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A rigorous ecological monitoring program has been implemented to evaluate potential effects of underground coal mining on the aquatic environment. The program has been designed to collect pre-mining data and to provide a means to monitor and predict ecological impacts to surface waters. A custom ArcGIS/ArcInfo application has been developed for this purpose that utilizes dynamic segmentation to map stream habitat types throughout extensive mining areas. The application utilizes a custom designed interface for data entry, GPS data, biologic data, and digital video for production of the project database. Geoprocessing is utilized to determine which features have been mined. This paper will evaluate the time and cost benefit of process automation through use of ArcGIS/ArcInfo and dynamic segmentation and illustrate the powerful data analysis tools that have been made available through the development of the custom GIS application.