Brownlee Reservoir is located between western Idaho and the eastern border of Oregon and is located in the upper reaches of Hells Canyon 20 miles from Cambridge Idaho. The southern portion can be located in Oregon Farewell Bend State Park or Wesier Idaho Steck Park. The basin covers 15,000 acres of land, 58 miles long and in some parts more than 300 feet deep. There are three dams built on the Snake River to generate electricity for the Idaho Brownlee Dam, Oxbow Dam, and Hells Canyon Dam. The reservoir is the most fished area in the state of Idaho and produces a large amount of fish between the two states except for the ocean. Some species of fish include flathead, catfish, crappie, bluegill, perch, smallmouth bass, trout, trout, and rainbow. With a large amount of fish produced from Brownlee Reservoir, Idaho and Oregon monitor fish and wildlife in the area. The Idaho Department of Environmental Quality and TerraGraphics Environmental Engineering conducted a study of the rivers, linking to the Snake River Complex and Hells Canyon for any signs of mercury contamination. The study included Idaho rivers such as the Payette, Boise, Weiser and Lower Salmon. Oregon's rivers include the Imnaha, Grande Ronde, Malheur, and Powder. The Snake River below Brownlee Reservoir and upstream from Boise were also included in the study, as well as samples taken from the Owyhee River. The scientists concluded that the Imnaha River performed best, due to its limited commercial area, very little industrial area and no mining. The unfiltered samples were collected in June 2006 and the first week of September 2006. Special measures were taken to collect the samples, so as not to contaminate the results. The binders wore contamination... in the center of the paper... gon. www.deq.state.id.us/media/639772-brownlee_trib_report_0607.pdf‎.Abbott, M., Lin C., Martian, P., Einerson, J. (2008). Atmospheric mercury near Salmon Falls Creek Reservoir in southern Idaho. Journal of the International Geochemical Association. Volume 23, number 3. www.sciencedirect.com/science/article/pii/Rhea, D., Farag, A., Harper., D., McConnell, E., Brumbaugh, W. (2012). Mercury and selenium concentrations in biofilms, macroinvertebrates, and fish collected from the Yankee Fork of the Salmon River, Idaho, USA, and their potential effects on fish health. Archives of environmental contamination and toxicology. Volume 64, number 1, page. 130-139.Bechard, M., Perkins, D., Kaltenecker, G., Alsup, S. (2009). Mercury contamination in Idaho bald eagles, Haliaeetus leucocephalus. Archives of environmental contamination and toxicology. Volume 83, number 5, page. 698-702.