A view of response ships at the source of the Deepwater Horizon oil spill in the Gulf of Mexico, a month after the rig exploded and sank, tragically claiming the lives of 11 people. (NOAA)

A view of response ships at the source of the Deepwater Horizon oil spill in the Gulf of Mexico, a month after the rig exploded and sank, tragically claiming the lives of 11 people. (NOAA)

Deepwater Horizon Oil Spill

On April 20, 2010, an explosion on the Deepwater Horizon Macondo oil well drilling platform started the largest marine oil spill in U.S. history, releasing millions of barrels of oil into the Gulf of Mexico. NOAA was on the scene from the earliest moments of the crisis, bringing more than 20 years of experience protecting and restoring our coasts from oil spills.

As the lead science agency for coastal oil spills, NOAA's Office of Response and Restoration provided mission-critical information to guide the emergency response. Today, NOAA continues its commitment to the Gulf as we work to assess the fish, wildlife, and habitat affected by the spill along the coasts of Louisiana, Mississippi, Texas, Alabama, and Florida.

Find the latest updates on the Natural Resource Damage Assessment from the Deepwater Horizon Trustee Council and access NOAA data and information related to the spill. Download the oil trajectory forecast maps produced during this spill.

Published: 04/21/15

Keeping up with emerging technologies and changing energy trends helps us become better prepared for the oil spills of tomorrow.

That means being ready for anything, whether spills stem from a derailed oil train, a pipeline of oil sands, or a cargo ship passing through Arctic waters.

Published: 04/17/15

In the middle of the response to the Deepwater Horizon oil spill, a scientific debate emerged about the role of chemical dispersants in response to the spill.

Five years later, we know a lot more, but many of the scientific, public, and policy questions remain open to debate.

Published: 04/16/15

After the Deepwater Horizon oil spill, the government began planning a lot of scientific studies and collecting a lot of data on the spill's impacts.

Learn about the digital solution NOAA created to gather together and organize what would become an unprecedented amount of scientific data from this spill.

Published: 04/13/15

NOAA science adviser Charlie Henry received an urgent phone call in the middle of the night on April 20, 2010.

He was told of an explosion and fire on the drilling platform Deepwater Horizon in the Gulf of Mexico.

This began months of unusual challenges and stresses that Henry and his NOAA colleagues will never forget.

Published: 04/09/15

During the Deepwater Horizon oil spill, NOAA debuted the online mapping tool ERMA, which organized crucial response data into one common picture for everyone involved in this monumental spill.

Learn how NOAA developed this pivotal piece of technology under the pressure of a real emergency.

Published: 04/02/15

Dolphins washing up dead in the northern Gulf of Mexico are not an uncommon phenomenon.

What has been uncommon, however, is how many more dead bottlenose dolphins have been observed in coastal waters affected by the Deepwater Horizon oil spill in the five years since.

Published: 03/31/15

In the five years since the Deepwater Horizon oil spill, scientists have been studying just how this oil spill and response affected the deep ocean and seafloor of the Gulf.

What they found was the footprint of the oil spill on the seafloor, stamped on sickened deep-sea corals and out-of-balance communities of tiny marine invertebrates.

Published: 03/31/15

As caretakers of the critical resources damaged by the Deepwater Horizon oil spill, the state and federal trustees are engaged in a rigorous, scientific process of injury assessment.

NOAA's efforts have generated tens of thousands of samples, millions of analytical results, and more than a dozen studies published so far.

Find a list of those studies published in peer-reviewed scientific journals.

Published: 03/26/14

NOAA led an international team of researchers in a study which showed heart failure and other severe deformities when developing tuna were exposed to oil.

This study is part of ongoing research to determine how the waters, lands, and life of the Gulf of Mexico were harmed by the Deepwater Horizon oil spill and response in 2010.

Published: 04/24/15

A flexible new data management tool—known as DIVER and developed by NOAA to support the damage assessment for the 2010 Deepwater Horizon oil spill—is now available for public use.

You can use it to find and download environmental impact data from the Gulf of Mexico.