More than 50,000 gallons of oil spilled into Montana's Yellowstone River after a pipeline burst.
A significant chunk of the missing oil from 2010's Deepwater Horizon oil spill has been discovered sitting on the seafloor at the bottom of the Gulf of Mexico.
Four years after a BP oil rig exploded and flooded the Gulf of Mexico with an estimated 170 million gallons of oil, scientists have discovered further evidence of coral communities affected by this environmental disaster.
A 20-inch pipe bursts, putting street knee-deep in oil.
A vessel carrying 16,000 gallons of oil has hit a reef off the coast of San Cristobal.
Debate continues over what qualifies as an oil spill disaster, but here are 10 that would certainly make the list.