
This is the most southeastern COA in Oregon and shares borders with Idaho and Nevada. It includes significant sections of the main stem Owyhee River, the Middle Fork Owyhee River, Little Owyhee River, and Toppin Creek. Its northern extent includes the three forks confluence, and its western border abuts the Little Louse Canyon COA (205) and includes the Fort McDermitt Reservation. Areas of special biological interest include Lookout Butte Wilderness Study Area, Owyhee River Canyon Wilderness Study Area, Upper West Little Owyhee Wilderness Study Area, and the Toppin Creek Butte Area of Critical Environmental Concern/Research Natural Area.
COA ID: 206
Ecoregions
Strategy Habitats

Aspen Woodlands
Aspen woodlands are woodland or forest communities, dominated by aspen trees with a forb, grass, or shrub understory. Aspen woodlands can also occur within conifer forests.

Natural Lakes
Natural lakes are relatively large bodies of freshwater surrounded by land. For the purposes of the Conservation Strategy, natural lakes are defined as standing water bodies larger than 20 acres, including some seasonal lakes.

Flowing Water and Riparian Habitats
Flowing Water and Riparian Habitats include all naturally occurring flowing freshwater streams and rivers throughout Oregon as well as the adjacent riparian habitat.

Sagebrush Habitats
Sagebrush habitats include all sagebrush steppe- and shrubland-dominated communities found east of the Cascade Mountains.

Wetlands
Wetlands are covered with water during all or part of the year. Permanently wet habitats include backwater sloughs, oxbow lakes, and marshes, while seasonally wet habitats include seasonal ponds, vernal pools, and wet prairies.
Strategy Species

Burrowing Owl (Observed)
Athene cunicularia hypugaea

California Myotis (Modeled Habitat)
Myotis californicus

Columbia Spotted Frog (Modeled Habitat)
Rana luteiventris

Ferruginous Hawk (Observed)
Buteo regalis

Great Basin Redband Trout (Documented)
Oncorhynchus mykiss newberrii

Greater Sage-Grouse (Observed)
Centrocercus urophasianus

Hoary Bat (Modeled Habitat)
Lasiurus cinereus

Kit Fox (Modeled Habitat)
Vulpes macrotis

Long-billed Curlew (Observed)
Numenius americanus

Long-legged Myotis (Observed)
Myotis volans

Pallid Bat (Modeled Habitat)
Antrozous pallidus

Pygmy Rabbit (Modeled Habitat)
Brachylagus idahoensis

Silver-haired Bat (Observed)
Lasionycteris noctivagans

Swainson’s Hawk (Observed)
Buteo swainsoni

Townsend’s Big-eared Bat (Modeled Habitat)
Corynorhinus townsendii

Western Toad (Observed)
Anaxyrus boreas

White-tailed Jackrabbit (Observed)
Lepus townsendii

Willow Flycatcher (Observed)
Empidonax traillii