This research proposes a conceptual structure for an Environmental Information System. An Eco-Systems approach is employed maintaining whole units of analysis allowing for collection and storage of information of use to regional environmental planning and design. The suggested system design incorporates some of the basic concepts of the two sub-components of the environment--natural and manmade. The system is admittedly only partially inclusive allowing for incremental incorporation of related concepts, research findings, and existing information systems. (Author/RE)