The northern boundary of this COA follows Buck Hollow Creek, with the remaining boundaries connecting to the Lower Deschutes River (COA ID 148) and Lawrence Grasslands (COA ID 152) COAs.
COA ID: 151
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.
Grasslands include a variety of upland grass-dominated habitats, such as upland prairies, coastal bluffs, and montane grasslands.
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.
Brewer’s Sparrow (Observed)
Spizella breweri breweri
Common Nighthawk (Observed)
Ferruginous Hawk (Observed)
Grasshopper Sparrow (Observed)
Ammodramus savannarum perpallidus
Hoary Bat (Modeled Habitat)
Lewis’s Woodpecker (Observed)
Loggerhead Shrike (Observed)
Long-billed Curlew (Modeled Habitat)
Northern Sagebrush Lizard (Modeled Habitat)
Sceloporus graciosus graciosus
Pallid Bat (Modeled Habitat)
Peregrine Falcon (Modeled Habitat)
Falco peregrinus anatum
Silver-haired Bat (Modeled Habitat)
Steelhead / Rainbow / Redband Trout (Documented)
Oncorhynchus mykiss ssp
Swainson’s Hawk (Observed)
Townsend’s Big-eared Bat (Modeled Habitat)
Burrowing Owl (Modeled Habitat)
Athene cunicularia hypugaea