Hydrogeologic data collected from a crude-oil spill site near Bemidji, Minnesota, 1983-91

The U.S. Geological Survey began a research project at the site of a crude oil spill near Bemidji, Minnesota in 1983. The project is part of the U.S. Geological Survey's Toxic Substances Hydrology Program. The objectives of research at this site are to obtain an understanding of the mobilization, transport, and fate of petroleum derivatives in the shallow subsurface and to use this understanding to develop predictive models of contaminant behavior. This report presents location and altitude data for selected features at the research site, water and oil level records from observation wells collected from 1983 through 1991, geologic logs from 45 observation wells and test holes, particle-size distribution data from 45 observation wells and test holes, and precipitation records from 1948 through 1991.