USGS 201601 Unknown Boundary Vector Data Leading Edge Geomatics (LEG) collected 994 square miles in the Virginia counties of Accomack and Northampton. The nominal pulse spacing for this project was 1 point every 0.7 meters. Dewberry used proprietary procedures to classify the LAS according to project specifications: 0-Never Classified, 1-Unclassified, 2-Ground (bare earth points identified as Model Key Points are flagged with the Model Key Point bit), 7-Low Noise, 9-Water, 10-Ignored Ground due to breakline proximity, 17- Bridge Decks, 18-High Noise. Dewberry produced 3D breaklines and combined these with the final LiDAR data to produce seamless hydro flattened DEMs for the project area. The data was formatted according to the VBMP tile naming convention with each tile covering an area of 5,000 feet by 5,000 ft. A total of 1375 LAS tiles and 1310 DEM tiles were produced for the entire project. The purpose of this LiDAR data was to produce high accuracy 3D elevation products, including tiled LiDAR in LAS 1.4 format, 3D breaklines, and 2.5 foot cell size hydro flattened Digital Elevation Models (DEMs). All products follow and comply with USGS Lidar Base Specification Version 1.2. A complete description of this dataset is available in the Final Project Report submitted to the USGS. 20150411 20150424 ground condition Complete As needed -76.093949 -75.227100 38.064707 37.062181 None DTM Elevation LiDAR LAS DEM Hydro Flattened Breaklines None Virginia Eastern Shores Accomack County Northampton County USA None This data was produced for the USGS according to specific project requirements. This information is provided "as is". Further documentation of this data can be obtained by contacting: USGS/NGTOC, 1400 Independence Road, Rolla, MO 65401. Telephone (573) 308-3810. USGS USGS NGTOC mailing and physical address
1400 Independence Road
Rolla MO 65401 USA (573) 308-3810 pemmett@usgs.gov Microsoft Windows 7 Enterprise Service Pack 1; ESRI ArcCatalog 10.3 The boundary represents the project area where LiDAR data was acquired and processed. A tile grid was provided by the client as the boundary for Eastern Shore Virginia. Dewberry created a boundary to exclude tiles that only contained water in the tile grid to eliminate any potential interpolation or pixel issues. This boundary represents the extent of LiDAR data collected for this project. The boundary itself does not have a tested or produced to meet horizontal positional accuracy. The boundary file is provided to Dewberry by the client. Dewberry extended the client provided boundary where tiles had ground to include thirty four extra tiles. 2D polygon 201511 Final 2D polygon Dewberry - Geospatial Services Group Elise MacPherson Project Manager mailing and physical address
1000 N. Ashley Drive, Suite 801
Tampa FL 33602 USA 813.421.8647 813.225.1385 emacpherson@dewberry.com 8:00 - 5:00 EST Vector G-polygon 4 Lambert Conformal Conic (State Plane Virginia South FIPS 4502) 36.766 37.966 -78.5 36.333 11482916.666 3280833.333 coordinate pair 0.000100 0.000100 U.S. survey feet North American Datum of 1983 (2011) Geodetic Reference System 80 6378137.000000 298.257222 North American Vertical Datum of 1988 (Geoid 12A) 0.000100 U.S. survey feet Explicit elevation coordinate included with horizontal coordinates Boundary 2D polygon depicting project boundary U.S. Geological Survey FID Internal feature number ESRI Sequential unique whole numbers that are automatically generated. SHAPE Feature geometry. ESRI Coordinates defining the features. Name Name of boundary area USGS String Area_SQ_MI Area of feature in Miles units squared. ESRI Positive real numbers that are automatically generated. BUFF_DIST Distance boundary was buffered ESRI Positive real numbers that are automatically generated. USGS Program Manager mailing and physical address
1400 Independence Road
Rolla MO 65401 USA (573) 308-3810 pemmett@usgs.gov Downloadable Data This data was produced for the USGS according to specific project requirements. This information is provided "as is". Further documentation of this data can be obtained by contacting: USGS/NGTOC, 1400 Independence Road, Rolla, MO 65401. Telephone (573) 308-3810 201601 USGS Elise MacPherson USGS NGTOC mailing and physical address
1400 Independence Road
Rolla MO 65401 USA (573) 308-3810 pemmett@usgs.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile