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"GeoComm was a crucial partner as Iberia Parish upgraded our 911 dispatch
maps and established a Parish GIS program. GeoComm’s knowledge of public
safety mapping requirements and effective project management helped us better
understand many opportunities to improve our work flows and effectiveness. In
comparing our addressing work to the GeoComm street layer, we found that their
field work was very accurate and thorough, mapping private roads we were not
aware of."
-Prescott Marshall, 9-1-1 Director Iberia Parish
GIS
Iberia Parish Reduces Response Times with More
Accurate GIS Data
Nestled in the heart of Cajun Country you will find Iberia Parish, Louisiana.
Home to over 73,000 people, Iberia Parish is strategically situated on the
Gulf of Mexico between New Orleans and Houston. The parish covers over
1,000 square miles, with almost half of that being water. The Iberia Parish
9-1-1 Communications District takes providing emergency services
seriously. So, in early 2010 they committed to a GIS project to develop
accurate roads and address point data for the Parish.
Iberia Parish’s map data was guiding responders to within approximately
50-100 yards of an emergency caller. While this was relatively close to
the caller, it was not always easy to locate the caller, making it feel like it
was taking longer to respond to those in need. Iberia Parish’s goal was for
caller location accuracy to increase so responders could pinpoint where
help was needed and get there faster.
"GeoComm was a crucial partner as Iberia Parish upgraded our 911
dispatch maps and established a Parish GIS program. GeoComm’s
knowledge of public safety mapping requirements and effective project
management helped us better understand many opportunities to improve
our work flows and effectiveness. In comparing our addressing work to
the GeoComm street layer, we found that their field work was very
accurate and thorough, mapping private roads we were not aware of."
Prescott Marshall, 9-1-1 Director Iberia Parish.
Iberia Parish worked with GeoComm to update the accuracy of their GIS
data for emergency response. GeoComm’s project team completed the
following services:
• Road Centerline Layer Field Collection and GIS Updates
• Emergency Service Zone (ESZ) Boundary Layer Updates
• Address Point Layer Development
• Address Assessment
• GIS Data Maintenance Workflow Development and Training
To begin improving the location accuracy of Iberia Parish’s maps,
GeoComm’s GIS staff collected a GPS stream for all the roads in Iberia
Parish and collected GPS points for all the habitable structures on those
roads. Fieldworkers noted the street name and visible house numbers for
the habitable structures. After the field collection was complete,
GeoComm used the collected points to update and enhance Iberia
Parish’s road centerline layer. These updates ensured that addresses
plotted on the correct side of an intersection, in the correct ESZ, and in
the correct community.
Throughout the field collection process, GeoComm completed an address
assessment review of all the incorporated and unincorporated addresses
in Iberia Parish. This assessment identified addressable structures that
did not fit in with the addressing scheme of the surrounding structures or
specific industry based addressing guidelines. These guidelines ensure
that odd and even house numbers are consistently on the same side of
the road, the sequencing scheme is always consistent, and that
addresses are not stacked or used multiple times; all critical data quality
for plotting emergency calls on a map. The address assessment report
was given to Iberia Parish for review and for targeting areas in the Parish
that are candidates for potential readdressing.
Once fieldwork was complete, GeoComm updated the GIS data attributes
and spatial accuracy using the provided resources of Master Street
Address Guide (MSAG), Automatic Location Information (ALI) database,
and through communication with Iberia Parish emergency management
personnel. Once the attributes were updated, GeoComm submitted the
final maps to Iberia Parish to be reviewed and approved before loading
them into the Parish’s 9-1-1 System.
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