This COA is mainly located within the Blue Mountains ecoregion of Umatilla, Union, and Wallowa Counties, but enters into a small section of the Columbia Plateau ecoregion along its northwest corner. Characterized by extensive mixed conifer forest, this rugged landscape also contains important native perennial grasslands, abundant springs, and abuts the North Fork Umatilla Wilderness and the Wenaha-Tucannon Wilderness.
COA ID: 157
Located in NE Oregon, the Blue Mountains ecoregion is the largest ecoregion in the state. It provides a diverse complex of mountain ranges, valleys, and plateaus that extend beyond Oregon into the states of Idaho and Washington.
The Columbia Plateau ecoregion was shaped by cataclysmic floods and large deposits of wind-borne silt and sand earlier in its geological history. It is dominated by a rolling landscape of arid lowlands dissected by several important rivers, and extends from the eastern slopes of the Cascades Mountains, south and east from the Columbia River to the Blue Mountains.
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.
Grasslands include a variety of upland grass-dominated habitats, such as upland prairies, coastal bluffs, and montane grasslands.
Late Successional Mixed Conifer Forests
Late successional mixed conifer forests provide a multi-layered tree canopy, including large-diameter trees, shade-tolerant tree species in the understory, and a high volume of dead wood, such as snags and logs.
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.
Ponderosa Pine Woodlands
Ponderosa pine woodlands are dominated by ponderosa pine, but may also have lodgepole pine, western juniper, aspen, western larch, grand fir, Douglas-fir, mountain mahogany, incense cedar, sugar pine, or white fir, depending on ecoregion and site conditions. Their understories are variable combinations of shrubs, herbaceous plants, and grasses.
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 include all sagebrush steppe- and shrubland-dominated communities found east of the Cascade Mountains.
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.
American Three-toed Woodpecker (Modeled Habitat)
Black-backed Woodpecker (Observed)
Brewer’s Sparrow (Modeled Habitat)
Spizella breweri breweri
Bull Trout (Documented)
Burrowing Owl (Observed)
Athene cunicularia hypugaea
California Myotis (Observed)
Columbia Spotted Frog (Observed)
Common Nighthawk (Modeled Habitat)
Ferruginous Hawk (Modeled Habitat)
Flammulated Owl (Observed)
Fringed Myotis (Modeled Habitat)
Grasshopper Sparrow (Modeled Habitat)
Ammodramus savannarum perpallidus
Great Gray Owl (Observed)
Hoary Bat (Observed)
Lewis’s Woodpecker (Observed)
Loggerhead Shrike (Modeled Habitat)
Long-billed Curlew (Modeled Habitat)
Long-legged Myotis (Observed)
Northern Sagebrush Lizard (Modeled Habitat)
Sceloporus graciosus graciosus
Olive-sided Flycatcher (Observed)
Pallid Bat (Observed)
Pileated Woodpecker (Observed)
Rocky Mountain Tailed Frog (Observed)
Silver-haired Bat (Observed)
Steelhead / Rainbow / Redband Trout (Documented)
Oncorhynchus mykiss ssp
Swainson’s Hawk (Observed)
Townsend’s Big-eared Bat (Modeled Habitat)
Western Toad (Modeled Habitat)
White-headed Woodpecker (Observed)