The Mill Creek COA (5 mi2) is located at the eastern edge of the Coast Range Ecoregion, northwest of the town of Dallas. This small area extends along Mill Creek and includes Dorn Peak and a checkerboard of private and public land ownership. This COA is adjacent to the Red Prairie – Mill Creek – Willamina Oaks South COA.
Ecoregions
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.
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
California Myotis (Modeled Habitat)
Myotis californicus
Clouded Salamander (Modeled Habitat)
Aneides ferreus
Coastal Cutthroat Trout (Documented)
Oncorhynchus clarki clarki
Coastal Tailed Frog (Observed)
Ascaphus truei
Columbia Torrent Salamander (Modeled Habitat)
Rhyacotriton kezeri
Fringed Myotis (Modeled Habitat)
Myotis thysanodes
Hoary Bat (Modeled Habitat)
Lasiurus cinereus
Long-legged Myotis (Modeled Habitat)
Myotis volans
Marbled Murrelet (Modeled Habitat)
Brachyramphus marmoratus
Northern Spotted Owl (Observed)
Strix occidentalis caurina
Olive-sided Flycatcher (Observed)
Contopus cooperi
Peregrine Falcon (Observed)
Falco peregrinus anatum
Western Purple Martin (Observed)
Progne subis arboricola
Red Tree Vole (Observed)
Arborimus longicaudus
Silver-haired Bat (Modeled Habitat)
Lasionycteris noctivagans
Southern Torrent Salamander (Observed)
Rhyacotriton variegatus
Western Painted Turtle (Modeled Habitat)
Chrysemys picta belli
Northwestern Pond Turtle (Modeled Habitat)
Actinemys marmorata
Western Toad (Modeled Habitat)
Anaxyrus boreas