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Abstract
Developing and Sharing a Spatially Accurate Parcel GISTrack: Cadastral and Land Records
Author(s): Kevin Patrick Hardester
Modeled on the Orange County, Florida, geographic information system, this presentation will guide interested parties through the steps necessary to create a multilayer, multipurpose GIS through interlocal agreements. The system is built on survey control, orthorectified photography, and planimetric data to produce an accurate parcel base using coordinate geometry. This forms the foundation for the delivery of information over the LAN, Intranet, and Internet to office staff, County and city agencies, and the general public. Field data capture utilizes mobile computing with workflow management and workload balancing. In Orange County, the Property Appraiser's Office serves as the Countywide Project Management Agency for the acquisition of survey control, digital orthophotography, and planimetric data and for development and maintenance of the parcel maps. The Property Appraiser is responsible for the sharing of these databases' along with vital appraisal/assessment data over the network(s). The hardware platforms include Microsoft Windows 98, Windows NT workstations and servers, and Sun Microsystems UNIX servers. The overall software system components used are ArcInfo, ArcView, MO/IMS, SDE, VB, and Oracle. The spatial accuracy of the GIS is guaranteed plus/minus two feet, with 90 percent of points under one-foot accuracy. Other agencies add various layers of spatial data and attributes as necessary for specific applications, such as planning and traffic engineering. The major user interfaces are a Web browser and a power user-customized ArcView enterprise access program that integrates CAMA and GIS.
The overall steps to be discussed are
(a) Needs analysis (what do we want and why?)
(b) Project definition (what, when, where, and how are we going to do it)
(c) How are we going to pay for it?
(d) Project management
(e) Maintenance and evolution of the system
Kevin Patrick Hardester
Orange County Property Appraiser
200 S. Orange Ave.
Orlando, FL 32819
USA
Phone: (407)836-5072
Fax: (407)836-5985
E-mail: khardester@ocpafl.org