GMU · Idaho Department of Fish and Game
Unit 31
Idaho, United States
The map opens on this unit. Turn on Hunting units in Layers to see its boundary with public land, your pins and the forecast.
About Unit 31
Unit 31 is a GMU in Idaho, United States, set by Idaho Department of Fish and Game. It covers about 1,549 km² (598 mi²). The town of Weiser is inside it.
HuntGrid draws its boundary from Idaho Department of Fish and Game's data for the 2026 season. The agency's regulations say which species and seasons use it.
- Unit code
- 31
- Area
- 1,549 km²
- Area (miles)
- 598 mi²
- Boundaries
- 2026
Public and protected land mapped inside it
HuntGrid's public land layers map about 766 km² of public or protected land inside it, 49% of the unit. Some protected land is privately owned (a conservation group's, for one). By manager, as the source names it:
| Manager | km² | Share |
|---|---|---|
| Bureau of Land Management | 358 | 23% |
| Forest Service Region 04 Intermountain | 290 | 19% |
| Idaho Department of Lands | 92 | 6% |
| Idaho Department of Fish and Game | 37 | 2% |
| The Nature Conservancy | 1.5 | under 1% |
| Deer Flat National Wildlife Refuge | 0.2 | under 1% |
| DEER FLAT NATIONAL WILDLIFE REFUGE | 0.2 | under 1% |
Boundaries are approximate and aren't legal descriptions. Public land doesn't always mean you can hunt there: check your local regulations and posted signs.
Public land: U.S. Geological Survey (USGS) Gap Analysis Project (GAP), 2025, Protected Areas Database of the United States (PAD-US) 4.1
Seasons and regulations
Seasons for this unit that a person has checked against Idaho Department of Fish and Game's regulations:
| Species | Dates | Details |
|---|---|---|
| Cougar (mountain lion) | Jul 1, 2026 to Jun 30, 2027 | source |
| Grey wolf | Jul 1, 2026 to Nov 14, 2026 | source |
| American black bear | Aug 30, 2026 to Oct 31, 2026 | on or within 1 mile of private land only source |
| White-tailed deer | Oct 10, 2026 to Oct 31, 2026 | source |
| Grey wolf | Nov 15, 2026 to Mar 31, 2027 | source |
| American black bear | Apr 1, 2027 to May 22, 2027 | on or within 1 mile of private land only source |
| Grey wolf | Apr 1, 2027 to Jun 30, 2027 | source |
| Wild turkey | Apr 8, 2027 to Apr 14, 2027 | bearded, Unit 2 except Farragut State Park and WMA; Unit 32 except the Payette County part source |
| Wild turkey | Apr 15, 2027 to May 25, 2027 | bearded, Unit 2 except Farragut State Park and WMA; Unit 32 except the Payette County part source |
The official regulations have the final word: check them before you hunt.
Units around it
Next to it in the same unit system
Other hunting units that cover part of it
- Duck Area 1
- Canada Geese Area 1 (Canada goose area)
- White-fronted Geese Area 3 (white-fronted goose area)
- Light Geese Area 3 (light goose area)
- Bear controlled hunt area 22-1
- Brownlee Elk Zone
- Deer controlled hunt area 31
- Elk controlled hunt area 31
- Elk controlled hunt area 31-1X
- Elk controlled hunt area 31-2X
- Elk controlled hunt area 31-3X
- Pronghorn controlled hunt area 31-1
- Turkey controlled hunt area 22-1
- Turkey controlled hunt area 22-2
- Turkey controlled hunt area 22-3
What HuntGrid shows for Unit 31
- Its boundary on the map; tap inside it for the unit's card with the agency's regulations link.
- Public land and the other hunting units in the same view, each with its source.
- Season dates once a person has checked them, and legal shooting hours where the rule is checked.
- Hourly wind with a scent cone for every stand, and official weather alerts.
- Offline maps: download the area and use the map, your pins and the forecast with no signal.
Questions
How big is Unit 31 (GMU)?
About 1,549 km² (598 mi²), as HuntGrid maps Idaho Department of Fish and Game's boundary.
How much public or protected land is in Unit 31?
HuntGrid's public land layers map about 766 km² of public or protected land, 49% of the unit; the largest share is managed by Bureau of Land Management. Public land doesn't always mean you can hunt there.
Where are the season dates for Unit 31?
This page lists 9 seasons a person has checked against Idaho Department of Fish and Game's regulations; the official regulations have the final word.
Which units are next to Unit 31?
In the same unit system: Unit 22 and Unit 32.
More on huntgrid.net
Sources
Unit boundary: Idaho Department of Fish and Game. Licence: Idaho Department of Fish and Game (published with a no-warranty disclaimer). Boundaries for the 2026 season.
HuntGrid isn't affiliated with Idaho Department of Fish and Game. The official regulations and maps have the final word.