USFWS · New Jersey

Great Swamp National Wildlife Refuge Wilderness

Roughly 25,000 years ago, where the Wisconsin Glacier reached its furthest point south and stopped, the creation of Great Swamp began. With cattail marshes, wet meadows, swamp woodlands, and ridges thick with oak, beech, and laurel, Great Swamp provides a home for 39 species of mammals including mice, moles, skunks, raccoons, otters, foxes, white-tailed deer, and the endangered Indiana bat. Migratory birds see Great Swamp as a "nest and rest" (244 species have been identified). Numerous reptiles and amphibians have taken up residence, including rare bog turtles, wood turtles, and blue-spotted salamanders.

Description from Wilderness Connect (wilderness.net).

Official page at Wilderness Connect ↗
Great Swamp National Wildlife Refuge Wilderness
Photo from Wilderness Connect, wilderness.net
DesignationWilderness
Managed byU.S. Fish and Wildlife Service
StateNew Jersey
Size3,660 acres
Designated1968, by Congress
Center point40.72° N, 74.46° W
Night skyNoticeable light pollution (Black Marble reading 130)

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 Refuge Wilderness30°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, 6 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.

Where to camp

Campsite Atlas →

No federal campground is within ten miles of the boundary in the Campsite Atlas index. Camping inside a wilderness is usually allowed away from trails and water, with no facilities; the managing agency page has the permit and group-size rules.

Explore

Guidebooks for New Jersey

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

  • AMC's Best Day Hikes in New Jersey
    Priscilla Estes, 2024
    Find at Bookshop.org
  • Appalachian Trail Guide to New York-New Jersey
    Daniel D. Chazin, 2019
    Find at Bookshop.org
  • 50 Hikes in the Upper Hudson Valley
    Derek Dellinger, 2018
    Find at Bookshop.org
  • Best Easy Day Hikes Camden
    Greg Westrich, 2015
    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 Wilderness?

3,660 acres.

Source: Wilderness Connect

Who manages Great Swamp National Wildlife Refuge Wilderness?

The U.S. Fish and Wildlife Service.

Source: Wilderness Connect

What state is Great Swamp National Wildlife Refuge Wilderness in?

New Jersey.

Source: Wilderness Connect

When was Great Swamp National Wildlife Refuge Wilderness designated?

Congress designated it in 1968.

Source: Wilderness Connect

How do I get to Great Swamp National Wildlife Refuge Wilderness?

A point inside the boundary is at 40.719° N, 74.458° W. Morristown National Historical Park is 3 miles away. The official page carries directions and the office address.

Source: Wilderness Connect

Which national parks are near Great Swamp National Wildlife Refuge Wilderness?

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 Wilderness?

The National Register has 357 listings within 15 miles, including Speedwell Village--The Factory and Smith, Nathaniel, House.

Source: Register Atlas

Sources

  • Boundary, name, acreage, designation year, states and description: Wilderness Connect.
  • Campgrounds: the Campsite Atlas index of federal campgrounds, matched to this boundary at build time.
  • Trailheads and sites: the Forest Service Recreation Opportunities layer, points inside the boundary.
  • 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.