The Bull Run – Sandy River COA (200 mi2) includes the headwaters of the Sandy River and its tributaries, including the Bull Run River. Nearly all the Bull Run Watershed is contained within this COA, which is a protected area that provides drinking water to the city of Portland. This area is located almost entirely within the Mt. Hood National Forest. This COA is adjacent to the Lower Sandy River COA.
Ecoregions
West Cascades
The West Cascades ecoregion extends from east of the Cascade Mountains summit to the foothills of the Willamette, Umpqua, and Rogue Valleys, and spans the entire length of the state of Oregon. It is largely dominated by conifer forests, moving into alpine parklands and dwarf shrubs at higher elevations.
Willamette Valley
The Willamette Valley ecoregion is bounded on the west by the Coast Range and on the east by the Cascade Range. This long mostly level alluvial plain has some scattered areas of low basalt, and contrasts with productive farmland and large urban areas. It has the fastest-growing human population in the state resulting in challenges due to land-use changes.
Key Habitats
Grasslands
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
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 …
Oak Habitats
There are several oak habitat types in Oregon, where oaks comprise most of the canopy. These can include oak woodlands, oak forest, oak chaparral, and riparian oak. Oak savanna is covered in the Grasslands Key Habitat. Oaks may also co-dominate a canopy in oak/fir, oak pine, and oak hardwood habitats.
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.
Species of Greatest Conservation Need
Pacific Marten (Observed)
Martes caurina
American Pika (Observed)
Ochotona princeps
Black Petaltail (Observed)
Tanypteryx hageni
Black Swift (Modeled Habitat)
Cypseloides niger borealis
California Myotis (Observed)
Myotis californicus
Cascade Torrent Salamander (Observed)
Rhyacotriton cascadae
Cascades Frog (Observed)
Rana cascadae
Chinook Salmon (Documented)
Oncorhynchus tshawytscha
Clouded Salamander (Observed)
Aneides ferreus
Coastal Cutthroat Trout (Documented)
Oncorhynchus clarki clarki
Coastal Tailed Frog (Observed)
Ascaphus truei
Coho Salmon (Documented)
Oncorhynchus kisutch
Cope’s Giant Salamander (Observed)
Dicamptodon copei
Pacific Fisher (Modeled Habitat)
Pekania pennanti
Flammulated Owl (Modeled Habitat)
Psiloscops flammeolus
Fringed Myotis (Observed)
Myotis thysanodes
Great Gray Owl (Modeled Habitat)
Strix nebulosa
Harlequin Duck (Observed)
Histrionicus histrionicus
Hoary Bat (Observed)
Lasiurus cinereus
Larch Mountain Salamander (Observed)
Plethodon larselli
Long-legged Myotis (Observed)
Myotis volans
American Goshawk (Observed)
Accipiter atricapillus
Northern Red-legged Frog (Observed)
Rana aurora
Northern Spotted Owl (Observed)
Strix occidentalis caurina
Olive-sided Flycatcher (Observed)
Contopus cooperi
Oregon Slender Salamander (Observed)
Batrachoseps wrighti
Oregon Spotted Frog (Observed)
Rana pretiosa
Western Purple Martin (Observed)
Progne subis arboricola
Red Tree Vole (Observed)
Arborimus longicaudus
Silver-haired Bat (Observed)
Lasionycteris noctivagans
Steelhead / Rainbow / Redband Trout (Documented)
Oncorhynchus mykiss ssp
Townsend’s Big-eared Bat (Observed)
Corynorhinus townsendii
Western Painted Turtle (Modeled Habitat)
Chrysemys picta belli
Northwestern Pond Turtle (Observed)
Actinemys marmorata
Western Toad (Observed)
Anaxyrus boreas