The Minnesota Electric Transmission Mapping Project has developed two
geographic information system data sets, electric transmission lines
and substations, that have been used to make a statewide map. The
electric transmission network information consists of transmission
lines, with associated substations, designed to handle 60 Kilovolts or
greater.
Each
utility company was mailed a request for the facility information which
they could provide in either digital or paper form. The responses
varied significantly in quality and quantity. In addition, the
companies expressed concerns about providing the information because of
security concerns. Map users are strongly encouraged to read the data
quality section of the dataset documentation at http://www.lmic.state.mn.us/chouse/metadata/elec_trans07.html . The dataset was last updated in
2007 -- most changes were to improve the positional accuracy of lines
and substations from the 2003 dataset, and several new lines were added
in the southern and western areas of the state.
The Minnesota Electric Transmission
Mapping Project is a collaborative effort between the Environmental
Quality Board and the Land Management Information Center (both part of
the Minnesota Department of Administration) and the Minnesota
Department of Commerce.
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