Oklahoma is a crossroads of North America's petroleum product pipelines. Pipeline operators have recently realized the need to deal with spills into surface water sources. While Oklahoma has a relatively low population density, most of the municipal water supplies are from surface reservoirs. These lakes and rivers also provide habitat for a wide variety of species. To address the need for a rapid response system, a major pipeline company in Oklahoma, with the help of the OSU Geography Department, has built a detailed GIS using ArcView GIS. The data was acquired from public domain, proprietary, and GPS field survey sources.