Parcel data -- digital parcel data (local government) was
considered critical by federal, state and local authorities because it
provided responders with information that told them parcel by parcel
the exact location and of property, its use, the type and value of
structures and by implication the location of people.
What are the issues for providing parcel data?
1. You need the detail of local government parcel data to locate
persons, structures determine the value of property and to identify the
property owners. This information is used by FEMA and all levels
of government in an emergency response operation for everything from
navigating to individual properties, identifying individual properties
in harms way for flooding and fires, determining land use, expediting
insurance claims, identifying and contacting individuals in proximity
to hazardous spills, etc.
2. Parcel conversion is well under way in the US with
approximately 67% of the parcels converted.
3. 80% of the people live on 20% of the land. Communities
with 150,000 probably have GIS and have converted their parcels, but
that is only 750 of over 3000 counties in the US.
4. Data that does exist can not be compiled for an entire region
at the last moment. There are too many entities involved and it
takes too long to scrub the data into a common format, not to mention
the absence of key personnel that can provide it. The data needs to be
prepublished and ready to go.
5. Rural areas need assistance with parcel conversion. This
is a long term effort and will take some planning and assistance for
state and local governments (See State Parcel Management Programs on
http://www.nationalcad.org
6. A county level inventory of the status of parcel data needs to
be complete.
Parcel Data -- FGDC Subcommittee for Cadastral Data
Parcel Data and Hurricane Isabel: A Case Study
Parcel Data and Wildland Fire Management
Parcel Management Program Brief