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
Harte Research Institute for Gulf of Mexico Studies spill that released more than 4.9 million barrels of oil into the Gulf of Mexico between April 20, and July 15, 2010, created a unique opportunity to address many of the long-term issues fundamental to the Gulf’s future sustainability. HRI scientists have and continue to provide leadership in assessing the long-term impacts of the largest accidental marine oil spill in the history of the petroleum industry and are fostering the Gulf’s recovery by helping guide restoration to assure that conservation efforts are effective and long lasting. HRI has already influenced the allocation of billions of dollars toward Gulf restoration and