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Lidar Elevation, 2007 [Minnesota--Chisago County]

Minnesota Geospatial Commons Full Details

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Title
Lidar Elevation, 2007 [Minnesota--Chisago County]
Description
The lidar data for Chisago County was collected under contract by Chisago County. Thus, the data format is not entirely consistent with some of the other lidar data collected by the State of Minnesota. Specifically, the Chisago County collect did not require classification of anything other than Bare Earth in the lidar LAS files, so there is no information on buildings, vegetation, or model key points. Breaklines captured as part of this effort are also a bit different. In Chisago County the breaklines are 3D Polyline features vs 3D Polygon features. They also include road centerlines, stream courses and other features that are not part of the Statewide collect specifications. Lidar was classified and stereo-pairs were generated from lidar intensity data which were used to collect breaklines. A surface was generated from the bare earth lidar DTM (digital terrain model) and the collected breakline data to produce the contours and the DEMs. Tiling: Bare-earth and first-return lidar data in LAS format are divided into 5000' X 5000' sheet tiles named according to the Lower Left XY coordinate value. Five-foot posted raster bare-earth DEMs in ArcGrid format are divided into 5000' X 5000' sheet tiles. The contours are divided into township areas. Optimal Geomatics, Inc. collected and processed the lidar data, and authored the procedures quality control reports., The bare-earth data and breakline data was utilized to produce terrain surface models for the generation of the one-foot contours and the raster DEM., Ground condition. Data was collected between April 18 - 28, 2007.
Creator
Minnesota--Chisago County
Publisher
Minnesota Geospatial Commons
Rights
None
Access Rights
Public
Format
Files
Language
English
Date Added
August 20, 2023
Provenance Statement
The metadata for this resource was last retrieved from the Minnesota Geospatial Commons on 2025-08-26.

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Cite and Reference

  • Citation
    Minnesota--Chisago County (n.d.). Lidar Elevation, 2007 [Minnesota--Chisago County]. Minnesota Geospatial Commons. https://gisdata.mn.gov/dataset/d73ad835-5288-4741-8070-573e5332954a (other)
  • BTAA Geoportal Link

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