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The purpose of this contour data is provide a high accuracy elevation vector dataset with 3D geometry that may be used with GIS or CAD software for Engineering Planning, 3D modeling, 3D visualization, cartography and associated applications. The contours were generated from LiDAR data originally collected in 2010 and 2011 for the Federal Emergency Management Agency (FEMA) Map Modernization Program and Risk Map Program. The verical datum is NAVD1988. The purpose of this LiDAR data was to produce high accuracy 3D elevation products, including tiled LiDAR in LAS 1.2 format, 3D breaklines, terrain dataset, 2 ft contours, and 5 ft cell size hydro flattened Digital Elevation Models (DEMs). |
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The purpose of this contour data is provide a high accuracy elevation vector dataset with 3D geometry that may be used with GIS or CAD software for Engineering Planning, 3D modeling, 3D visualization, cartography and associated applications. The contours were generated from LiDAR data originally collected in 2010 and 2011 for the Federal Emergency Management Agency (FEMA) Map Modernization Program and Risk Map Program. The verical datum is NAVD1988. The purpose of this LiDAR data was to produce high accuracy 3D elevation products, including tiled LiDAR in LAS 1.2 format, 3D breaklines, terrain dataset, 2 ft contours, and 5 ft cell size hydro flattened Digital Elevation Models (DEMs). |
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Federal Emergency Managment Agency (FEMA), Pulaski Area GIS (PAgis), Central Arkansas Water, City of Jacksonville, City of Little Rock, City of North Little Rock, City of Sherwood, Little Rock Wastewater, North Little Rock Wastewater, Pulaski County Public Works, Arkansas National Guard / Camp Robinson, and the United State Geological Survey (USGS). |
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This dataset consists of 2 foot interval contour lines with ground elvation contained in the 3D geometry attribute data. Fugro EarthData, Inc collected LiDAR for approximately 714 square miles at 1.0 points per square meter (1.0m GSD) for the FEMA project area the southeast portion of Pulaski County in 2010, and most of the remaining part of the County in 2011. The extreme northeastern part of Pulaski County (essentially north of Highay 89 was not collected. Dewberry used proprietary procedures to classify the LAS according to project specifications: 1-Unclassified, 2-Ground, 7-Noise, 9-Water, 10-Ignored Ground, 11-Withheld Points. Dewberry produced 3D breaklines and combined these with the final LiDAR data to produce seamless hydro flattened DEMs for the 199 tiles (10,000 ft x 10,000 ft) that cover the project area. The contour data was generated from the bare earth DEM and DTM data. |
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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) 308-3700. |
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Pulaski County 2010 - 2011 2 foot contours |
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["Saline County, Arkansas","Hydro Flattened","DEM","Lidar","Elevation","Perry County, Arkansas","Pulaski County, Arkansas","elevation","LAS","Contours","DTM","Lonoke County, Arkansas","Faulkner County, Arkansas","Breaklines"] |
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