North Carolina State University, Center for Earth Observation 20010622 first remote-sensing image http://www1.usgs.gov/vip/apco/apcoortho.zip doi:10.5066/F7VT1Q15 Orthorectified color infrared ERDAS IMAGINE image of Appomattox Courthouse National Historical Park and surrounding parcels. Produced from 42 color infrared photos taken December 18, 2000 in leaf-off conditions. Overall positional accuracy is 1.475 meters (Euclidean distance). This meets the Class 1 NMAS map accuracy standard. The dataset was created for Appomattox Courthouse National Historical Park for use in natural resource management. 20001218 1300 ground condition Complete Unknown Appomattox Courthouse National Historical Park and environs -78.831227 -78.771467 37.400865 37.356894 none IMAGINE ERDAS Orthobase Color Infrared mosaic aerial photo photo mosaic digital photogrammetry softcopy photogrammetry none Virginia Historical Park National Park Appomattox Court House National Historical Park Appomattox none 2000 leaf-off December none none Natural Resources Specialist Appomattox Courthouse National Historical Park Natural Resources Specialist mailing address

Natural Resources Specialist Appomattox Courthouse National Historical Park Hwy. 24, P.O. Box 218

Appomattox Virginia 24522 USA (804) 352-8987 ext. 28 (804) 352-8330 Unknown Melani Harrell, NCSU-CEO ESRI ArcInfo 7.2.1, ERDAS Orthobase 8.4. none Appomattox Courthouse National Historical Park Overall positional accuracy is 1.475 meters (Euclidean distance). This meets the Class 1 NMAS map accuracy standard. Horizontal accuracy was found by assessing 39 points spread throughout the orthorectified image area. These points were identified on the basemap and then were found in the field where their coordinates were taken using a Trimble ProXRS with real time data correction. The field coordinates were then compared to the coordinates from the basemap in ArcView 3.2 to determine positional accuracy. Air Photographics, Inc Unpublished Material first remotely-sensed image 6000 color infrared aerial photographs 20001218 ground condition aerial photos Aerial view of Appomattox Courthouse National Historical Park The aerial photos (42 total) were used to create an orthorectified mosaic using ERDAS IMAGINE and ERDAS Orthobase. The photos were scanned at 600 dpi and imported into IMAGINE. They were then orthorectofied using four USGS DOQQ's and a USGS National Seamless Elevation DEM as reference. The DEM was resampled from 30 meters to 10 meters using ArcInfo 7.2.1. Each photo was entered into an Orthobase photo block and registered to its interior orientation. Tie points were applied and automatic tie points generated and control points were applied in the Orthobase Point Measurement Tool. Once a successful triangulation solution was reached in Orthobase, the orthorectified images were then mosaiced within IMAGINE to form one seamless basemap image for Appomattox Courthouse National Historical Park. 200104 North Carolina State University, Center for Earth Observation mailing address

NCSU Campus Box 7106

Raleigh NC 27695-7106 USA 919-515-3430 919-515-3439 9:30 am - 6:00 pm Raster Pixel 18095 19702 1 Universal Transverse Mercator 17 0.999600 -81.000000 0.000000 500000.000000 0.000000 row and column 0.26310345 0.26310345 meters North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 Dataset consists of a raster 3 band color image, each pixel value is between 0-255. none USGS/CSS/Core Science Analytics and Synthesis USGS-NPS Vegetation Characterization Program Coordinator mailing and physical address

Denver Federal Center, Building 810, MS 302

Denver Colorado 80225 (303) 202-4220 303-202-4219 gs-b-npsveg@usgs.gov Downloadable Data The U.S. Geological Survey and the National Park Service shall not be held liable for improper or incorrect use of the data described and/or contained herein. These data and related graphics (if available) are not legal documents and are not intended to be used as such. The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistent within the limitations of geospatial data in general and these data in particular. Any related graphics (if available) are intended to aid the data user in acquiring relevant data; it is not approriate to use the related graphics as data. The U.S. Geological Survey and the National Park Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from an U.S. Geological Survey and National Park Service servers and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the utility of the data on another system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. Mention of trade names or commercial products in this metadata report does not constitute endorsement or recommendation for use by the U. S. Department of the Interior, U. S. Geological Survey and National Park Service. HTML http://www.usgs.gov/core_science_systems/csas/vip/parks/apco.html Internet Access None 20010622 20100512 USGS/CSS/Core Science Analytics and Synthesis USGS-NPS Vegetation Characterization Program Coordinator mailing and physical address

Denver Federal Center, Building 810, MS 302

Denver Colorado 80225 (303) 202-4220 303-202-4219 gs-b-npsveg@usgs.gov FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata FGDC-STD-001.1-1999 http://www.usgs.gov/core_science_systems/csas/metadata/index.html