The blow out and fire occurred on April 20, 2010. See link for a discussion of events.
There was a later oil spill caused by a tugboat hitting an abandoned oil pipe in Barataria Bay.
The explosion of a ship connected to the well, Deepwater Horizon, caused the pipe to leak.
Many Louisiana oil spills have been caused by Hurricane Ivan (2004) and Hurricane Katrina (2005).
See related question for the BP Gulf of Mexico spill of 2010.
There was an oil spill in Louisiana?!?!? Oh yeah..... there is still oil floating around near Florida and the Gulf of Mexico
The Guimaras oil spill occurred on 11th August 2006.
Greenpoint oil spill happened in 1978.
Montara oil spill happened in 2009.
Prestige oil spill happened in 2002.
Enbridge oil spill happened in 2010.
Rena oil spill happened in 2011.
Mingbulak oil spill happened in 1992.
Louisiana's fishing industry
All of them
No it was an accident that happened. obama had nothing to do with the oil spill.
The company was not involved in the spill.