Spanning an area in the southeastern corner Harney County and southwestern Malheur County, this COA encompasses the Trout Creek Mountains, the Oregon Canyon Mountains, and the Blue Mountains. It includes numerous Wilderness Study Areas, such as Disaster Peak, Alvord Desert, Fifteenmile Creek, Mahogany Ridge, Oregon Canyon, Twelvemile Creek, and Willow Creek.
Ecoregions
Key Habitats
Aspen Woodlands
Aspen (Populus tremuloides) woodlands are woodland and/or forest communities dominated by aspen trees with a forb, grass, and/or shrub understory. Aspen woodlands also occur within conifer forests.
Natural Lakes
Natural lakes are relatively large bodies of freshwater surrounded by land that were formed through geological processes, such as glacial scouring, tectonic movements, volcanic activity and river meander cutoffs. In Oregon, natural lakes are defined as standing water bodies larger than 20 acres, including some seasonal lakes. Depth is not a reference for characterization of …
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.
Species of Greatest Conservation Need
Alvord Chub (Documented)
Siphateles alvordensis
Black-necked Stilt (Modeled Habitat)
Himantopus mexicanus
Western Burrowing Owl (Observed)
Athene cunicularia hypugaea
California Myotis (Observed)
Myotis californicus
Ferruginous Hawk (Observed)
Buteo regalis
Greater Sage-Grouse (Observed)
Centrocercus urophasianus
Greater Sandhill Crane (Observed)
Antigone canadensis tabida
Hoary Bat (Modeled Habitat)
Lasiurus cinereus
Kit Fox (Observed)
Vulpes macrotis
Lahontan Cutthroat Trout (Documented)
Oncorhynchus clarki henshawi
Long-billed Curlew (Observed)
Numenius americanus
Long-legged Myotis (Observed)
Myotis volans
Pallid Bat (Observed)
Antrozous pallidus
Pygmy Rabbit (Observed)
Brachylagus idahoensis
Silver-haired Bat (Observed)
Lasionycteris noctivagans
Swainson’s Hawk (Observed)
Buteo swainsoni
Townsend’s Big-eared Bat (Observed)
Corynorhinus townsendii
Western Toad (Modeled Habitat)
Anaxyrus boreas
White-tailed Jackrabbit (Observed)
Lepus townsendii
Willow Flycatcher (Observed)
Empidonax traillii