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LiDAR Elevation Data: Dodge County, WI 2006

Identification Information

Citation
Title
LiDAR Elevation Data: Dodge County, WI 2006
Originator
Dodge County
Publication Date
2020-06-23
Edition
2006
Geospatial Data Presentation Form
mapDigital
Abstract
This data represents LiDAR elevation information for Dodge County, Wisconsin in 2006. The following derivative products are available: bare earth points, classified LAS, 2-foot contours, 10-foot contours, hydro features, a countyside DEM, and a town DEM. Also included for Ashland County are "boundaries" (county_limit_+2000ft.shp) and "raster slope" (Slope_9Pct_75ftCells.shp and Slope_75ftCells.shp).
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. [The Dodge County LiDAR elevation data is to provide high accuracy bare-earth processed LiDAR data for the defined terrain located in Dodge County, Wisconsin. The project consisted of acquisition, post-processing, and classification of LiDAR data. The classified bare-earth data achieves the following: nominal horizontal spacing of 3 feet based on the Wisconsin County Coordinate System, Dodge County, related to the North American Datum of 1983/1997. Vertical accuracy was to support the capability of generating 2 ft contours relative to the North American Vertical Datum of 1988. The vertical accuracy testing methods derived from the NSSDA/FEMA and NDEP/ASPRS guidelines, when applied to the Dodge County project, verify that the digital vertical data provided by AME is well suited for the production of 2 ft contours.]
Supplemental Information
Data is available for download from: https://web.s3.wisc.edu/wsco-wisconsinview/lidar/ 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. Countywide Digital Elevation Model (DEM): A DEM represents the bare-Earth surface, removing all natural and built features. The dataset contains a single file covering the entire county. Tiled Digital Elevation Model (DEM): A Digital Elevation Model (DEM) represents the bare-Earth surface, removing all natural and built features. The data contains (possibly) hundreds of individual files available to download as small tiled geographic areas over the extent of an entire county. Digital Surface Model (DSM): A Digital Surface Model (DSM) captures both the natural and built/artificial features of the environment.
Temporal Extent
Time Instant
2006-01-01T00:00:00
ISO Topic Category
elevation
Place Keyword
Dodge County
Wisconsin
Place Keyword Thesaurus
GNS
Theme Keyword
Digital elevation models
Theme Keyword Thesaurus
LCSH
Theme Keyword
Lidar
Contours
Grids
Surface models
Terrain models
Hydrography
Topography
Slopes
Elevations
Theme Keyword Thesaurus
Status
completed
Maintenance and Update Frequency
unknown
Language
eng
Credit
Dodge County
Point of Contact
Contact
Dodge County
Delivery Point
127 E Oak St
City
Juneau
Administrative Area
WI
Postal Code
53039-1329
Country
US
Phone
920-386-3960

Spatial Reference Information

Reference System Identifier
Code
8189
Code Space
EPSG
Version
9.7

Data Quality Information

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/
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
1403A97E-E39A-44A3-B3D3-EE5FEFC4F54E
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
Email
askmap@library.wisc.edu
Phone
(608) 262-1471
Metadata Date Stamp
Metadata Standard Name
ISO 19139 Geographic Information - Metadata - Implementation Specification
Metadata Standard Version
2007
Character Set
utf8
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