|Medium and major oil spills||Volume||Percent||Number of releases||Percent|
NOTE: Average annual volume figures include all spills of oil into the navigable waters of the United States. from the Coast Guard's Marine Safety Information System. Medium and major spill figures include all oil spills of more than 10,000 gallons into U.S. navigable waters during a single incident.
SOURCE: U.S. Department of Transportation, U.S. Coast Guard, Marine Safety Information Management System database as of December 2001.