The objective of this study is to evaluate data systems for incorporating environmental impacts into public decision-making at state, county, or community levels. The foundation of any decision process is sound, up-to-date information which is readily available. The data system should be designed specifically to meet the requirements of the decision process it serves. The development of an environmental data system begins with the decision maker, who is in need of information about different decision alternatives. These decisions are accompanied by impacts which must be evaluated. For this purpose there must by the right type of properly structured data available so that resource management modeling or simulation techniques can by used to predict impacts. This report deals with the final link in this chain--the data system.