oilbbl. In 2010 Baird reported that between 9 million and 13 million barrels have been spilled in the Niger Delta since 1958. One source even calculates that the total amount of petroleum in barrels spilled between 1960 and 1997 is upwards of 100 Moilbbl. A United Nations report for 2011 documented that the environment of the Niger Delta was so polluted that it could take 25 to 30 years to reverse the associated sustainability consequences of the pollution.

A catastrophic spill occurred on May 1, 2010