Datasets, Imagery > LiDAR > Illinois--Bond County > 2015-2019

Height Modernization (ILHMP) LiDAR Data [Bond County, Illinois] (2015)

Illinois State Geological Survey · 2015 Full Details

Full Details

Title
Height Modernization (ILHMP) LiDAR Data [Bond County, Illinois] (2015)
Description
This Digital Terrain Model (DTM) data was produced all or in part from LiDAR information as of 2015. The LiDAR derived DTM covers Bond County, Illinois and include inland streams, rivers, lakes ponds and tidal features. These data are appropriate for use in local and regional analysis. This data set has a vertical accuracy of 6.24 centimeters RMSEz, horizontal accuracy of 0.6 meters and point spacing of 0.89 meters. Digital Elevation Models (including terrain and surface models) are raster data sets created from whole LiDAR point cloud data sets (LAS files). The LAS files are the standard LiDAR file format which contains the raw point cloud data, these data are normally classified and distinguished between points on the ground, water or elevated features such as buildings, trees, towers, bridges, etc.. These LAS files are processed into elevation models to create gridded rasters. The first returns can be used to map the top reflective surface (Digital Surface Models - DSM), these normally include open terrain areas, as well as the tops of buildings, trees, towers, and other features elevated above the bare earth. The last returns are used to map the bare-earth terrain (Digital Terrain Models - DTM), these are normally produced with irregularly-spaced points rather than the uniform grid structure of a Digital Elevation Model (DEM), Digital Terrain Models will often include breaklines to help define edges of water bodies.
Creator
Illinois State Geological Survey
Temporal Coverage
2015
Date Issued
2015
Access Rights
Public
Format
Shapefile
Language
English
Date Added
April 27, 2021

Location

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Links

Cite and Reference

  • Citation
    Illinois State Geological Survey (2015). Height Modernization (ILHMP) LiDAR Data [Bond County, Illinois] (2015). . http://clearinghouse.isgs.illinois.edu/data/elevation/illinois-height-modernization-ilhmp (dataset)
  • BTAA Geoportal Link

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