Loading intel...
Idaho
Unit 31.
Planning guide for Game Management Unit 31, with sourced terrain, public-land percentages, published schedules, and links to the connected Pro map.
Boundary Map Locked
Pro includes the interactive GMU map, BLM surface-management context, terrain tools, and current wildfire overlays for Unit 31.
See Pro pricingTerrainForest/Mountains
OwnershipLand breakdown unavailable
Access DifficultySee IDFG
Key SpeciesPronghorn
Season TypeControlled Only
ZoneBrownlee
Unit 31 Overview
Idaho Game Management Unit 31 (GMU 31) is a premier hunting destination located in the Brownlee Elk Zone. Home to Pronghorn, this unit features high-elevation rugged terrain, requiring physical preparation and optics for cross-canyon spotting. Public-land breakdown for Unit 31 is not yet integrated into our database — verify acreage with Idaho Fish and Game's Hunt Planner before scouting.
2026 Regular Schedule
Official Regulation Feed
Species
Weapon
Tag
Dates
Pronghorn
Any Weapon • Controlled
Any Weapon
Controlled
Sep 25 - Oct 24
Pronghorn
Any Weapon • Controlled
Any Weapon
Controlled
Sep 25 - Oct 24
Prepare for the Hunt
Success in Unit 31 requires understanding the forest/mountains terrain and public land boundaries. Use Roam Idaho for connected trip planning, then carry an official offline map before leaving service.
- GMU Boundary Overlay
- BLM Surface-management Context
- Current Wildfire Overlay
- Slope, Road, and Wind Tools
Common Questions
Where is Unit 31?
Located in the Brownlee Zone with forest/mountains terrain.
Is it public land?
Unit 31 is approximately 49.4% public. See full breakdown below.
Land Ownership
Private49.59%
BLM23.12%
USFS18.72%
State7.51%
Other0.01%
Source: IDFG Hunt Planner · Inside Idaho
Unit 31 Boundary
That portion of WASHINGTON COUNTY within the following boundary: beginning at Brownlee Dam on the Snake River, then southeast on State Highway 71 to U.S. 95, then southwest on U.S. 95 to the Snake River at Weiser, then down the Snake River to the point of beginning.
Brownlee Zone Context
West-Central Idaho — Snake River Reservoirs
Brownlee covers the country around Brownlee, Oxbow, and Hells Canyon reservoirs. It's lower-elevation, drier, and earlier-season than most Idaho elk zones, making it a logical choice for archery hunters.
Heat is the under-rated challenge in early seasons. Cambridge and Council are the realistic supply points.
See all units in the Brownlee ZonePlanning
Primary Region
Southwest Highlands
Nearest Supplies
Hunters typically basecamp or resupply in Boise, Mountain Home, Garden Valley.
Climate Outlook
Varied transition zone. Sagebrush foothills to pine-covered mountains.
Authorities
Always verify regulations with official government entities before heading into the backcountry.
Explore Brownlee Zone Units
Season dates and tag rules sourced from Idaho Fish and Game proclamations. Original IDFG entry for Unit 31: view source.