“GeoPlatform.gov, powered by Environmental Response Management Application® (ERMA), is a web-based Geographic Information System (GIS) tool designed to assist both emergency responders and environmental resource managers who deal with incidents that may adversely impact the environment.”
An amazing amount of data available at this map.
Two examples of what interactive map can show:
Parent Group: BP Deepwater Horizon Oil Spill>Estimated Spill Trajectory>Nearshore Estimated Spill Trajectory
Layer Name: Nearshore Trajectory Estimate for 22-June-10 at 1200 CDTParent Group: BP Deepwater Horizon Oil Spill
Layer Name: BP Claim Centers