*****NOTE: This data does not necessarily reflect true or current surface elevations. The Digital Elevation Model (DEM) is a compilation of numerous data sets of varying time frames. Elevation discrepancies do exits between data sets. Elevation errors may exits in the data, and mining activities have occurred in areas since the elevation data was collected.
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Title 5 meter Digital Elevation Model of the Mesabi Iron Range
Abstract A digital elevation model (DEM) produced at a 5 meter sampling interval. Mesab10_04 was constructed using elevation data from the following sources: Mesabi Elevation Project 1999 (mass point and breakline), LTV 2001mine closure (mass point and breaklines), Hibtac 2002 (contours) and Mintac 2004 (contours) and Inland 2004 (mass points and breaklines). See index10_04.shp for locations and dates of elevation data used to create this DEM. First, a tin was created from the elevation data (do to file size constraints two tins were created). Then the tins were converted to grids and merged into a single grid.
Place Keywords Mesabi, Mesabi Iron Range
Theme Keywords Digital Elevation Models, DEM, Topography
Time Period of Content The dates of the elevation data used in the creation of this grid varies from 1994 to 2004. See index10_04.shp for details on locations and dates. This grid was created October 2004 (note elevation data varies from 1994 to 2004).
Spatial Extent of the Data Mesabi Iron Range in Itasca and St. Louis Counties
Contact Person Matt Oberhelman
Contact Person Organization/Division DNR Division of Lands and Minerals
Contact Person Position Geologist/GIS Specialist
Contact Address 1525 Third Ave E.
Contact City Hibbing
Contact Zip Code 55746
Contact Voice Phone (218) 231 8465
Contact Fax Phone (218) 262 7328
Contact Email Address firstname.lastname@example.org
Core Database Element
Usage Tips This theme contains one attribute VALUE which is elevation in feet. It is useful for hydrologic and other land surface investigations, and hillshade generation Key Data Attributes Cell Value = Elevation in Feet. Remember that x,y units are in meters. Make sure you know the capabilities of your software before you do calculations involving slope. Related Tables List related shapefile: index10_04.shp index of elevation data (mass point, breakline and contour files) used to create grid
Horizontal Coordinate Scheme UTM
Horizontal Datum NAD83
Horizontal Units Meters
Altitude Datum Navd88
Altitude Units Feet
UTM Zone Number 15
Cell Width 5 meters
Cell Height 5 meters