A Prototype for Enterprise GIS

An increasing number of institutions are challenged with implementing robust geographic information system (GIS) capabilities for a large number of individuals through informationsharing and interconnected networks. In the past, numerous technological roadblocks hampered the successful implementation of enterprise GIS (EGIS). With the advent of high-speed networks; increasingly fast computers; intelligent, spatial-data serving technologies; improved data architecture; and advances in GIS software; the newest challenge involves integration of the various technological and institutional components. This integration can be viewed as an inevitable stage in the evolution of GIS. We propose an EGIS design based on three elements: 1) distinct stakeholder roles, 2) a complete geospatial data cycle, and 3) proven data warehouse concepts. Four groups of stakeholders play key roles: data providers, data managers, GIS users, and customers. A complete geospatial data cycle ensures that all aspects of data and workflow are implemented and integrated. Spatial data warehouse design guides the flow of work and data through three steps: staging, storage, and delivery. We detail a five-step methodology for implementation of EGIS: 1) design specification, 2) data resource evaluation, 3) spatial data warehouse design, 4) physical system architecture design, and 5) implementation. This five-step process has been effective in the implementation of the Cerro Grande Rehabilitation Project (CGRP) GIS. The goal of the CGRP-GIS is to provide EGIS capability in response to the May 2000 Cerro Grande wildfire, which forced evacuation of the town of Los Alamos and Los