LiDAR Elevation Data: Burnett County, WI 2015

Identification Information

Citation

Title

LiDAR Elevation Data: Burnett County, WI 2015

Originator

Burnett County

Publication Date

2020-06-22

Edition

2015

Geospatial Data Presentation Form

mapDigital

Abstract

This data represents LiDAR elevation information for Burnett County, WI in 2015. The following derivative products are available: bare earth points, classified LAS, 2-foot contours, hydro breaklines, a countywide DEM, tile DEMs, a countywide DSM, and tile DSMs. Also included for Burnett County are Intensity images.[The Burnett County, Wisconsin WROC project area covers 910 square miles. Lidar data was acquired with a nominal point spacing (NPS) of 1.0 meters. The data was developed based on a horizontal projection/datum of Wisconsin County Reference System (WISCRS) – Burnett County Coordinates; North American Datum 1983 (2011), survey feet, and vertically geo-referenced to the North American Vertical Datum 1988 (Geoid 12A), survey feet. LiDAR data was acquired using the Orion Optech H300 sensor. Collection occurred in April 2015 during leaf-off conditinons, while no snow was on the ground and rivers were at or below normal levels. The LiDAR data was calibrated using information collected at the time of flight from GPS base stations on the ground and airborne GPS/IMU in the aircraft. The calibrated LiDAR data was processed to produce a classified point cloud, bare earth DTM, DEM, DSM, contours, breaklines, and intensity images. LiDAR data was collected to support the generation of 2-foot contours to meet FEMA vertical accuracy standards. The LiDAR data was delivered according to a 5,000 foot x 5,000 foot tile schematic.]

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 was acquired to produce an accurate bare earth surface and to generate 2-ft contours to support county land information efforts.]

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. [Point Classes are as follows: 1 = Processed, Unclassified 2 = Bare Earth Ground 5 = High Vegetation 6 = Building 7 = Low Points (Noise) 9 = Water 10 = Ignored Ground 11 = Withheld 17 = Bridge Decks The classified point cloud is delivered in both LAS and ESRI shapefile format. The shapefile delivery of the classified point cloud excludes Class 11.] 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. [Contour line types: Index, Intermediate, Index Depression, Intermediate Depression. ESRI PolylineZM] 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. [Breaklines represent Pond, Double Line Drain, Island, and Hard Breakline. Breaklines were translated to ESRI shapefile format using ESRI conversion software.] 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

2015-01-01T00:00:00

ISO Topic Category

elevation

Place Keyword

Burnett 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

Ponds

River

Island

Topography

Elevations

Intensity

Theme Keyword Thesaurus

LCSH

Status

completed

Maintenance and Update Frequency

unknown

Language

eng

Credit

Burnett County

Point of Contact

Contact

Burnett County

Delivery Point

7410 County Road K #120

City

Siren

Administrative Area

WI

Postal Code

54872

Country

US

Phone

715-349-2109

Spatial Reference Information

Reference System Identifier

Code

8208

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

A4A36454-B4F7-4F3D-8A24-DC20F35B2620

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