The Guam observatory was established in 1957. The observatory is situated on property owned by the U.S. Air Force according to terms of an agreement with the USGS and the Geomagnetism Program. The facility is shared with the Pacific Island Ecosystems Research Center (PIERCE) Brown Treesnake Project.
The Guam observatory is part of the 210 Magnetic Meridian Array.
![Department of Interior U.S.G.S Guam Magnetic Observatory sign](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/side_image/public/thumbnails/image/Guam_sign_web.jpg?itok=4hObJodA)
Station Id: GUA
Location: Dededo, Guam
Latitude: 13.5895°N
Longitude: 144.8694°E
Geomagnetic Latitude: 5.76°N*
Geomagnetic Longitude: 216.50°E*
Elevation: 140 meters
Orientation: HDZF
* IGRF values as of 2015.
Photos:
![Guam magnetic observatory, image of the area](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/side_image/public/thumbnails/image/Guam02_third_size.jpg?itok=aTVgy5Ma)
![Variations building at Guam.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/side_image/public/thumbnails/image/Guam_variations_third_size.jpg?itok=PnuqyISw)
The Guam observatory was established in 1957. The observatory is situated on property owned by the U.S. Air Force according to terms of an agreement with the USGS and the Geomagnetism Program. The facility is shared with the Pacific Island Ecosystems Research Center (PIERCE) Brown Treesnake Project.
The Guam observatory is part of the 210 Magnetic Meridian Array.
![Department of Interior U.S.G.S Guam Magnetic Observatory sign](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/side_image/public/thumbnails/image/Guam_sign_web.jpg?itok=4hObJodA)
Station Id: GUA
Location: Dededo, Guam
Latitude: 13.5895°N
Longitude: 144.8694°E
Geomagnetic Latitude: 5.76°N*
Geomagnetic Longitude: 216.50°E*
Elevation: 140 meters
Orientation: HDZF
* IGRF values as of 2015.
Photos:
![Guam magnetic observatory, image of the area](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/side_image/public/thumbnails/image/Guam02_third_size.jpg?itok=aTVgy5Ma)
![Variations building at Guam.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/side_image/public/thumbnails/image/Guam_variations_third_size.jpg?itok=PnuqyISw)