Idaho Pronghorn

Unit 59A-1 (Arco Desert / Craters of the Moon)

Idaho Hunting Guide — Pronghorn

Unit 59A-1 covers the Arco Desert and Craters of the Moon region in south-central Idaho — volcanic lava fields, sagebrush flats, and open desert terrain east of the Snake River Plain. IDFG manages pronghorn in this unit through controlled hunts, and the volcanic terrain creates a distinctive hunting experience with lava rock breaks providing cover transitions unique to this part of Idaho. Tag quotas are limited and the remoteness of the unit keeps pressure minimal.

View Draw Odds Idaho Hunting Guide

Pronghorn Hunting in Unit 59A-1

Where to Find Pronghorn in Unit 59A-1

Pronghorn in Unit 59A-1 use the open sagebrush flats and margins of the volcanic terrain east of Craters of the Moon. The lava field boundaries create distinct habitat edges where pronghorn concentrate.

Sagebrush Flats Between Lava Fields

The sagebrush flats between lava fields in the Arco Desert are the primary pronghorn feeding and travel areas. Glass these open expanses from elevated lava rim positions at first light. Pronghorn visible from distance against the volcanic soil background.

Arco Desert Basin

The broad Arco Desert basin southwest of the town of Arco holds scattered pronghorn throughout the season. Water is scarce — stock tanks and natural desert seeps attract animals during warm-weather hunts. Locate water sources during pre-hunt scouting.

Lava Field Edges

The margins where the sagebrush transitions into the volcanic lava fields are productive glassing zones. Pronghorn move along these edges and are visible from considerable distance in the open terrain.

How to Hunt Unit 59A-1 Pronghorn

The volcanic terrain of Unit 59A-1 creates unique tactical considerations. Lava rock is noisy and sharp — approach routes require more planning than standard sagebrush desert stalks.

Avoiding Lava Rock in Stalk Routes

When planning a stalk, actively route around lava rock fields — they are extremely noisy underfoot and can damage footwear. Use the sagebrush corridors between lava fields for quiet approach. Glass from lava rim edges but stalk through the sage flats below the rim.

Water Source Ambush

Water sources in the Arco Desert are critical during late-summer hunts. BLM stock tanks and natural seeps attract pronghorn predictably. Set up downwind of a confirmed water source in the early morning — this is often more reliable than spot-and-stalk in the broken lava-and-sage terrain.

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Pronghorn Success Rates

Idaho controlled-hunt pronghorn success rates statewide run 75–90% for tag holders. Unit 59A-1's limited tags and knowledgeable hunters who have drawn after competitive application cycles typically achieve high success. The open terrain makes animal location straightforward once the desert is learned.

Pronghorn Draw Odds

Season	Tags	Applicants	Draw %	Pts Req
Rifle— Controlled	396	396	100.0%	0

Data from 2025 draw results. Resident odds shown.

Open in Draw Odds Engine

Unit 59A-1 pronghorn controlled hunt tags are issued through the IDFG draw. Check IDFG Hunt Planner for the specific hunt numbers associated with this unit and historical draw odds. Arco Desert units are typically moderately competitive — less demand than the most popular southwest Idaho units.

Unit Logistics & Expectations

Planning Notes

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Water

Very scarce natural water; carry adequate supply; locate BLM stock tanks in pre-hunt scouting

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Road Conditions

US-20 provides paved access through the area; BLM two-track roads into hunting areas require high-clearance 4WD

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Terrain Difficulty

Moderate — flat to rolling desert; lava rock terrain requires careful navigation on foot

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Hunting Pressure

Low — remote unit with limited tag quotas

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Cell Service

Limited near Arco; no service in the Arco Desert interior

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Nearest Town

Arco (basic services, 10–25 mi depending on access point); Idaho Falls (full services, 60+ mi)

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Permit Notes

Controlled hunt tag required; apply through IDFG spring draw; verify unit boundaries relative to Craters of the Moon National Monument — no hunting within the monument boundary

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Frequently Asked Questions

Can I hunt pronghorn near Craters of the Moon National Monument in Unit 59A-1?

Hunting is not permitted within Craters of the Moon National Monument boundaries, but Unit 59A-1 covers adjacent BLM land in the Arco Desert. Verify the exact hunt area boundaries in the IDFG regulations to ensure you are hunting in the designated area outside the monument boundary.

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Sources & Verification

Every fact on this page is tied to a primary source below. Last fact-checked 2026-04-17.

2025 Idaho Big Game Seasons & Rules — Idaho Department of Fish and Game · supports: Unit 59A-1 pronghorn controlled hunt designations, Season dates, Tag quota · accessed 2026-04-17
IDFG Hunt Planner (Interactive) — Idaho Department of Fish and Game · supports: Unit 59A-1 season selector, Hunt area boundaries, Access overview · accessed 2026-04-17
IDFG Hunt Planner — Controlled Hunt Draw Odds — Idaho Department of Fish and Game · supports: Draw odds for Unit 59A-1 pronghorn controlled hunts · accessed 2026-04-17
Craters of the Moon National Monument & Preserve — National Park Service — Craters of the Moon National Monument · supports: Boundary information relevant to adjacent hunting unit, Lava field terrain description · accessed 2026-04-17