Mariana Trench National Wildlife Refuge
National Wildlife Refuge managed by the U.S. Fish and Wildlife Service in the Northern Mariana Islands. The refuge is the Trench Unit of the Mariana Trench Marine National Monument.
Official page at U.S. Fish and Wildlife Service ↗| Designation | National Wildlife Refuge, marine |
| Managed by | U.S. Fish and Wildlife Service |
| Territory | Northern Mariana Islands |
| Boundary extent | 51 million acres inside the boundary, most of it water |
| FWS region | Region 1 |
| Center point | 17.32° N, 148.06° E |
Boundary map
Boundary, simplified to about 0.005 degrees
The outline is the agency boundary simplified for display, so small parcels and inholdings may not show. The agency page has the authoritative map.
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Reference
Questions people ask
How big is Mariana Trench National Wildlife Refuge?
51 million acres inside the boundary, most of it water.
Source: How acreage is computed
Who manages Mariana Trench National Wildlife Refuge?
The U.S. Fish and Wildlife Service.
Source: U.S. Fish and Wildlife Service
Where is Mariana Trench National Wildlife Refuge?
The Northern Mariana Islands.
Source: How states are assigned
How do I get to Mariana Trench National Wildlife Refuge?
A point inside the boundary is at 17.323° N, 148.058° E. The official page carries directions and the office address.
Source: U.S. Fish and Wildlife Service
Sources
- Boundary, name: the U.S. Fish and Wildlife Service refuge boundary layer.
- States and territories: computed by intersecting the boundary with Census state polygons and coarse outlines of the territories and outlying islands. A place is listed when it holds at least one percent of the area. A boundary that touches no outline is listed under the nearest one.
- Acreage: geodesic area of the published polygon. The agency’s official acreage can differ where the boundary includes water, easements or inholdings. This unit is mostly water, so the figure is the area inside the boundary rather than land.
- Parent unit: the Wikipedia article Mariana Trench Marine National Monument, which this unit’s name redirects to and which names it the Trench Unit. Its summary is about the whole monument, so it is not quoted here.
- Weather, alerts, air quality, river flow and earthquakes load live in your browser from NWS, AirNow, USGS and iNaturalist when you open the page.