Metadata for the

Lake Superior Bathymetry

Developed by

Natural Resource Research Institute

These metadata were created using the Minnesota Geographic Metadata Guidelines .

Go to Section:
1. Identification Information
2. Data Quality Information
3. Spatial Data Organization Information
4. Spatial Reference Information
5. Entity and Attribute Information
6. Distribution Information
7. Metadata Reference Information

Section 1

Identification Information

Originator Natural Resource Research Institute
Title Lake Superior Bathymetry
Abstract The Lake Superior Bathymetry file is a grid file detailing the depth of Lake Superior.
Purpose A base data layer
Time Period of Content Date 03/25/1998
Currentness Reference Date of last change to the data file
Progress Complete
Maintenance and Update Frequency As needed
Spatial Extent of Data Lake Superior
Bounding Coordinates -97.293
Place Keywords Lake Superior
Theme Keywords Lake Superior Drainage Basin, Lake Superior, depth, bathymetry
Theme Keyword Thesaurus None
Access Constraints None
Use Constraints None
Contact Person Information Gerald Sjerven, GIS Specialist
Natural Resource Research Institute
513 Miller Trunk Highway
Duluth, Minnesota 55811
Phone: (218)-720-4388
FAX: (218)-720-4219
Browse Graphic File Name none available
Browse Graphic File Description
Associated Data Sets

Section 2

Data Quality Information - - - - - - Go back to top

Attribute Accuracy See entity and attribute overview, contact NRRI
Logical Consistency There are no known topological problems
Completeness There is no known incomplete information; see entity and attribute overview
Horizontal Positional Accuracy None available
Vertical Positional Accuracy Not applicable
Lineage 1 km grid surface generated from depth point values using inverse distance weighted interpolation with 12 nearest neighbors. The data was then mapjoined and adjusted to match the shoreline.
Source Scale Denominator 547160

Section 3

Spatial Data Organization Information - - - - - - Go back to top

Native Data Set Environment Arc/INFO 7.1.2
Geographic Reference for Tabular Data None
Spatial Object Type Vector
Vendor Specific Object Types Arc, area, label point, polygon
Tiling Scheme Not applicable

Section 4

Spatial Reference Information - - - - - - Go back to top

Horizontal Coordinate Scheme Geographic (Lat. Long.)
Ellipsoid GRS80
Horizontal Datum NAD83
Horizontal Units Meters
Distance Resolution
Altitude Datum Not applicable
Depth Datum IGLD
Depth Units Meters
Cell Width 1000
Cell Height 1000
Map Projection Name Albers Equal Area
Map Projection Parameters Standard Parallel: 29.5
Standard Parallel: 45.5
Longitude Of Central Meridian: -96
Latitude Of Projection Origin: 23
False Easting: 0
False Northing: 0
Other Coordinate System's Definition Planar Coordinate Encoding Method: Coordinate Pair
Abscissa Resolution: 1
Ordinate Resolution: 1
Semi-Major Axis: 6378206.4
Denominator of Flattening Ratio: 294.98

Section 5

Entity and Attribute Information - - - - - - Go back to top

Entity and Attribute Overview Due to data source type (grid), there are no entities or attributes for this file except the depth.
Entity and Attribute Detailed Citation None

Section 6

Distribution Information - - - - - - Go back to top

Publisher Natural Resources Research Institute
Publication Date Unpublished material
Contact Person Information Gerry Sjerven, GIS Specialist
Natural Resources Research Institute
5013 Miller Trunk Hwy
Duluth, Minnesota 55811
Phone: (218)-720-4388
FAX: (218)-720-4328
Distributor's Data Set Identifier
Distribution Liability No warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. The University of Minnesota shall not be held liable for improper or incorrect use of the data described and/or contained herein.
Transfer Format Name Arc/INFO export
Transfer Format Version Number
Transfer Size
Ordering Instructions
Online Linkage Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" above.

Section 7

Metadata Reference Information - - - - - - Go back to top

Metadata Date 08/25/1999
Contact Person Information Joel Nelson, GIS Intern
Natural Resource Research Institute
5013 Miller Trunk Highway
Duluth, Minnesota 55811
Phone: (218)-720-4254
FAX: (218)-720-4328
Metadata Standard Name Minnesota Geographic Metadata Guidelines
Metadata Standard Version 2.01
Metadata Standard Online Linkage

This page last updated 08/25/1999.

Go back to top


The Lake Superior Decision Support project is coordinated through the Center for Water and the Environment at the Natural Resources Research Institute. The project is funded by the USEPA Region 5 Coastal Environmental Management Grant Program through the Minnesota Department of Natural Resources.  For comments on this project or this home page, contact George Host.  Last updated: Friday, January 18, 2002 11:43
The University of Minnesota is an equal opportunity educator and employer.
1999-2000 University of Minnesota Duluth
Natural Resources Research Institute
5013 Miller Trunk Highway
Duluth, MN 55811 (218)720.4294