USFWS · New Jersey

Great Swamp National Wildlife Refuge

The Great Swamp National Wildlife Refuge is located in Morris County, New Jersey, United States. Established in 1960, it is among what has grown to be 806 refuges in the United States National Wilderness Preservation System.

From Wikipedia, licensed CC BY-SA 4.0.

Official page at U.S. Fish and Wildlife Service ↗
Great Swamp National Wildlife Refuge
Photo by Jesper Rautell Balle, licensed CC BY 3.0, from Wikimedia Commons.
DesignationNational Wildlife Refuge
Managed byU.S. Fish and Wildlife Service
StateNew Jersey
Size7,858 acres
FWS regionRegion 5
Center point40.71° N, 74.48° W
Night skyNoticeable light pollution (Black Marble reading 112)

Boundary map

1 outline

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 Great Swamp National Wildlife Refuge30°40°50°60°70°80°January: 3.53 inches of precipitation, 5.8 inches of snowFebruary: 2.96 inches of precipitation, 8.4 inches of snowMarch: 4.19 inches of precipitation, 4.6 inches of snowApril: 4.03 inches of precipitation, 0.4 inches of snowMay: 4.05 inches of precipitation, 0.0 inches of snowJune: 4.77 inches of precipitation, 0.0 inches of snowJuly: 4.68 inches of precipitation, 0.0 inches of snowAugust: 4.94 inches of precipitation, 0.0 inches of snowSeptember: 4.64 inches of precipitation, 0.0 inches of snowOctober: 4.58 inches of precipitation, 0.0 inches of snowNovember: 3.60 inches of precipitation, 0.7 inches of snowDecember: 4.43 inches of precipitation, 4.1 inches of snowJanFebMarAprMayJunJulAugSepOctNovDecJanuary: 30.7°F averageFebruary: 32.4°F averageMarch: 40.2°F averageApril: 51.5°F averageMay: 61.4°F averageJune: 70.7°F averageJuly: 76.0°F averageAugust: 74.2°F averageSeptember: 67.1°F averageOctober: 54.9°F averageNovember: 44.5°F averageDecember: 35.9°F average0 in2 in4 in6 in8 in10 inTemp °FInches
The line is the average temperature and the bars are average precipitation at Canoe Brook, 7 miles from the center point at 180 feet, station USC00281335 in the NOAA monthly climate normals for 1991 to 2020. Precipitation totals about 50 inches a year. The dotted line is average snowfall, about 24 inches a year on the same inches scale.

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

Guidebooks for New Jersey

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

  • Birding the Hudson Valley
    Kathryn J. Schneider, 2018
    Find at Bookshop.org
  • AMC's Best Day Hikes in New Jersey
    Priscilla Estes, 2024
    Find at Bookshop.org
  • Rail-Trails New Jersey and New York
    Rails-to-Trails Conservancy, 2019
    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 Great Swamp National Wildlife Refuge?

7,858 acres.

Source: How acreage is computed

Who manages Great Swamp National Wildlife Refuge?

The U.S. Fish and Wildlife Service.

Source: U.S. Fish and Wildlife Service

What state is Great Swamp National Wildlife Refuge in?

New Jersey.

Source: How states are assigned

How do I get to Great Swamp National Wildlife Refuge?

A point inside the boundary is at 40.712° N, 74.477° W. Morristown National Historical Park is 3 miles away. The official page carries directions and the office address.

Source: U.S. Fish and Wildlife Service

Which national parks are near Great Swamp National Wildlife Refuge?

Morristown National Historical Park (3 mi), Thomas Edison National Historical Park (10 mi) and Paterson Great Falls National Historical Park (18 mi). Park Atlas has fees, hours and alerts for each.

Source: Nearby on the other atlases

Are there historic places near Great Swamp National Wildlife Refuge?

The National Register has 373 listings within 15 miles, including Speedwell Village--The Factory and Millington Schoolhouse.

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 (Q1544372), the item linked to its Wikipedia article. Author and license come from the file page on Wikimedia Commons.
  • Description: Great Swamp 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.