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Brownlee Elk Zone
Idaho GMU 31
Strategic hunting data, boundary maps, and 2026 season dates for Game Management Unit 31.
Updated for 2026 Season
TerrainForest/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.
Application Strategy
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Maps
Tactics
2026 Regular Schedule
Seasons in Unit 31 typically begin in Sep 25.
There are 2 confirmed seasons in Unit 31.
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We're currently digitizing 2023-2025 harvest reports and draw odds for Unit 31. Check back shortly for deep-dive analytics.
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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 ZoneCommon Questions About Unit 31
Where is Idaho GMU 31?
Unit 31 sits in the Brownlee Elk Zone. The landscape is predominantly forest/mountains, requiring appropriate gear and preparation.
What species can I hunt in Unit 31?
Unit 31 has open seasons for multiple big-game species. Confirm season dates and weapon legality with Idaho Fish and Game before applying or buying tags.
Are offline maps useful in GMU 31?
Yes. Cell service is often limited or non-existent in the core hunting areas of Unit 31. Having saved offline maps is critical for safety and staying on legal ground.
Is Unit 31 mostly public land?
Unit 31 is approximately 49.4% public (mixed public/private). Map study and boundary awareness are essential to avoid trespass.
Land Ownership Breakdown
Private49.59%
BLM23.12%
USFS18.72%
State7.51%
Other0.01%
Source: IDFG Hunt Planner · Inside Idaho.
Season and regulatory information sourced from Idaho Fish and Game proclamations. Land ownership data compiled from public records. Maps generated by Roam Idaho.
Upcoming Deadline 2 Days Left
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Terrain Breakdown
Key Insight
Predominantly Forest/Mountains
Prepare for steep elevation and spot-and-stalk tactics.
See terrain map
Land Access
Access Intel
Mixed Public/Private
Requires map study.
Land Ownership Map
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Pro Tip
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