The U.S. Geological Survey and Oakland County have cooperated on two major hydrologic investigations in recent years. The first project, from 1998 to 2000, studied the occurrence of arsenic, nitrate, chloride, and other contaminants in ground water. The second project, from 2001-2004, involved a more comprehensive study of the status and trends in water quantity and quality in Oakland County.
These studies have produced two overview reports (in addition to an older report produced in 1972), three technical reports, a data report, two county-wide fact sheets, and twenty-five township-level fact sheets. These reports are available online through the hyperlinks below.
In addition, streamflow and stream water quality were measured at 14 sites and lake water quality was measured in 12 lake basins. Continuous streamflow monitors were operated at 12 sites, and continuous surface-water-quality monitors operated at 7 sites. Links to the site descriptions and data available for each site are provided below, by basin.