System and method for providing accurate local maps for a central service

A system and method that provides economical and accurate data for a selected area (jurisdiction) from a centralized location by generating a base-line map from commercially available information and distributing portions of this map to local jurisdictions. Inaccuracies and other information only available locally are stored in a local database. Periodically these databases are uploaded to a central location and reconciled with the base line map. Advantageously, such reconciliation may include a rules based reconciliation wherein the geo-coordinates from the commercial vendors are used and applied to the local data. A new base line map is then generated and distributed back to the local user. In this manner, the local user has an accurate yet economical map.