the biggest off-shore oil leak in the history of the U.S. Photo from Wikipedia Other U.S. oil spills include Lakeview Gusher (1910, Kern County, California), Exxon Valdez (1989, Prince William Sound, Alaska), and Prudhoe Bay (2006, Alaska). To date, the on-land Lakeview Gusher has been the largest spill . The Deepwater Horizon