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LiDAR Elevation Data: Barron County, WI 2005

Identification Information

Citation
Title
LiDAR Elevation Data: Barron County, WI 2005
Originator
Barron County
Publication Date
2020-06-17
Edition
2005
Geospatial Data Presentation Form
mapDigital
Abstract
This data represents LiDAR elevation information for Barron County, WI in 2005. The following derivative products are available: bare earth points, Classified LAS - xyz first return, 2-foot contours, first return points and hydro breaklines.[Maps and analysis.]
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. [LIDAR data was collected in Barron County, WI. May of 2005, leaf off and no snow, using an Optech ALTM1225, a 25 kHz LIDAR system mounted on board a Cessna 337 twin engine aircraft. A total of 178 flight lines were flown in a north/south direction at approx. 2800’ agl on 964’ centers with a 50% sidelap, a 38° scan angle and an average air speed of 155 mph. This produced an average LIDAR raw point density of sub 0.8 meter throughout the approx 1033 sq mile survey area. The data was processed to create a digital terrain model of the bald earth ground surface and the first return feature surface. A 15 foot gridded bald earth ground surface was used to rectify digital pictures. ]
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
2020-01-01T00:00:00
Temporal Extent
Time Instant
2005-01-01T00:00:00
ISO Topic Category
elevation
Place Keyword
Barron 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
Elevations
Theme Keyword Thesaurus
Status
completed
Maintenance and Update Frequency
unknown
Language
eng
Credit
Barron County
Point of Contact
Contact
Barron County
Delivery Point
330 East La Salle Ave, Room 2401
City
Barron
Administrative Area
WI
Postal Code
54812
Country
US
Phone
715-537-6385

Spatial Reference Information

Reference System Identifier
Code
7589
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
7C8C2013-81AD-41A8-924D-20C7C94A1625
Metadata Point of Contact
Name
Arthur H. Robinson Map Library
Position Name
Metadata Technician
Delivery Point
550 N. Park St
City
Madison
Administrative Area
Wisconsin
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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