GIS is an analytical tool that allows an operator to view map layers on a computer screen while accessing databases of the map features. By viewing the map layers simultaneously, one can analyze relationships within and between the different layers.

GIS integrates data from different sources in a multitude of formats to represent any area within the region. Scenarios can be created to represent changes in the landscape, infrastructure, and populations.

GIS is used in-house by the SPC for a multitude of activities within the various departments. SPC also provides GIS data to its planning partners, transportation agencies, transit operators, consulting firms, businesses, environmental agencies, and various offices of federal, state, county, and municipal government. With over 60 map layers, SPC has one of the largest collections of comprehensive GIS data for the 10-county region.

SPC's Unified GIS

In 2002, SPC launched a collaborative effort to upgrade GIS data and operations across the region. Not only does this Unified GIS aid in establishing a single, regional data set representing the geography, topography, and land use for the entire ten-county region, it also establishes a working relationship with the region's GIS users. This cooperative process involves SPC's GIS staff and activities collaborating with local governments and planning partners to develop the following:

• Technical and interoperability standards
• Consistent information categories
• Protocols for data development
• Data exchange agreements

SPC is expanding their relationships with GIS users in the region, both public and private, to address issues, share data, and participate on region-wide activities to simplify the development and availability of accurate GIS data.

For a more detailed assessment of recent GIS-related activities, please soo our Recent Activities page.

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Regional GIS Assessment

As a first step in implementing the Unified GIS, SPC, with assistance from staff at the Geospatial Technology Program within Pennsylvania State University's College of Agricultural Sciences, completed a brief Regional GIS Assessment for the 10-county region. SPC met with staff at the planning, assessment, 911, and other departments at each county and at the City of Pittsburgh and conducted short interviews concerning the status of existing or planned GIS activities. The report gives a general assessment of county GIS programs and presents recommendations toward a long-term strategy for the counties. For a copy of the report, click SPC GIS Assessment Report Summer 2003 (PDF Format--large file, 2.86M).

For a more detailed assessment of recent GIS-related activities, please soo our Recent Activities page.

For additional information on GIS activities at SPC, please call Kirk Brethauer at (412) 391-5590 x 347 or e-mail kbrethauer@spcregion.org.

GIS-Related Documents

- Western PA LIDAR

- Download a list of SPC GIS Data (PDF Format)

- Land Cover Tables (PDF Format)

- Download the Complete "SPC GIS Data Dictionary" (PDF Format)

- GIS Metadata (External Site)

To access the above files, you must have Adobe Acrobat Reader installed. If you don't have Acrobat Reader, it's available as a free download from Adobe.

For additional information on GIS activities at SPC, please call Kirk Brethauer at (412) 391-5590 x 347 or e-mail kbrethauer@spcregion.org