Abstract: A GIS-based system and method for simulating, viewing, analyzing and managing emergency or other events is provided. A multi-layered map of the event location and surrounding area is displayed by a computer. A cordon area around the event location may be displayed as an additional layer and affected facilities may be highlighted. Traffic control points (TCPs) around the periphery of the cordon area may also be identified on the map. Thus, emergency personnel may be efficiently dispatched to assist evacuations and restrict access to the cordon area. If the event includes a hazardous material spill or threat, the computer may generate a plume dispersion model and display the estimated plume as another layer on the map whereupon an extended cordon area may be displayed and additional affected facilities and new TCPs highlighted. Real-time information may be received from on-scene personnel, remote sensors and other means and the map may thus be kept current.