Current through Register Vol. XLI, No. 50, December 13, 2024
Section 189-3-8 - Computer Mapping Systems Computerization of the map and parcel data enhances the county assessors' capabilities to manage, analyze, summarize, and display geographically referenced information. Digital cadastral map layers and parcel data are easily shared, allowing various users to manipulate and selectively retrieve layers of parcel and other information and to produce composite maps with only the data needed by each. Such sharing also reduces the duplication of effort inherent in separate, possibly incompatible, map systems. See Standard on Digital Cadastral Maps and Parcel Identifiers (lAAO 2003).
8.1. Geographic Information Systems (GIS). -- The preferred automated mapping system for maintaining and publishing digital map and parcel data is a geographic information system. It is recommended that a successfully deployed cadastral geographic information system meet the following requirements: 8.1.a. Geo-referenced. -- All mapping layers are geo-referenced to a common coordinate system.8.1.b. Edge-matched. -- Parcel polygons are seamless across all jurisdictions and tax district boundaries for the entire county.8.1.c. Parcels Linkable to Databases. -- Parcel boundary polygons are topologically validated and linkable to external assessment databases via unique property identification numbers.8.1.d. Computer-Generated Maps. -- Finished tax maps are digitally produced and published in accordance with map design and layout rules set forth in this regulation.8.1.e. Continual Maintenance. -- Tax maps are continually maintained in a digital environment.