|Location:||Sand Point, Popof, Ak|
* IGRF values as of 2015.
The U.S. Geological Survey (USGS) Shumagin Magnetic Observatory is located near Sand Point, Alaska on the northwest coast of Popof Island, 575 air miles southwest of Anchorage, Alaska. The observatory was established in 2003 to provide increased geomagnetic data coverage in southern Alaska and the Aleutian Islands. The observatory is located on land owned by The Shumagin Corporation, and is operated in a cooperative partnership that assures the long-term operation of the observatory.