USFWS · Idaho

Minidoka National Wildlife Refuge

Minidoka National Wildlife Refuge is located on the Snake River Plain in south-central Idaho, 12 miles (19 km) northeast of Rupert. It includes about 80 miles (130 km) of shoreline around Lake Walcott, from Minidoka Dam upstream about 25 miles (40 km).

From Wikipedia, licensed CC BY-SA 4.0.

National Wildlife Refuge24,522 acresUSFWSID
Official page at U.S. Fish and Wildlife Service ↗
Minidoka National Wildlife Refuge
Photo by Margaux1900, in the public domain, from Wikimedia Commons.
1 fire
active
Stinson Creek Rx 2026 (prescribed burn) · 35 mi from the center · 450 acres
Interagency incident data as of 2026-11-01
Incident details ↓

Facts

Where each comes from ↓
DesignationNational Wildlife Refuge
Managed byU.S. Fish and Wildlife Service
StateIdaho
Size24,522 acres
FWS regionRegion 1
Center point42.66° N, 113.35° W
Night skyAbout as dark as the ground gets (Black Marble reading 19)

Boundary map

2 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 Minidoka National Wildlife Refuge20°30°40°50°60°70°80°January: 1.15 inches of precipitation, 6.7 inches of snowFebruary: 0.76 inches of precipitation, 4.2 inches of snowMarch: 0.85 inches of precipitation, 1.2 inches of snowApril: 0.99 inches of precipitation, 0.5 inches of snowMay: 1.34 inches of precipitation, 0.0 inches of snowJune: 0.72 inches of precipitation, 0.0 inches of snowJuly: 0.16 inches of precipitation, 0.0 inches of snowAugust: 0.33 inches of precipitation, 0.0 inches of snowSeptember: 0.68 inches of precipitation, 0.0 inches of snowOctober: 0.78 inches of precipitation, 0.7 inches of snowNovember: 0.86 inches of precipitation, 2.6 inches of snowDecember: 1.18 inches of precipitation, 4.6 inches of snowJanFebMarAprMayJunJulAugSepOctNovDecJanuary: 27.6°F averageFebruary: 31.8°F averageMarch: 40.3°F averageApril: 46.5°F averageMay: 55.6°F averageJune: 63.5°F averageJuly: 71.7°F averageAugust: 70.3°F averageSeptember: 61.2°F averageOctober: 49.4°F averageNovember: 37.5°F averageDecember: 28.1°F average0 in2 in4 in6 in8 inTemp °FInches
The line is the average temperature and the bars are average precipitation at Minidoka Dam, 8 miles from the center point at 4,164 feet, station USC00105980 in the NOAA monthly climate normals for 1991 to 2020. Precipitation totals about 10 inches a year. The dotted line is average snowfall, about 21 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 2026-11-01
  • Prescribed
    Stinson Creek Rx 2026

    35 mi from the center point · 450 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 · 12 in all · Register Atlas

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

Guidebooks for Idaho

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

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

Reference

Questions people ask

How big is Minidoka National Wildlife Refuge?

24,522 acres.

Source: How acreage is computed

Who manages Minidoka National Wildlife Refuge?

The U.S. Fish and Wildlife Service.

Source: U.S. Fish and Wildlife Service

What state is Minidoka National Wildlife Refuge in?

Idaho.

Source: How states are assigned

How do I get to Minidoka National Wildlife Refuge?

A point inside the boundary is at 42.656° N, 113.349° W. The official page carries directions and the office address.

Source: U.S. Fish and Wildlife Service

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

1 active incident within 50 miles as of 2026-11-01, the nearest Stinson Creek Rx 2026 at 35 miles. Distance is to the reported incident point, not the fire edge.

Source: Fire nearby

Are there historic places near Minidoka National Wildlife Refuge?

The National Register has 12 listings within 15 miles, including Register Rock and Rupert Town Square Historic District (Boundary Increase).

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 (Q1437470), the item linked to its Wikipedia article. Author and license come from the file page on Wikimedia Commons.
  • Description: Minidoka 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.