Tennessee District Implements High-Resolution Aerial Imagery for 9-1-1
Tuesday, September 18, 2018 | Comments

The Shelby County (Tennessee) Emergency Communications District implemented Nearmap high-resolution aerial imagery to geocode and plot new addresses and developments into the 9-1-1 mapping systems.

The imagery will help fire and rescue, EMS and law enforcement get instant access to updated maps containing geographic information system (GIS) data needed to get to the right locations as soon as possible, a statement said.

The district is responsible for establishing local emergency telephone service, providing the network call-handling equipment, and updating the GIS data for each public-safety answering point (PSAP) within Shelby County.

Nearmap provides frequently updated, high-quality aerial captures to ensure that the district’s GIS data, geocoding and the 9-1-1 mapping systems are up to date, providing public safety and law enforcement the most accurate information. The imagery is delivered through the cloud as a subscription service and is taken at least twice a year, both leaf on and leaf off to provide different views of locations in different seasons.

Before Nearmap, Shelby County’s aerial image process required a contracted flight to photograph the county areas. Because of the high cost of capturing the images, the county purchased images once every two years, after pooling resources from various county entities.

“With our old aerial imagery provider, there were issues with mosaicking separate images together, and since the imagery was taken every two years, many rural and unincorporated areas were out of date,” said Timothy Zimmer, the GIS administrator for Shelby County’s Emergency Communications District.

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