Exxon Valdez Oil Spill
The Exxon Valdez ran aground in Prince William Sound, Alaska, spilling 11 million gallons of oil
March 24, 1989
Oil in Pristine Waters
On March 24, 1989, the oil tanker Exxon Valdez ran aground on Bligh Reef in Prince William Sound, Alaska, spilling approximately 11 million gallons of crude oil into one of the most ecologically rich and pristine marine environments in North America. The ship had veered off course to avoid ice, and the captain, who was later found to have alcohol in his blood, was not on the bridge at the time of the grounding. The oil spread rapidly across the sound, eventually coating more than 1,300 miles of Alaskan coastline with thick black crude. The disaster shocked the nation and the world.
Wildlife Devastated
The environmental toll was immense. Approximately 250,000 seabirds, 2,800 sea otters, 300 harbor seals, 250 bald eagles, and up to 22 killer whales were killed by the oil. Salmon and herring populations were severely affected, devastating local fishing communities that depended on the sound's ecosystem for their livelihoods. Cleanup workers scrubbed rocks by hand and used high-pressure hot water to clean oiled beaches, but the effort was enormous and ultimately only partially successful. Scientists found oil buried under beaches in the area decades later, demonstrating how long petroleum contamination can persist in cold-water environments.
Policy Changes That Followed
The Exxon Valdez disaster directly led to the passage of the Oil Pollution Act of 1990, which required that all oil tankers operating in U.S. waters be built with double hulls to reduce the risk of spills in future groundings. The law also dramatically increased the liability of oil companies for cleanup costs and damages. Exxon eventually paid over $3.4 billion in cleanup costs and settlements, though a legal battle over punitive damages dragged on for nearly 20 years. The spill changed how Americans thought about the environmental risks of the oil industry and helped strengthen the environmental movement in the early 1990s. Compare its impact to the Deepwater Horizon disaster two decades later.