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LiDAR Elevation Data: Columbia County, WI 2011
- Identification Information
- Spatial Reference Information
- Data Quality Information
- Distribution Information
- Spatial Representation Information
- Metadata Reference Information
Identification Information
- Citation
- Title
- LiDAR Elevation Data: Columbia County, WI 2011
- Originator
- Columbia County
- Publication Date
- 2021-06-28
- Edition
- 2011
- Geospatial Data Presentation Form
- mapDigital
- Collection Title
- Wisconsin Elevation Data
- Abstract
- This data represents LiDAR elevation information for Columbia County, Wisconsin in 2011. The following derivative products are available: bare earth points, classified LAS, 2-foot contours, hydro breaklines, and derived terrain. Bare Earth Points: [The Bare Earth LAS was developed from a LiDAR flight flown in the Fall of 2011 as part of the Columbia County 2011 WROC project.]Derived Terrain: [Terrain data, as defined in FEMA Guidelines and Specifications, Appendix N: Data Capture Standards, describes the digital topographic data that was used to create the elevation data representing the terrain environment of a watershed and/or floodplain. Terrain data requirements allow for flexibility in the types of information provided as sources used to produce final terrain deliverables. Once this type of data is provided, FEMA will be able to account for the origins of the flood study elevation data. (Source: FEMA Guidelines and Specifications, Appendix N, Section N.1.2).]Hydro Breaklines: [The Breakline vectors were developed from the LiDAR points to define hard and soft breaklines, mostly hydrography, in the terrain surface, as part of the Columbia County 2011 lidar Project.]
- Purpose
- This data is intended for reference and mapping purposes, and may be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analysis with other spatial data. Bare Earth Points: [The 2011 Bare Earth LAS and DWG files contain a subset of the total LiDAR point cloud. This dataset constitutes the bare terrain surface data set with all other classifications omitted. File formats include: ESRI Shapefile, AutoCAD DWG, and LAS format. Coupled with the breakline features this data set is the 2011 Columbia County digital terrain model. The 2011 Bare Earth LAS and DWG files contain a subset of the total LiDAR point cloud. This dataset constitutes the bare terrain surface data set with all other classifications omitted. File formats include: ESRI Shapefile, AutoCAD DWG, and LAS format. Coupled with the breakline features this data set is the 2011 Columbia County digital terrain model.] Derived Terrain: [Terrain data is used to represent the topography of a watershed and/or floodplain environment and to extract useful information for hydraulic and hydrologic models. (Source: FEMA Guidelines and Specs, Appendix N)] Hydro Breaklines: [The 2011 breaklines dataset contains the hydrographic breaklines necessary for terrain surface development. This dataset establishes the deviation parameters for the development of derivative terrain data. File formats include: ESRI shapefile and AutoCAD DWG format.]
- Supplemental Information
- Data is available for download from: https://web.s3.wisc.edu/wsco-wisconsinview/lidar/Columbia/Columbia_2011_County_Delivery/ Detailed, original metadata accompanying this LiDAR data is available inside the ‘Metadata’ folder from WisconsinView. Bare Earth Points: Bare earth LiDAR is digital elevation data of the terrain surface consisting of irregularly spaced points, each with x/y location coordinates and z-value. The data have been subjected to automated and manual editing to remove vegetation, buildings, and other man-made structures. Classified LAS: Point classification using semi-automated techniques on the point cloud to assign the feature type associated with each point. Lidar points can be classified into a number of categories including bare earth or ground, top of canopy, and water. The different classes are defined using numeric integer codes in the LAS files. Contours: A line through all contiguous points of equal elevation value. Contours are vector features used to represent the elevation of a landscape in a relatively familiar way. They are typically used for basemaps and general topographic representation. Derived Terrain: A vector data set composed of regularly spaced points and natural features such as ridges and breaklines. A DTM augments a DEM by including linear features of the bare-earth terrain. Hydro Breaklines: Breaklines maintain the definition of water-related features in an elevation model. They are used to capture linear discontinuities in the surface, lake shorelines, single-line drains for small rivers, and double-line drains for large rivers. [Coupled with the classified lidar bare earth points, this data set is the 2011 digital terrain model.]
- Temporal Extent
- Time Instant
- 2011-11-12T00:00:00
- Bounding Box
- West
- -89.855
- East
- -88.922
- North
- 43.692
- South
- 43.229
- ISO Topic Category
- elevation
- Place Keyword
- Columbia County
-
Wisconsin
- Place Keyword Thesaurus
- GNS
- Theme Keyword
-
Digital elevation models
- Theme Keyword Thesaurus
- LCSH
- Theme Keyword
- Lidar
- Contours
- Grids
- Surface models
- Terrain models
- Relief models
- Hydrography
- Topography
-
Elevations
- Theme Keyword Thesaurus
- LCSH
- Status
- completed
- Maintenance and Update Frequency
- unknown
- Language
- eng
- Credit
- Columbia County
- Point of Contact
- Contact
- Columbia County
Spatial Reference Information
- Reference System Identifier
- Code
- 4152
- Code Space
- EPSG
- Version
- 10.027
Data Quality Information
- Quantitative Attribute Accuracy Report
Distribution Information
- Format Name
- Various
- Format Version
- 1.0
- Distributor
- University of Wisconsin-Madison
- Distributor
- Online Access
- https://web.s3.wisc.edu/wsco-wisconsinview/lidar/Columbia/Columbia_2011_County_Delivery/
- Protocol
- WWW:DOWNLOAD-1.0-http—download
- Name
- WisconsinView.org
- Function
- download
Spatial Representation Information
- Vector
- Topology Level
- geometryOnly
- Vector Object Type
- surface
- Vector Object Count
Metadata Reference Information
- Hierarchy Level
- dataset
- Metadata File Identifier
- E0500945-A592-4D3F-B3B4-F803B6145C42
- Metadata Point of Contact
- Name
- Arthur H. Robinson Map Library
- Position Name
- Metadata Technician
- Delivery Point
- 550 N. Park Street
- City
- Madison
- Administrative Area
- WI
- Postal Code
- 53706
- Country
- US
- askmap@library.wisc.edu
- Phone
- 608-262-1471
- Metadata Date Stamp
- 2021-06-28
- Metadata Standard Name
- ISO 19139 Geographic Information - Metadata - Implementation Specification
- Metadata Standard Version
- 2007
- Character Set
- utf8