USFWS · Colorado

Alamosa National Wildlife Refuge

The Alamosa National Wildlife Refuge is an 11,169-acre (4,520 ha) United States National Wildlife Refuge located in southern Colorado. The site is located in the San Luis Valley along the east side of the Rio Grande approximately 8 miles (13 km) southeast of Alamosa primarily in southeastern Alamosa County, although very small parts extend into northeastern Conejos and western Costilla counties. It is managed by the United States Fish and Wildlife Service jointly with the Baca and Monte Vista National Wildlife Refuges. It was established in 1962 as a haven for migratory birds and other wildlife.

From Wikipedia, licensed CC BY-SA 4.0.

Official page at U.S. Fish and Wildlife Service ↗
DesignationNational Wildlife Refuge
Managed byU.S. Fish and Wildlife Service
StateColorado
Size12,065 acres (computed from the boundary polygon)
FWS regionRegion 6
Center point37.4211, -105.7757
Night skyVery dark ground, a faint glow at most (Black Marble reading 25)

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 Alamosa National Wildlife Refuge10°20°30°40°50°60°70°January: 0.32 inches of precipitation, 4.5 inches of snowFebruary: 0.28 inches of precipitation, 4.1 inches of snowMarch: 0.54 inches of precipitation, 4.3 inches of snowApril: 0.57 inches of precipitation, 3.5 inches of snowMay: 0.60 inches of precipitation, 0.8 inches of snowJune: 0.43 inches of precipitation, 0.0 inches of snowJuly: 1.04 inches of precipitation, 0.0 inches of snowAugust: 1.29 inches of precipitation, 0.0 inches of snowSeptember: 0.98 inches of precipitation, 0.5 inches of snowOctober: 0.65 inches of precipitation, 2.2 inches of snowNovember: 0.37 inches of precipitation, 3.4 inches of snowDecember: 0.34 inches of precipitation, 4.6 inches of snowJanFebMarAprMayJunJulAugSepOctNovDecJanuary: 16.8°F averageFebruary: 24.3°F averageMarch: 35.2°F averageApril: 42.6°F averageMay: 51.7°F averageJune: 60.6°F averageJuly: 65.3°F averageAugust: 63.2°F averageSeptember: 55.9°F averageOctober: 43.8°F averageNovember: 30.3°F averageDecember: 18.1°F average0 in1 in2 in3 in4 in5 inTemp °FInches
The line is the average temperature and the bars are average precipitation at Alamosa San Luis AP, 5 miles from the center point at 7,533 feet, station USW00023061 in the NOAA monthly climate normals for 1991 to 2020. Precipitation totals about 7 inches a year. The dotted line is average snowfall, about 28 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.

Fire nearby

Within 50 miles · as of 2026-09-18
  • Prescribed
    Blanca Wetlands Rx

    10 mi from the center point · 208 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.

Explore

Nearby on the other atlases

National Register listings within 15 miles · 13 in all · Register Atlas

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

Reference

Questions people ask

How big is Alamosa National Wildlife Refuge?

12,065 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 Alamosa National Wildlife Refuge?

The U.S. Fish and Wildlife Service.

Source: U.S. Fish and Wildlife Service

What state is Alamosa National Wildlife Refuge in?

Colorado.

Source: How states are assigned

How do I get to Alamosa National Wildlife Refuge?

A point inside the boundary is at 37.421, -105.776. Great Sand Dunes National Park & Preserve is 25 miles away. The official page carries directions and the office address.

Source: U.S. Fish and Wildlife Service

Is there a fire near Alamosa National Wildlife Refuge right now?

1 active incident within 50 miles as of 2026-09-18, the nearest Blanca Wetlands Rx at 10 miles. Distance is to the reported incident point, not the fire edge.

Source: Fire nearby

How dark is the night sky at Alamosa National Wildlife Refuge?

NASA’s Black Marble night-lights image reads 25 on a 0 to 255 scale at the center point, very dark ground, a faint glow at most.

Source: NASA Black Marble

Which national parks are near Alamosa National Wildlife Refuge?

Great Sand Dunes National Park & Preserve (25 mi). Park Atlas has fees, hours and alerts for each.

Source: Nearby on the other atlases

Are there historic places near Alamosa National Wildlife Refuge?

13 National Register listings within 15 miles, including Pike's Stockade and Denver and Rio Grande Railroad Locomotive No.169.

Source: Register Atlas

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: Alamosa 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.