Unit 51 Sumpter
Elkhorn Mountains to the Ironside high desert — a big, mixed-ownership unit spanning Oregon's highest Blue Mountain peaks and low sage-and-ranch country.
Blue Mountains · Last reviewed 2026-07-12
Area
1,528
sq mi
Public land
45%
approx.
Elevation
3,400–9,106
feet
Motorized
moderate
access
Overview
The Sumpter Unit (Unit 51) is a large, varied unit in Baker and Grant counties, running from Ironside northwest through Austin Junction and the Sumpter Valley up over the summit of the Blue Mountains and across the Elkhorn Mountains toward North Powder and Baker City. Land ownership is a checkerboard — roughly 45 percent public, split between the Malheur and Wallowa-Whitman National Forests, Vale BLM, and substantial private ranch and timber ground in the valleys. The high Elkhorns (Rock Creek Butte, at 9,106 feet the tallest point in the Blue Mountains) hold Rocky Mountain elk, mule deer, California bighorn sheep, black bear, and cougar, while the drier southern reaches toward Ironside carry pronghorn. It is classic Blue Mountains hunting with the added wrinkle of navigating private ground for access.
Terrain
Dramatic relief from sagebrush valleys and river bottoms near 3,400 feet up to the granite crest of the Elkhorn Mountains, topping out at Rock Creek Butte (9,106 ft), the highest point in the Blue Mountains. Timbered mid-slopes give way to alpine rock and cirque basins in the high Elkhorns, with the historic gold-dredged Sumpter Valley in the middle.
Cover: Ponderosa pine, Douglas-fir, western larch, grand fir, and lodgepole across the forested slopes, thinning to subalpine fir, whitebark pine, and alpine rock and meadow at the Elkhorn crest. Lower valleys and the southern Ironside country open into sagebrush-bunchgrass rangeland, agricultural bottoms, and juniper.
Landmarks: Elkhorn Mountains / Rock Creek Butte (9,106 ft) · Sumpter Valley and historic gold dredge · Anthony Lakes area · Powder River / Sumpter · Austin Junction (US 26 / OR 7) · Ironside and the southern high desert
Access
About 45 percent public, so access takes planning. The high Elkhorns and the forested northwest are national forest with road and trail access, while much of the lower valley and southern Ironside country is private ranch land requiring permission. Learn where BLM and USFS boundaries meet private, and respect Elkhorn Wildlife Area and travel-management closures. ODFW Baker City office: 541-523-6832.
Managers: USFS - Wallowa-Whitman National Forest, USFS - Malheur National Forest, BLM - Vale District, Private ranch and timber
Access points: OR Highway 7 through the Sumpter Valley · US 26 at Austin Junction · Interstate 84 near North Powder / Baker City · Anthony Lakes Road / Elkhorn Drive Scenic Byway · Forest roads out of Sumpter and Granite · Ellis Road and southern BLM routes toward Ironside
Species notes
Rocky Mountain Elk
common qualityRocky Mountain elk hold in the timbered Elkhorn and Blue Mountain country. Herds shift between forest security cover and meadow feed, and mature bulls are taken each fall by hunters who work the high timber and manage private-land access on the winter fringe.
- →Hunt security timber and north slopes near meadow and cut edges in the forested northwest
- →Push into the higher Elkhorn basins away from road pressure
- →Glass openings and old burns at dawn and dusk
- →Locate private/public boundaries early — elk use the ranch valleys hard in cold weather
Mule Deer
common opportunityMule deer range from the high Elkhorn summer country down onto lower winter range and the sage-and-juniper breaks. Bucks are available across the elevational gradient, with the biggest often on lightly hunted private or in the rugged high country.
- →Glass high meadows, burns, and rocky basins early season
- →Work sage-timber transition zones and canyon breaks as weather cools
- →Still-hunt timbered benches midday
- →Secure private-land permission in the valleys for pressured, mature bucks
Pronghorn
limited opportunityPronghorn occupy the drier, open southern reaches of the unit toward Ironside on sage-bunchgrass rangeland and BLM ground, a limited controlled-hunt opportunity on the high-desert fringe.
- →Glass wide-open sage flats and low ridges at long range
- →Use terrain and the spot-and-stalk on flat, open country
- →Focus on BLM ground and secure access across intervening private ranch land
- →Water sources and two-tracks concentrate animals in dry early-fall conditions
Black Bear
common opportunityBlack bear inhabit the forested drainages and berry country of the Elkhorn and Blue Mountain slopes, with spring and fall opportunity.
- →Glass green south slopes and logged units in spring
- →Hunt berry fields and riparian brush late summer into fall
- →Watch meadow and burn edges at first and last light
Cougar
common opportunityCougar follow the deer and elk throughout the unit and may be taken on a general tag while hunting other game.
- →Cut fresh tracks on snow along roads and ridgelines
- →Hunt near deer and elk concentrations
- →Call in canyon and rimrock country in winter
Pro tips
- →This unit is really two hunts — high alpine Elkhorn country and low sage/ranch country — plan for whichever species you drew
- →The Elkhorn crest and its basins offer some of the best backcountry escape from road pressure
- →Map private vs. public carefully; the 45 percent public is patchy and boundary mistakes are easy
- →Watch the Elkhorn Wildlife Area and travel-management closures near winter range
- →Time high-country deer and elk before the first hard snow flips them downhill
Watch out for
- !Roughly half the unit is private — verify boundaries and get permission before hunting valley ground
- !Early Elkhorn snowstorms can close high roads and strand vehicles
- !Steep alpine terrain in the high Elkhorns is demanding and requires real packing plans
- !Southern desert access can require crossing private ranch land to reach BLM
- !Bighorn are present but strictly limited-entry — know your legal quarry
Logistics
Baker City is the main hub for fuel, lodging, and supplies, with smaller services in Sumpter and North Powder. Dispersed forest camping is available in the Elkhorns and around Anthony Lakes; the Sumpter Valley and I-84 corridor offer motels and RV options. Cell coverage is decent near town and I-84 but drops off fast in the high country and the southern desert.
Nearest towns: Baker City, Sumpter, North Powder, Unity, Ironside, Prairie City
Seasons & regulations
This page carries no season dates or regulations. Get current rules from the official Oregon sources:
Research sources: ODFW Sumpter Unit 51 · USFS Wallowa-Whitman National Forest / Elkhorns · BLM Vale District
FAQ
- How big is Unit 51 in Oregon?
- Unit 51 (Sumpter) covers about 1,528 square miles, ranging from roughly 3,400 to 9,106 feet in elevation. Area is computed from the unit boundary polygon.
- How much public land is in Unit 51?
- Approximately 45% of the unit is public land. Primary managers: USFS - Wallowa-Whitman National Forest, USFS - Malheur National Forest, BLM - Vale District, Private ranch and timber. Always verify ownership boundaries on the ground.
- What species does the catalog list for Unit 51?
- Rocky Mountain Elk, Mule Deer, Pronghorn, Black Bear, Cougar. For seasons, tags, and regulations, use the official Oregon agency resources linked on this page — this page carries no regulatory information.
Put Unit 51 on your map.
Boundary lines, public/private ownership, topo, and offline maps for this unit — in Baseline Maps, free for 14 days.