Electric Utility Service Areas, Minnesota, 2014

This page last updated: 05/30/2014
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 Minnesota Geospatial Information Office (MnGeo)
Title Electric Utility Service Areas, Minnesota, 2014
Abstract This dataset shows electric utility service area boundaries for the State of Minnesota. The original source data were lines hand-drawn on county highway maps. The maps were scanned and georeferenced to serve as a background for on-screen digitizing. The utilities were then given an opportunity to review and correct the service areas. Changes filed with the Public Utilities Commission (eDockets) were also reviewed to update the areas.
Purpose The purpose of the project was to convert existing electric utility service area boundaries from paper to digital format in order to provide a statewide view of the service areas. Public Utility Commission eDocket filings can then be used to maintain this dataset.

Other goals and objectives:
1. Create a consistent, state-wide GIS dataset of EUSA, as vetted by the utilities
2. Achieve a positional accuracy of 1:24,000 (+/- 60 feet)
3. Identify (and eventually resolve) service area boundary issues
4. Create a cost-effective process for tracking and updates
5. Make data easily accessible
Time Period of Content Date 05/01/2014
Currentness Reference The dataset includes service area boundary changes that are still being updated and are under review.
Progress In work
Maintenance and Update Frequency Irregular
Spatial Extent of Data Minnesota
Bounding Coordinates -97.23
-89.53
49.37
43.5
Place Keywords Minnesota, MN
Theme Keywords utilitiesCommunication, boundaries, electric utility service area, electrical utility, electric utilities, electrical utilities
Theme Keyword Thesaurus ISO 19115 Topic Category
Access Constraints none
Use Constraints See Disclaimer field for complete use conditions.
Contact Person Information Michelle Rebholz, Supervisor
Minnesota Public Utilities Comission
121 7th Place E, Suite 350
St. Paul, MN  55101
Phone: 651-201-2206
Email: michelle.rebholz@state.mn.us
Browse Graphic Click to view a data sample
Associated Data Sets Electrical Utility Service Area Boundaries (lines) - tracks corrections.
Electrical Utility Service Area Dockets (areas) - service area changes filed with PUC (not complete).
Electrical Utility Service Area Exceptions (points and areas) - service area exceptions as provided by utilities.
Exceptions are areas where a utility is serving customers in another utility's service area.

For other public utility and telecommunications infrastructure geospatial data for Minnesota, see MnGeo's first-stop information page: www.mngeo.state.mn.us/chouse/utilities_telecommunication.html

Section 2 Data Quality
Attribute Accuracy Map attributes were checked after digitizing by visual comparisons with the original printed map. Each utility was given an opportunity to review their information. The MMUA_NAME and FULL_NAME fields are consistent with the 2010 Minnesota Municipal Utility (MMUA) Directory. Summaries were used to review most major attributes. Since the dataset is still being edited, no multiple fields checks were completed on the boundaries layer.

The field ADJ_UTILITY was added late in the process and contains blanks.
Logical Consistency EUSA_Topology Properties:
Boundaries - Must Be Covered By Boundary Of - Service_Areas
Boundaries - Must Not Have Dangles
Service_Areas - Must Not Overlap
Service_Areas - Must Not Have Gaps
Completeness Completed through utility submissions as of 5/1/14.
Horizontal Positional Accuracy Overall it is the same as the county highway maps and base map layers which were originally used to locate boundary lines. The accuracy of the boundary linework hand-drawn on the paper maps is approximately +/- 350 feet. When complicated boundaries were encountered, they were typically simplified by the vendor doing the update.

As boundaries are updated digitally using more detailed and accurate base information, the goal is to achieve an accuracy of +/- 60 feet.

The gaps and overlaps in the dataset result from utilities submitting boundary changes individually without working with the adjacent utility.
Vertical Positional Accuracy not applicable
Lineage The origins of the dataset are the electric utility service area boundaries that had been hand-drawn on Minnesota Department of Transportation county highway maps on file with the Minnesota Department of Commerce in 2004. The maps were scanned, geo-referenced and digitized on screen. After the GIS dataset was created, the utilities were given several opportunities to update and improve the positional quality of the service areas. In 2013, the Public Utilities Commission requested that utilities submit the final changes by June 1, 2013. Those corrections were completed and the Commission made a determination that the dataset represented the official service area boundaries for the State of Minnesota on April 1, 2014.

There were a number of key steps:

----- 2004 -----
The electric utility service area boundaries had been hand-drawn on county highway maps. The map scale is 1:63,360 for counties outside the Twin Cities metropolitan area, and 1:48,000 for counties within the metro area. Each map was scanned and converted to TIF and JPEG formats at 200 and 400 pixels-per-inch (PPI) by Historical Information Gatherers, Inc.

MnGeo staff geo-referenced the 400 DPI JPEG images using ArcMap 8.2 software. Electric utility service area boundaries were on-screen digitized using the images in the background as reference. Each polygon was coded with the name of the utility. The information was in Esri coverage and shapefile format at the end of this step.

When boundary lines followed public land survey (PLS), roads, lakeshores or other reference lines, the lines were snapped to the appropriate reference GIS layer:
- DNR PLS40: deli.dnr.state.mn.us/metadata/pls_fortypy3.html
- Mn/DOT BaseMap layers for roads, railroads, lakes, rivers (and possibly others): www.dot.state.mn.us/maps/gdma/gis-data.html

----- 2005 -----
Converted data to personal geodatabase format using ArcGIS 9.1. This was done since the geodatabase format supports COGO (traverse), transactions and versioning.

The geodatabase is composed of two feature data sets and one table: 1. EUSA, 2. PLS and 3. Docket_Table.

1. EUSA feature data set has three components:
Boundaries - a feature class of service area boundaries
Service_Areas - a feature class of service areas as described in this metadata record.
EUSA_Topology - The topology relationship between Boundaries and Service_Areas (see EUSA_Topology Properties below).

2. PLS (Public Land Survey) feature data set contains the 87 feature classes (1 feature class for each of Minnesota's 87 counties) of Department of Natural Resources PLS 40, quarter-quarter section dataset, documented at: deli.dnr.state.mn.us/metadata/pls_fortypy3.html

3. Docket_Table - This table contains the docket information from the original maps which were scanned.

EUSA_Topology Properties:
Boundaries - Must Be Covered By Boundary Of - Service_Areas
Boundaries - Must Not Have Dangles
Service_Areas - Must Not Overlap
Service_Areas - Must Not Have Gaps

----- 2006-2009 -----
Assessed utilities' mapping capabilities.
Delivered review materials to each utility in a format appropriate for their mapping capabilities (GIS, CAD, PDF or paper maps).
Requested that utilities review their boundaries with the adjoining utility and indicate whether they agreed or disagreed.
Adjusted boundaries based on corrections received from the utilities.

----- 2010 -----
Adjusted electric utility service areas based on corrections received from the utilities. A boundary table was created which tracked utility agreement/disagreement with an adjoining utility. New corrections were cataloged. Technical assistance was provided to the utilities to help them through the process of submitting their changes. New maps were created and distributed to the utilities.

----- September 2012 -----
Continued to adjust service areas based on materials received from the utilities. In preparation for the public release, PUC announced that the Commission would make a determination on the boundaries.

A website was created: www.mngeo.state.mn.us/eusa. The website has the ability to link to PUC's eDockets system from the dockets layer (years: 1999-2010) or the docket table (years: 1976-2005).

Working from smallest to larger, gaps and overlaps were reviewed for elimination. Errors under the accuracy (+-40 feet) of the data were typically removed and boundaries changed to the corrected boundary. Larger errors were sometimes repaired if no visible structures were affected and the boundaries were in general agreement.

The gaps and overlaps were created by utilities correcting boundaries independently. Sometimes these areas are legitimate disagreements but others could be quickly resolved if the utilities reviewed each other's boundaries.

----- 2013 -----
Continued to adjust service areas based on materials received from the utilities earlier in the year. The Public Utilities Commission requested that the utilities submit their final corrections by June 1, 2013.

----- 2014 -----
Continued to adjust service areas based on materials received from the utilities. The corrections were submitted to the Public Utilities Commission to make a determination on the data. As of April 1, 2014, the data represents the official service territory boundaries for the State of Minnesota.

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 Electric Utility Service Areas (shapefile - eusa.shp):
ELEC_COMP - Utility name.
COMMENTS - Open text field.
MUNICIPAL - Is it a municipal utility? Yes or No.
ABBREV - Utility name abbreviation.
MMUA_NAME - Minnesota Municipal Utilities Association 2010 Membership Directory utility name.
FULL_NAME - Full name of utility.
TYPE - Type of utility company: Municipal, Cooperative and Investor-Owned.
STREET - Street where utility company is located.
CITY - City where utility company is located.
STATE - State where utility company is located.
ZIP - Zip code where utility company is located.
ZIP4 - Zip +4 code for utility company
PHONE - Phone number for utility company.
WEBSITE - URL for utility company.
EMAIL - Email address for utility company
Detailed Citation
Table Detail:

Section 6 Distribution
Publisher Minnesota Geospatial Information Office (MnGeo)
Publication Date 05/01/2014
Contact Person Information Norman Anderson, Senior Research Analyst
Minnesota Geospatial Information Office
658 Cedar Street, Room 300
St. Paul, MN  55155
Phone: 651-201-2483
Email: gisinfo.mngeo@state.mn.us
Distributor's Data Set Identifier eusa14 - Electric Utility Service Areas 2014
Distribution Liability 1. MN Dept. of Commerce and the State of Minnesota:

DISCLAIMER OF LIABILITY: With respect to documents and information on this page, neither the State of Minnesota, the Minnesota Department of Commerce, nor their employees and contractors make any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose with respect to the data available on this page. Additionally, the State of Minnesota, the Minnesota Department of Commerce and their employees and contractors assume no legal liability for the accuracy, completeness, or usefulness of any information, apparatus, product, data, or process disclosed herein and do not represent that use of such information, apparatus, product, data, or process would not infringe on privately owned rights.

2. MnGeo's data disclaimer is online: www.mngeo.state.mn.us/chouse/disclaimer.html
Ordering Instructions 1. Downloadable data set

This data set is distributed on the internet by clicking below after Online Linkage. Doing so will tell your browser to start downloading a compressed 'ZIP' file which will contain the following:

- Shapefile (.shp, .shx, .dbf, .prj)
- Documentation (.html, .xml) for the data set
- Disclaimer

For help with unzipping the download file, see: www.gda.state.mn.us/resource.html?Id=16253#compress

2. Online map viewer: www.mngeo.state.mn.us/eusa/
Online Linkage I AGREE to the notice in "Distribution Liability" above. Clicking to agree will either begin the download process or link to download information. See "Ordering Instructions" above for details.

Section 7 Metadata Reference
Metadata Date 05/30/2014
Contact Person Information Nancy Rader, GIS Data Coordinator
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: 05/30/2014
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