Volume and extent of the Deepwater Horizon oil spill Volume and extent of the Deepwater Horizon oil spill The "Deepwater Horizon" oil spill was discovered on the afternoon of 22 April 2010 when a large oil slick began to spread at the former rig site. According to the Flow Rate Technical Group, the leak amounted to about of oil, exceeding the 1989 "Exxon Valdez" oil spill as the largest ever to originate in U.S.-controlled waters and the 1979 Ixtoc I oil spill as the largest spill in the Gulf of Mexico. BP has challenged this calculation saying that it is overestimated as it includes over of oil which was
Refugio oil spill rest of the Refugio coastline south of the spill. The spill was much smaller than the nearby 1969 Santa Barbara oil spill on January 28, 1969 in which an oil rig blow-out spilled an estimated of crude oil over a ten-day period. The thick crude oil damaged the coats, skin, beaks, and appendages of hundreds of animals. Workers eventually collected 202 dead birds and 99 dead mammals which included at least 46 sea lions and 12 dolphins. The full impact will never be known since animals may travel a distance before succumbing to their injuries. Sixty-five live birds and sixty-three