Where are all the Gas Stations?. 2008 Hurricane Season Lessons Learned Workshop Louisiana’s Geospatial Response to Hurricanes Gustav and Ike January 29, 2009 State Library of Louisiana. Hurricane Gustav. Nearly 2 million people evacuated from south Louisiana in the days before Gustav
2008 Hurricane Season Lessons Learned Workshop
Louisiana’s Geospatial Response to Hurricanes Gustav and Ike
January 29, 2009
State Library of Louisiana
2. A 5–digit Zip Code
Multiple names (Florida Bl/ US 190)
Zip code errors
New Streets/ addresses
2. GIS Data Currency of database Location of street center lines
Does database support multiple names
A Geocoding “Hit” Does Not Mean a Correct Location!
There were ~3400 gas stations and
~500 were unmatched (15%).
Street name and zip code do not match
All of these sources had the same approximate error rate
Google Street View
These provide other options for finding targets
Search by name of business
Verify phone numbers
These have the most up to date GIS data
~ 50 % of calls were
successful in verifying a location
Gold – reserved for declared emergencies for limited recipients
These sources were difficult to work with without prior knowledge of the data organization and format.
A commitment to insure addresses and other data are complete, accurate, and up to date needs to be sustained
GPS locations are accurate regardless of addressees
Procedures need to be implemented to collect GPS locations for all gas stations in the database
Web access, whether public or secure, can provide direct access to data for intended parties
During emergency operation everyone needs
to be on the same page!
GPS locations should be gathered for as many critical databases as possible.
These locations need to be maintained by the agencies that “own” the data.
QA, QC should be a constant commitment. Prior to hurricane season each agency should ensure the quality of their data.
Web Services make an excellent means for sharing and distributing data. These assets should be prepositioned before hurricane season.