How big is GMU 10 in Arizona?

GMU 10 (Unit 10 — Flagstaff, Kingman) covers about 2,256 square miles, ranging from roughly 4,800 to 7,500 feet in elevation. Area is computed from the unit boundary polygon.

What species does the catalog list for GMU 10?

Pronghorn, Rocky Mountain Elk, Mule Deer, Black Bear, Bighorn Sheep. For seasons, tags, and regulations, use the official Arizona agency resources linked on this page — this page carries no regulatory information.

GMU 10 Unit 10 — Flagstaff, Kingman

Arizona's blue-ribbon pronghorn country west of Flagstaff

Northern Arizona grasslands — Kaibab NF / Aubrey Valley · Last reviewed 2026-07-12

Mule deer buck trotting across open prairie at dusk

Area

2,256

sq mi

Public land

65%

approx.

Elevation

4,800–7,500

feet

Motorized

extensive

access

Overview

Sprawling Unit 10 stretches across the wide-open grasslands and pinyon-juniper of northern Arizona between Williams and Seligman, anchored by the legendary Aubrey Valley and Big Chino country. It is one of the state's premier pronghorn units — high harvest and high success on coveted, hard-to-draw tags — while also producing strong Rocky Mountain elk numbers and a general mule deer hunt. Land is a workable mosaic of Kaibab National Forest, BLM, and Arizona State Trust with private ranch inholdings, offering big, glassable terrain.

Terrain

Expansive high-desert grassland basins and valleys rimmed by pinyon-juniper hills and ponderosa on the higher ground toward Williams.

Cover: Open grassland and sagebrush flats in the valleys, transitioning to pinyon-juniper woodland and stands of ponderosa pine at higher elevations, with scattered stock tanks and playas.

Landmarks: Aubrey Valley · Big Chino Valley · Pica / Seligman country · Picacho Butte · Kaibab NF Williams District edge · Route 66 / Seligman corridor

Access

A patchwork of Kaibab NF, BLM, and State Trust intermixed with substantial private ranchland — Aubrey Valley in particular has private holdings, so verify boundaries before hunting. State Trust parcels require an Arizona State Land recreation permit. Extensive but rough two-track and forest-road network; a good land-ownership map or app is essential here.

Managers: USFS Kaibab NF, BLM, AZ State Trust, Private (large ranches / Aubrey Valley inholdings)

Access points: I-40 exits at Williams and Seligman · AZ-64 north from Williams · Historic Route 66 through Seligman · BLM and county roads into Aubrey/Big Chino · Kaibab NF roads off I-40

Species notes

Pronghorn

common trophy

The headline hunt — Aubrey Valley and the surrounding grasslands rank among Arizona's best pronghorn ground, with strong buck quality and high success on a limited, high-demand draw.

→Glass wide-open valleys from elevated two-tracks and rises
→Judge bucks at distance with a spotting scope before committing
→Spot-and-stalk using terrain folds, arroyos, and cuts
→Watch stock tanks and green feed in dry years
→Be patient — big open country rewards long observation over walking

Rocky Mountain Elk

abundant quality

A large annual elk harvest across the pinyon-juniper and ponderosa fringe; strong numbers and good access make this a productive general elk unit.

→Hunt the juniper-to-ponderosa transition and water sources
→Sit tanks and dirt catchments in dry early seasons
→Glass grassy openings within the pinyon-juniper at first light
→Cover ground between water and bedding cover
→Use the September rut near timber-meadow edges

Mule Deer

common opportunity

Desert-edge mule deer scattered through the pinyon-juniper and grassland breaks; a decent opportunity hunt rather than a trophy unit.

→Glass juniper ridges and draws at dawn and dusk
→Hunt the cover-to-openings transition
→Check water sources midday
→Still-hunt thicker pinyon-juniper pockets

Black Bear

limited opportunity

Black bear occur mainly in the higher forested ground toward Williams; a marginal presence, not a primary target.

→Focus the ponderosa and oak brush at higher elevations
→Work drainages with mast and berries
→Glass openings at dawn and dusk

Bighorn Sheep

limited trophy

A minimal, tightly limited bighorn presence in rugged rimrock — effectively a once-in-a-lifetime draw, not a general opportunity.

→Only relevant with a drawn tag
→Glass canyon rims and rocky escarpments
→Coordinate with AZGFD on current sheep locations

Pro tips

→This is a glassing unit — burn boot leather with your optics, not your feet, especially for pronghorn
→Aubrey Valley mixes public and private; confirm land ownership before every stalk
→Water is the key variable for both elk and pronghorn in dry years — map stock tanks and catchments
→Buy a State Trust recreation permit; state parcels are woven through the unit
→Carry plenty of water and a full-size spare — the two-tracks are hard on tires and services are far apart

Watch out for

!Large private ranch inholdings, especially around Aubrey/Big Chino — verify boundaries
!State Trust land requires an Arizona State Land recreation permit
!Hot, dry, waterless country early season — carry water for yourself and plan around game water
!Wind and afternoon storms; roads get slick and impassable when wet
!Fire restrictions in dry years

Logistics

Williams and Seligman offer fuel, food, and basic lodging right off I-40, with Flagstaff a short drive for full services. Expect dispersed camping on Kaibab NF and BLM; there are few developed facilities out in the grassland basins, so haul water and be self-sufficient. Long distances between services — top off fuel.

Nearest towns: Williams, Seligman, Ash Fork, Flagstaff, Chino Valley

Nearby units

GMU 19B · Unit 19B — Kingman GMU 9 · Unit 9 — Flagstaff GMU 7W · Unit 7W — Flagstaff GMU 17A · Unit 17A — Kingman

Seasons & regulations

This page carries no season dates or regulations. Get current rules from the official Arizona sources:

Research sources: AZGFD Hunt Arizona / Unit 10 pronghorn and elk guidelines · Kaibab NF Williams Ranger District maps · Arizona State Land Department recreation permits

FAQ

How big is GMU 10 in Arizona?: GMU 10 (Unit 10 — Flagstaff, Kingman) covers about 2,256 square miles, ranging from roughly 4,800 to 7,500 feet in elevation. Area is computed from the unit boundary polygon.
How much public land is in GMU 10?: Approximately 65% of the unit is public land. Primary managers: USFS Kaibab NF, BLM, AZ State Trust, Private (large ranches / Aubrey Valley inholdings). Always verify ownership boundaries on the ground.
What species does the catalog list for GMU 10?: Pronghorn, Rocky Mountain Elk, Mule Deer, Black Bear, Bighorn Sheep. For seasons, tags, and regulations, use the official Arizona agency resources linked on this page — this page carries no regulatory information.

Put GMU 10 on your map.

Boundary lines, public/private ownership, topo, and offline maps for this unit — in Baseline Maps, free for 14 days.

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