USFWS · Guam

Guam National Wildlife Refuge

The Guam National Wildlife Refuge is composed of three units: the Andersen Air Force Base Overlay Unit, the Navy Overlay Unit, and the Ritidian Unit. The Ritidian Unit is on the northernmost tip of Guam and encompasses approximately 1,217 acres, including 385 terrestrial acres and 832 acres of submerged areas offshore.

From Wikipedia, licensed CC BY-SA 4.0.

National Wildlife Refuge23,758 acresUSFWSGU
Official page at U.S. Fish and Wildlife Service ↗
Guam National Wildlife Refuge
Photo by Laura Beuregard, U.S. Fish & Wildlife Service - Pacific Region's, licensed CC BY 2.0, from Wikimedia Commons.

Facts

Where each comes from ↓
DesignationNational Wildlife Refuge
Managed byU.S. Fish and Wildlife Service
TerritoryGuam
Size23,758 acres
FWS regionRegion 1
Center point13.61° N, 144.87° E
Night skySome glow on the horizon (Black Marble reading 63)

Boundary map

8 outlines

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.

Weather by month

NOAA climate normals →
Weather by month near Guam National Wildlife Refuge70°80°90°January: 5.34 inches of precipitationFebruary: 4.17 inches of precipitationMarch: 2.37 inches of precipitationApril: 3.54 inches of precipitationMay: 4.11 inches of precipitationJune: 6.87 inches of precipitationJuly: 10.77 inches of precipitationAugust: 15.09 inches of precipitationSeptember: 12.77 inches of precipitationOctober: 11.31 inches of precipitationNovember: 7.95 inches of precipitationDecember: 5.46 inches of precipitationJanFebMarAprMayJunJulAugSepOctNovDecJanuary: 79.6°F averageFebruary: 79.6°F averageMarch: 80.2°F averageApril: 81.2°F averageMay: 82.1°F averageJune: 82.4°F averageJuly: 81.5°F averageAugust: 81.4°F averageSeptember: 81.3°F averageOctober: 81.5°F averageNovember: 81.4°F averageDecember: 80.6°F average0 in5 in10 in15 in20 inTemp °FInches
The line is the average temperature and the bars are average precipitation at Andersen AFB Guam, 4 miles from the center point at 624 feet, station GQC00914025 in the NOAA monthly climate normals for 1991 to 2020. Precipitation totals about 90 inches a year.

Large units span more than one climate. The station stands in for the center point, and the outer parts of the boundary can be warmer or colder.

Explore

Nearby on the other atlases

National Park System units within 30 miles · Park Atlas
National Historical Park · Adjacent
War In The Pacific National Historical Park
National Register listings within 15 miles · 67 in all · Register Atlas

Landmarks are listed first, then by distance from the boundary.

Guidebooks for hiking across the country

We earn a small commission if you buy through these links. It does not change what we list.

  • Walks of a Lifetime in America
    Manning, 2020
    Find at Bookshop.org
  • Backpacker's the national parks coast to coast
    Ted Alvarez, 2016
    Find at Bookshop.org

Titles come from Open Library's catalog, matched by subject heading or by title.

Reference

Questions people ask

How big is Guam National Wildlife Refuge?

23,758 acres.

Source: How acreage is computed

Who manages Guam National Wildlife Refuge?

The U.S. Fish and Wildlife Service.

Source: U.S. Fish and Wildlife Service

Where is Guam National Wildlife Refuge?

Guam.

Source: How states are assigned

How do I get to Guam National Wildlife Refuge?

A point inside the boundary is at 13.610° N, 144.872° E. War In The Pacific National Historical Park is adjacent. The official page carries directions and the office address.

Source: U.S. Fish and Wildlife Service

Which national parks are near Guam National Wildlife Refuge?

War In The Pacific National Historical Park (adjacent). Park Atlas has fees, hours and alerts for each.

Source: Nearby on the other atlases

Are there historic places near Guam National Wildlife Refuge?

The National Register has 67 listings within 15 miles, including Atantano Shrine and Cruz Water Catchment.

Source: Register Atlas

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.
  • Photograph: the image Wikidata records for this refuge (Q25185619), the item linked to its Wikipedia article. Author and license come from the file page on Wikimedia Commons.
  • Description: Guam National Wildlife Refuge on Wikipedia, CC BY-SA 4.0. The article was accepted because its title contains this unit’s name.
  • Campgrounds: the Campsite Atlas index of federal campgrounds, matched to this boundary at build time.
  • Night sky: NASA Black Marble (VIIRS, 2016 composite) sampled at zoom 6 around the center point.
  • Weather, alerts, air quality, river flow and earthquakes load live in your browser from NWS, AirNow, USGS and iNaturalist when you open the page.