LiDAR Elevation, Pine County, Minnesota, 2006

This page last updated: 11/27/2017
Metadata created using Minnesota Geographic Metadata Guidelines


Go to Section:
1. Overview
2. Data Quality
3. Data Organization
4. Coordinate System
5. Attributes
6. Distribution - Get Data
7. Metadata Reference

Section 1 Overview
Originator Sanborn Mapping for the U.S. Department of Agriculture Natural Resources Conservation Service
Title LiDAR Elevation, Pine County, Minnesota, 2006
Abstract This dataset is a bare earth (vegetation removed) digital elevation model (DEM) of Pine County, Minnesota. The download file includes 1-meter and 3-meter DEMs, a 3-meter hillshade, 2-foot contours, slope and validation points. The data is FEMA-compliant.

LiDAR data for Pine County, Minnesota, was collected under contract by the Natural Resources Conservation Service. Thus, the data format is not entirely consistent with some of the other LiDAR data collected by the State of Minnesota. Specifically, the Pine 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. There are also no edge-of-water breaklines so the DEMs have not been hydro flattened.

Note: This metadata record was created at the Minnesota Geospatial Information Office by combining information from Sanborn Mapping, NRCS, and the Minnesota Department of Natural Resources.
Purpose The USDA Natural Resources Conservation Service contracted for this data to aid the soil survey with contours, hillshades, and other derivatives from the DEMs.

This data will also be used to generate contours for use in hydraulic / hydrologic model development and for assessing environmental impacts.
Time Period of Content Date 2006
Currentness Reference Data was collected from 10/25/2006 to 11/6/2006.
Progress Complete
Maintenance and Update Frequency None Planned
Spatial Extent of Data Pine County, Minnesota
Bounding Coordinates -93.144399
-92.289602
46.419592
45.727871
Place Keywords Minnesota, MN, Pine County
Theme Keywords elevation, LiDAR, DEM, digital elevation model, contour, topographic, topo, DTM, LAS, breaklline
Theme Keyword Thesaurus ISO 19115 Topic Category
Access Constraints None
Use Constraints See Disclaimer field for complete use conditions.
Contact Person Information Andy Lucero, Project Manager
Sanborn Mapping
1935 Jamboree Drive Suite 100
Colorado Springs, CO  80920
Phone: 719-264-5645
Fax: 719-528-5093
Email: alucero@sanborn.com
Browse Graphic None available
Associated Data Sets 1. Pine County check points collected by Houston Engineering
http://www.mngeo.state.mn.us/chouse/metadata/lidar_checkpts_pine2007.html

2. For information on other elevation data available in Minnesota, see:
http://www.mngeo.state.mn.us/chouse/elevation/index.html

Section 2 Data Quality
Attribute Accuracy The contract specified that bare earth elevation models adhere to the following minimum performance (removal): 89% of artifacts, 90% of all outliers, 90% of vegetation, 93% of buildings.
Logical Consistency N/A
Completeness The data covers all of Pine County, approximately 1,435 square miles.
Horizontal Positional Accuracy This program requires LIDAR to be collected on average of 3-meter point spacing or better. Because of weather conditions, Sanborn was forced to fly the mission at a height that provided for lower mean point spacing than required by the contract.

The NAD83 datum was used. No further information on the datum was provided to DNR or MnGeo.
Vertical Positional Accuracy The NAVD88 vertical datum was used. No geoid information was provided to DNR or MnGeo.

The contract specifications for this data required a 'Fundamental Accuracy' (only points on open, level ground) of 18 centimeters, and 37 centimeters or better at the 95% confidence level for 4-foot contours.

With funding provided by the Minnesota Department of Natural Resources, Houston Engineering collected 100 check points in Pine County and found the RMSEz of the Bare Earth Points to be 18.1 centimeters for consolidated accuracy across five cover classes.

Accuracy report:
ftp://ftp.gisdata.state.mn.us/pub/data/elevation/lidar/county/pine/Pine_county_validation_report.pdf

Metadata for check points:
http://www.mngeo.state.mn.us/chouse/metadata/lidar_checkpts_pine2007.html
Lineage No documentation of sources or vendor processing steps was provided to The Minnesota Department of Natural Resources (DNR) or MnGeo.

DNR Processing Steps:

1) LAS files were retiled into the state tile scheme (1/16 of a USGS 1:24,000 scale quadrangle)
2) Breakline features were merged together into a single feature class
3) Breakline features were projected from County Coordinates to UTM Zone 15, NAD83
4) Breakline Z Values were scaled from feet to meters
5) LAS Bare Earth Points and breaklines were used to create a Terrain data type
6) 1-meter DEM was derived from Terrain using nearest neighbor interpolation option (DEM01)
7) Hillshade was derived from 1-meter DEM (DEM01HS)
8) 3-meter DEM was derived from Terrain using nearest neighbor interpolation option (DEM03)
9) Hillshade was derived from 3-meter DEM (DEM03HS)
10) Aspect was derived from 3-meter DEM (DEM03ASPECT)
11) Slope in degrees was derived from 3-meter DEM (DEM03SLOPE_DEGREES)
12) Slope in percent was derived from 3-meter DEM (DEM03SLOPE_PERCENT)
13) DEM03 was smoothed using a 3x3 mean smoothing filter
14) 2-foot contours were created from the smoothed 3-meter DEM

No edge-of-water breaklines were collected and therefore there was no hydrologic manipulation of the terrain, DEMs or contours.

All processing was done using ArcGIS V10 and LP360 Extensions.

Funding to collect the LiDAR data and create the DEM was provided by the Natural Resources Conservation Service. The Army Corps of Engineers managed the agreements and contracts. The validation process was funded by the DNR.

Section 3 Spatial Data Organization (not used in this metadata)

Section 4 Coordinate System
Horizontal Coordinate Scheme Universal Transverse Mercator
UTM Zone Number 15
Horizontal Datum NAD83
Horizontal Units meters

Section 5 Attributes
Overview Contour types (ftype attribute): Index, Index Annotation, Index Depression, Index Depression Obscured, Index Hidden, Index Obscured, Intermediate, Intermediate Depression, Intermediate Depression Obscured, Intermediate Hidden, Intermediate Obscured
Detailed Citation
Table Detail:

Section 6 Distribution
Publisher Minnesota Department of Natural Resources
Publication Date 02/12/2007
Contact Person Information Nancy Rader, GIS Data Specialist
Minnesota Geospatial Information Office (MnGeo)
658 Cedar Street, Room 300
St. Paul, MN  55155
Phone: 651-201-2489
Email: gisinfo.mngeo@state.mn.us
Distributor's Data Set Identifier Pine County LiDAR 2006
Distribution Liability 1. The Minnesota Department of Natural Resources General Geographic Data License Agreement is online: http://www.dnr.state.mn.us/sitetools/data_software_license.html

2. MnGeo's data disclaimer is online: http://www.mngeo.state.mn.us/chouse/disclaimer.html
Ordering Instructions The LiDAR data may be viewed online or downloaded in several ways:

1. MnTOPO website: http://www.dnr.state.mn.us/maps/mntopo/index.html

- view data online
- download data in Esri and open formats (tiles for most data formats will be mosaicked together during download)
- see the help file for details: http://files.dnr.state.mn.us/aboutdnr/gis/mntopo/mntopo_help_document.pdf

2. MnGeo's FTP site
Use the tile_index.pdf maps to locate the tiles you need. Except for the county file, tiles will not be mosaicked.

a. From the county folder: ftp://ftp.gisdata.state.mn.us/pub/data/elevation/lidar/county/pine/
The county mosaic is named elevation_data.gdb.zip For details of its contents and size, see this table: http://geoint.lmic.state.mn.us/lidar.php

b. In the 250k tiles folder: ftp://ftp.gisdata.state.mn.us/pub/data/elevation/lidar/q250k/


For more help with Minnesota's LiDAR data, see http://www.mngeo.state.mn.us/chouse/elevation/lidar.html
Online Linkage I AGREE to the notice in "Distribution Liability" above. Clicking to agree will either begin the download process, link to a service, or provide more instructions. See "Ordering Instructions" above for details.

Section 7 Metadata Reference
Metadata Date 11/27/2017
Contact Person Information Nancy Rader, GIS Data Specialist
Minnesota Geospatial Information Office (MnGeo)
658 Cedar Street, Room 300
St. Paul, MN  55155
Phone: 651-201-2489
Email: gisinfo.mngeo@state.mn.us
Metadata Standard Name Minnesota Geographic Metadata Guidelines
Metadata Standard Version 1.2
Metadata Standard Online Linkage http://www.mngeo.state.mn.us/committee/standards/mgmg/metadata.htm


This page last updated: 11/27/2017
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