Elevation 2011-2012, Manassas National Battlefield Park
Federal Emergency Management Agency (FEMA), National Park Service (NPS), U.S. Geological Survey (USGS). 2012. Elevation 2011-2012, Manassas National Battlefield Park. U.S. Geological Survey and National Park Service. Manassas National Battlefield Park, Prince William County, Virginia
These elevation datasets cover the area in and around Manassas National Battlefield Park collected from 2011 to 2012 using Light Detection And Ranging (LiDAR) technology. This data was originally produced for the U.S. Geological Survey (USGS) and the Federal Emergency Management Agency (FEMA) according to specific project requirements. A subset of the total project area was extracted by the National Park Service (NPS) to cover the area in and around Manassas National Battlefield Park (MANA) and the hillshade digital surface model (DSM) derived from that subset. From the original source metadata, "Dewberry collected LiDAR for ~3,341 square miles in various Virginia Counties, a part of Worcester County, and Hooper's Island. The acquisition was performed by Terrapoint. This metadata covers the LiDAR produced for the Virginia Counties North project area. The nominal pulse spacing for this project is 1.6 ft (0.5 meters). This project was collected with a sensor which collects intensity values for each discrete pulse extracted from the waveform. GPS Week Time, Intensity, Flightline and echo number attributes were provided for each LiDAR point. Dewberry used proprietary procedures to classify the LAS according to contract specifications: 1-Unclassified, 2-Ground, 7-Noise, 9-Water, 10-Ignored Ground due to breakline proximity, and 11-Withheld. Dewberry produced 3D breaklines and combined these with the final LiDAR data to produce seamless hydro flattened DEMs for the 2,140 tiles (5000 ft x 5000 ft) that cover the project area."
- Type
- Geospatial Dataset
- Authors
- Federal Emergency Management Agency (FEMA); National Park Service (NPS); U.S. Geological Survey (USGS)
- Date of Issue
- 2012-02
- Publisher
- U.S. Geological Survey and National Park Service
- Units
- MANA , NCR
- Keywords
- Bare Earth, DEM, Digital Elevation Model, Digital Surface Model, DSM, Elevation, Hillshade, LiDAR, Light Detection and Ranging