2011 and delivered to CSU in July 2011. Each image was delivered as a geo-referenced product mosaicked as a single scene/image. We created a 50 cm resolution pan-sharpened set of multispectral bands to use for interpretation of vegetation. The acquisition provided 4-band imagery during the peak growing season. Additional imagery supplementing interpretation included 30 cm true-color Google Earth/Bing imagery imported to ArcGIS using Arc2Earth™ software and older true-color imagery viewed using the Google Earth online viewer.

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.

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.

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. Overstory vegetation was mapped using color infrared aerial photographs of 1:12,000 and 1:16,000 scale in film transparency format recorded with a standard photogrammetric mapping camera (f = 15 cm) in late October and early-November by the U. S. Forest Service and Air Photographics (Martinsville, WV). The fall photos were acquired when the leaves were still on the trees (leaf-on) and displayed a color diversity that allowed the vegetation communities/species to be identified. Photo Dates: 10/31/2001 Photo Scale: 1:12,000 Area(ac): 13698

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. To complete the automated phase, CTI subcontracted with Photo Science (based in Lexington, KY) to create a BIBE landform layer and a drainage/wash layer. Photo Science reviewed and acquired all National Elevation Dataset (NED) 10-meter DEMs for the project area and mosaiced them into a seamless coverage. The DEM data was then manipulated to create the following derived spatial layers: aspect, slope, three hillshade datasets (different azimuth angles), a contour range layer, and a compound topographic index (or wetness index) that models water flow and accumulation. Similarly, Photo Science also acquired the 2012 National Agriculture Imagery Program (NAIP) imagery for the entire project area as high-resolution (1-meter pixels) digital ortho quarter quadrangles (DOQQs). The NAIP DOQQs were mosaiced and resampled from 1-meter to 10-meter pixels to match the DEM resolution. Erdas Imagine software was then used to derive a normalized difference vegetation index (NDVI) and a near infrared (NIR) band texture layer from the imagery using a 9x9 moving window. During the planning and coordination phase, CTI staff reviewed all available digital imagery for its potential use as the BIBE basemap. The most promising and easy to access was the data catalog found on the Texas Natural Resource Information System (TNRIS) website. Navigating to the orthoimagery-statewide web page, the list of existing imagery covering BIBE included multiple NAIP products. The corresponding 2010 and 2012 NAIP 1-meter DOQQs for BIBE were downloaded and used during the early planning stages of this project and to produce field maps and interim products.

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. After the field mapping crew finished the initial map unit polygon census, data was entered into a geodatabase. This data was quality checked and the final version was passed to WSAL. Polygons in the initial segmentation that were modified by crews as noted on the hardcopy maps supplied by the field crew were edited directly in the geodatabase. Any new map unit polygons created had a letter added to their original polygon-id field. A crosswalk table was created that linked the initial field key types to the USNVC series of hierarchical classifications and the field comments for each type. These classification attributes were then joined to the initial and final map units in the geodatabase.

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 project area is covered by 28 flight lines flown south to north for the 1:12,000 scale photography and 10 flight lines for the 1:40,000 scale photography. Some of the flight lines overlap with repeat flights due to elevation and scale considerations. A total of 1,412 color photographs were taken at 1:12,000 (1"=1,000') scale and 366 color photographs for the 1:40,000 (1" = 3,333') all printed on 9"x 9" paper stock. Overlap for all photographs was approximately 50-60% and sidelap between flight lines was approximately 20-30%. All photography was acquired between September 25 and October 3, 2001. Repeat dates were required due to the large area being acquired in addition to the challenging terrain. Airborne GPS was collected with a base station at the Fort Collins, Colorado Airport (Latitude: 40 26 58.07884; Longitude:-105 00 24.66076; Height:1509.710 m; Antenna ht:0.203 m). GPS points provided for a flight line point shape file and aided with the ortho-rectification process

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 project area is covered by 28 flight lines flown south to north for the 1:12,000 scale photography and 10 flight lines for the 1:40,000 scale photography. Some of the flight lines overlap with repeat flights due to elevation and scale considerations. A total of 1,412 color photographs were taken at 1:12,000 (1"=1,000') scale and 366 color photographs for the 1:40,000 (1" = 3,333') all printed on 9"x 9" paper stock. Overlap for all photographs was approximately 50-60% and sidelap between flight lines was approximately 20-30%. All photography was acquired between September 25 and October 3, 2001. Repeat dates were required due to the large area being acquired in addition to the challenging terrain. Airborne GPS was collected with a base station at the Fort Collins, Colorado Airport (Latitude: 40 26 58.07884; Longitude:-105 00 24.66076; Height:1509.710 m; Antenna ht:0.203 m). GPS points provided for a flight line point shape file and aided with the ortho-rectification process