Dataset Guide

Dataset: Defacto Marine Protected Areas of the United States
Provided by Department of Commerce
Updated 10 Mar 2021

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Dataset summary

The dataset on this page is a cache of the dataset It is a snapshot of the dataset as it appeared on 09 Jun 2021 21:05 GMT. The current dataset could have changed in the meantime. Attribution: Contains data retrieved from

These data provide the spatial boundaries of DeFacto Marine Protected Areas in U.S. Waters. With nearly 1200 sites (for which GIS data are available), DFMPAs cover 3% of the U.S. waters, (0-200 nautical miles offshore), which includes the Exclusive Economic Zone (EEZ), Territorial Sea, and state waters. DFMPAs range in size from less than one acre to more than 40,000 km2, though the vast majority is at the smaller end of this spectrum. Most of the small sites were created to provide places for vessels to anchor safely. Most of the large sites provide dedicated training and operation areas for various branches of the U.S. military, or facilitate the transfer of oil and gas to moored tanker vessels.

Dataset:Defacto Marine Protected Areas of the United States
Provider:Department of Commerce
Licence:License information is derived automatically. Refer to source for license information before using this data.
License not specified
Country:United States of America

Dataset resources

"Defacto Marine Protected Areas of the United States" contains the following resources:


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