Koyukuk National Wildlife Refuge
The Koyukuk National Wildlife Refuge is a 3,500,000-acre (14,000 km2) conservation area in Alaska. It lies within the floodplain of the Koyukuk River, in a basin that extends from the Yukon River to the Purcell Mountains and the foothills of the Brooks Range. This region of wetlands is home to fish, waterfowl, beaver and Alaskan moose, and wooded lowlands where two species of fox, bears, wolf packs, Canadian lynx and marten prowl.
From Wikipedia, licensed CC BY-SA 4.0.
| Designation | National Wildlife Refuge |
| Managed by | U.S. Fish and Wildlife Service |
| State | Alaska |
| Size | 4.0 million acres (computed from the boundary polygon) |
| FWS region | Region 7 |
| Center point | 65.5657, -155.1272 |
| Night sky | Very dark ground, a faint glow at most (Black Marble reading 34) |
Boundary map
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.
Fire nearby
- WildfireDulbatna
17 mi from the center point · 147 acres
Distance is to the reported incident point, not the fire edge, and is measured from the center of a boundary that may be many miles across. Check the agency page for closures.
Reference
Questions people ask
How big is Koyukuk National Wildlife Refuge?
4.0 million acres, measured from the published boundary polygon. The agency’s own figure can differ where the boundary includes water or inholdings.
Source: How acreage is computed
Who manages Koyukuk National Wildlife Refuge?
The U.S. Fish and Wildlife Service.
Source: U.S. Fish and Wildlife Service
What state is Koyukuk National Wildlife Refuge in?
Alaska.
Source: How states are assigned
How do I get to Koyukuk National Wildlife Refuge?
A point inside the boundary is at 65.566, -155.127. The official page carries directions and the office address.
Source: U.S. Fish and Wildlife Service
Is there a fire near Koyukuk National Wildlife Refuge right now?
1 active incident within 50 miles as of 2026-09-17, the nearest Dulbatna at 17 miles. Distance is to the reported incident point, not the fire edge.
Source: Fire nearby
How dark is the night sky at Koyukuk National Wildlife Refuge?
NASA’s Black Marble night-lights image reads 34 on a 0 to 255 scale at the center point, very dark ground, a faint glow at most.
Source: NASA Black Marble
Sources
- Boundary, name: the U.S. Fish and Wildlife Service refuge boundary layer.
- States: computed by intersecting the boundary with Census state polygons; a state is listed when it holds at least one percent of the area.
- Acreage: geodesic area of the published polygon. The agency’s official acreage can differ where the boundary includes water, easements or inholdings.
- Description: Koyukuk 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.