Geographic Names Information System (USGS) for Minnesota in GIS Format

This page last updated: 04/09/2007
Metadata created using Minnesota Geographic Metadata Guidelines


Metadata Summary

Originator United States Geological Survey and Land Management Information Center, Minnesota Planning
Abstract The Geographic Names Information System (GNIS), developed by the United States Geological Survey in cooperation with the U.S. Board of Geographic Names, provides primary information on location of all known places, features, and areas in the United States which are identified by a proper name. Specifically, information on this file is from the National Geographic Names Data Base, which contains names of all places, features, and areas which appear on the USGS 7.5-minute quadrangle map series. The Land Management Information Center has converted a subset of the information in the original USGS ASCII files into an Arc/INFO point coverage.
Browse Graphic none available
Time Period of Content Date 1990
Currentness Reference
Access Constraints None
Use Constraints None
Distributor Organization Minnesota Land Management Information Center (LMIC)
Ordering Instructions This data set is distributed on the internet by clicking below after Online Linkage. Doing so will tell your browser to start downloading a self-extracting 'ZIP' file which will contain the following:

- Arc Export files (.e00) of coverages and/or INFO export files (.e00)
- Metadata (.htm) file for the dataset
- NOTICE.RTF, an important notice about this data set that can be read by most word processing software, and an ascii text version of the same notice (NOTICE.TXT)

After downloading this self-extracting 'zip' file (which will have an 'exe' extension), simply execute (run) the file. (For example, you can double click it from Windows Explorer or File Manager). Doing this will automatically extract the files described above.
Online Linkage Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" in Section 6 of this metadata.

Full Metadata

Geographic Names Information System (USGS) for Minnesota in GIS Format

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   Top of page
Originator United States Geological Survey and Land Management Information Center, Minnesota Planning
Title Geographic Names Information System (USGS) for Minnesota in GIS Format
Abstract The Geographic Names Information System (GNIS), developed by the United States Geological Survey in cooperation with the U.S. Board of Geographic Names, provides primary information on location of all known places, features, and areas in the United States which are identified by a proper name. Specifically, information on this file is from the National Geographic Names Data Base, which contains names of all places, features, and areas which appear on the USGS 7.5-minute quadrangle map series. The Land Management Information Center has converted a subset of the information in the original USGS ASCII files into an Arc/INFO point coverage.
Purpose The GNIS is part of a set of digital cartographi/geographic data files produced by the United States Geological Survey as part of the National Mapping Program. The Land Management Information Center created the GIS version of the file to provide a source of information for digital cartographic labeling.
Time Period of Content Date 1990
Currentness Reference
Progress Complete
Maintenance and Update Frequency None planned
Spatial Extent of Data Minnesota, Statewide
Bounding Coordinates -97.5
-89.0
49.5
43.0
Place Keywords Minnesota, Statewide
Theme Keywords imageryBaseMapsEarthCover, Geographic Names, Placenames, Features, Places, Areas
Theme Keyword Thesaurus ISO 19115 Topic Category
Access Constraints None
Use Constraints None
Contact Person Information Susanne Maeder,
Minnesota Land Management Information Center (LMIC)
300 Centennial Building; 658 Cedar Street
St. Paul, Minnesota 55155
Phone: 651.201.2488
FAX: 651.296.3698
E-mail: clearinghouse@mnplan.state.mn.us
Browse Graphic none available
Browse Graphic File Description
Associated Data Sets Federal data sets within the Geographic Names Information System include:

National Geographic Names Data Base (the source of this GIS coverage)
USGS Topographic Names Bata Base
Reference Data Base
Board of Geographic Names Data Base
USGS Digital Gazetteer

Some of this information is available online at:
http://geonames.usgs.gov/gnishome.html

Associated GIS Datasets include the USGS Digital Raster Graphic (DRG) representation of the quad map, Digital Line Graph data, etc.

 
Section 2 Data Quality Information Top of full metadata Top of page
Attribute Accuracy
Logical Consistency
Completeness Contains all names of areal, linear, and point features appearing on USGS 7.5-minute topographic maps, with the exception that only the primary occurrence of each feature is contained on the GIS file. (See lineage for a description of what was extracted).
Horizontal Positional Accuracy Point location is based upon the Latitude/Longitude reported on the USGS file, in degrees, minutes, and seconds. USGS reports that the Latitude/Longitude value of each point is accurate to plus or minus 5 seconds. If the point represents an areal feature such as a city, the primary point is generally located in the center of the area. The determination of 'center' was subjective. In other situations, the location of a major town feature such as the town hall was used to locate the point. Additional, secondary points might also be used to represent the same area, especially if it appeared on more than one quad map. For linear features such as rivers, the primary locator point is at the mouth of the river. Secondary points appear for that river on each quad map where it appears. In creating the GIS coverage, LMIC extracted only the primary location features.
Vertical Positional Accuracy Elevation information is reported only if it is reported on the USGS 7.5-minute topographic map. Vertical positional accuracy reflects that of the National Mapping Program.
Lineage The source data for the Minnesota GNIS GIS point file is the USGS-GNIS data base, 'National Geographic Names Database', which is an ascii text file. Procedures to create the point coverage were as follows:

1. Certain data elements were extracted from the original USGS table. Not all data fields from the original file were used. Latitude/Longitude values were converted to Universal Transverse Mercator (UTM), Zone 15. Minnesota standard county codes and 7.5-minute quadrangle codes were added to the file.

2. Secondary data points were weeded out of the data set. The USGS National Geographic Names Data Base contains multiple location points for areal and linear features. In the case of an areal feature, the primary data point is the one determined subjectively to be at the center of the feature, or the one describing the location of a prominent feature within an area, such as the town hall in a town. In the case of a linear feature, the original file would contain at least one point on every 7.5-minute quad where the feature is displayed. Where the linear feature is a river, the point representing the mouth of the river is defined as the primary feature. Secondary points would appear on all upstream quads. For the Minnesota GIS file, only the points representing primary features were extracted (i.e., one point per feature). (In practical terms, that means that there is no point representing the Mississippi or other border rivers which flow out of the state, and there is only one point representing the Minnesota River, the Cottonwood River, etc.)

3. The GIS point coverage was created. The UTM locations from the data table were used to generate an Arc/Info point cover. Attribute information was then moved over from the original table to the .PAT file. The GIS file was later converted from NAD27 to NAD83.
Source Scale Denominator 24000
 
Section 3 Spatial Data Organization Information Top of full metadata Top of page
Native Data Set Environment Arc/INFO 7.1.1
Geographic Reference for Tabular Data
Spatial Object Type Point
Vendor Specific Object Types Point
Tiling Scheme None (statewide cover)
 
Section 4 Spatial Reference Information Top of full metadata Top of page
Horizontal Coordinate Scheme UTM
Ellipsoid GRS80
Horizontal Datum NAD83
Horizontal Units Meters
Distance Resolution
UTM Zone Number 15E
 
Section 5 Entity and Attribute Information Top of full metadata Top of page
Entity and Attribute Overview The GNIS Point Attribute table contains the following data fields:

DATAFILE NAME: GNIS.PAT
16 ITEMS: STARTING IN POSITION 1
COL ITEM NAME WDTH OPUT TYP N.DEC ALTERNATE NAME
1 AREA 8 18 F 5
9 PERIMETER 8 18 F 5
17 GNIS# 4 5 B -
21 GNIS-ID 4 5 B -
25 NAME 100 100 C -
125 FCLASS_CODE 3 3 I -
128 FEATURE_CLASS 9 9 C -
137 COUNTY_CODE 2 2 I -
139 STATE_FIPS 2 2 C -
141 COUNTY_FIPS 3 3 I -
144 XUTM 6 6 I -
150 YUTM 7 7 I -
157 LATLONG 15 15 C -
172 SOURCE_LATLONG 15 15 C -
187 ELEVATION 4 4 I -
191 MINN_Q024_CODE 4 4 I -

************************************************

AREA - Standard Arc internal field; zero for point file
PERIMETER - Standard Arc internal field; zero for point file
GNIS# - Standard Arc internal identifier
GNIS-ID - Standard Arc identifier
NAME - Name of feature on USGS 7.5-minute quadrangle map
FCLASS_CODE - USGS feature class code (numeric)
FEATURE_CLASS - USGS feature class description (text)
COUNTY_CODE - State of Minnesota 2-digit county code (see county.e00), calculated from the FIPS code on the original file.
STATE_FIPS - State FIPS Code
COUNTY_FIPS - County FIPS Codes for Minnesota
XUTM - UTM Northing Value (Calculated by LMIC from Lat/Long value on the original file)
YUTM - UTM Easting Value (Calculated by LMIC from Lat/Long value on the original file)
LATLONG - Latitude/Longitude of feature
SOURCE_LATLONG - Source of Latitude/Longitude Measurement
ELEVATION - Elevation of feature, if known
MINN_Q024_CODE - Minnesota Code for USGS 7.5-minute quadrangle map (see mn_q024.e00)
Entity and Attribute Detailed Citation US GeoData: Geographic Names Information System Data Users Guide
(National Mapping Program Technical Instructions Data Users Guide 6)
Department of the Interior, U. S. Geological Survey. Reston, Virginia, 1987.
 
Section 6 Distribution Information Top of full metadata Top of page
Publisher Minnesota Land Management Information Center (LMIC)
Publication Date 1992
Contact Person Information Susanne Maeder

Minnesota Land Management Information Center (LMIC)
300 Centennial Building; 658 Cedar Street
St. Paul, Minnesota 55155
Phone: 651.201.2488
FAX: 651.296.3698
E-mail: clearing.house@state.mn.us
Distributor's Data Set Identifier gnis
Distribution Liability Limitations: Although extensive effort has been made to produce error free and complete data, all geographic information has limitations due to the scale, resolution, date and interpretation of the original source materials. You should consult available data documentation (metadata) for these particular data to determine their limitations and the precision to which they depict distance, direction, location or other geographic characteristics. These data may be subject to periodic change without prior notification.

No Warranty: These data are provided as is, without any warranty whatsoever, including but not limited to any warranty as to their performance, merchantability, or fitness for any particular purpose.

Liability: The entire risk as to the results of the use of these data is assumed by the user. LMIC is not responsible for any interpretation or conclusions based on these data made by those who acquire or use it. LMIC shall not be liable for any direct, indirect, special, incidental, compensatory or consequential damages or third party claims resulting from the use of these data, even if LMIC has been advised of the possibility of such potential loss or damage. In States that do not allow the exclusion or limitation of incidental or consequential damages, you may not use these data.

Redistribution Conditions: In obtaining these data from LMIC, it is understood that you and/or your organization have the right to use them for any internal purpose. If you modify them, you should document those changes in a metadata record that should accompany all redistributed data. If you transmit or provide these data in any form to another user, the data MUST be accompanied by a copy of this disclaimer and all documentation provided with the original data set including the full metadata record.

Data Delivered on Electronic Media: If these data have been requested from LMIC on magnetic media, CD-ROM or any other physical media, LMIC will deliver this product in the computer-readable format agreed upon with the requestor. LMIC will re-issue these data if they are determined unreadable by correctly adjusted computer input devices, or when the medium is delivered in a damaged condition. Requests for re-issue of this digital data product must be made within 30 days of the date shipped from LMIC.
Transfer Format Name Arc Export
Transfer Format Version Number 7.1.1
Transfer Size 1.4 MB in self-extracting zip (.exe) format; 7.2 MB when expanded
Ordering Instructions This data set is distributed on the internet by clicking below after Online Linkage. Doing so will tell your browser to start downloading a self-extracting 'ZIP' file which will contain the following:

- Arc Export files (.e00) of coverages and/or INFO export files (.e00)
- Metadata (.htm) file for the dataset
- NOTICE.RTF, an important notice about this data set that can be read by most word processing software, and an ascii text version of the same notice (NOTICE.TXT)

After downloading this self-extracting 'zip' file (which will have an 'exe' extension), simply execute (run) the file. (For example, you can double click it from Windows Explorer or File Manager). Doing this will automatically extract the files described above.
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 Top of full metadata Top of page
Metadata Date 04/09/2007
Contact Person Information Susanne Maeder,
Minnesota Land Management Information Center (LMIC)
300 Centennial Building; 658 Cedar Street
St. Paul, Minnesota 55155
Phone: 651.201.2488
FAX: 651.296.3698
E-mail: clearing.house@state.mn.us
Metadata Standard Name Minnesota Geographic Metadata Guidelines
Metadata Standard Version 1.2
Metadata Standard Online Linkage http://www.lmic.state.mn.us/gc/stds/metadata.htm


This page last updated: 04/09/2007