![](https://www.oregonconservationstrategy.org/media/COA_024_Mill-Creek_Bruce-Newhouse-e1452281943189-750x563.jpg)
Relatively small (15 sq mi) COA at the eastern edge of the Coast Range ecoregion, building from the Red Prairie-Mill Creek – Willamina Oaks COA in the Willamette Valley ecoregion, northwest of the town of Dallas.
COA ID: 024
Ecoregions
Strategy Habitats
![Grassland Strategy Habitat](https://www.oregonconservationstrategy.org/media/Grasslands_West-Eugene-Wetlands-e1450248034479-255x185.jpg)
Grasslands
Grasslands include a variety of upland grass-dominated habitats, such as upland prairies, coastal bluffs, and montane grasslands.
![Coast Range Ecoregion](https://www.oregonconservationstrategy.org/media/Late-Successional-Mixed-Conifer-Forest_David-Patte_USFWS-e1449604051928-255x185.jpg)
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.
![Example of Oak Woodlands, which is a Strategy Habitat within the Oregon Conservation Strategy](https://www.oregonconservationstrategy.org/media/Oak-Woodland_Shawn-Woods-e1449604993826-255x185.jpg)
Oak Woodlands
Oak woodlands are characterized by an open canopy dominated by Oregon white oak.
![](https://www.oregonconservationstrategy.org/media/COA_004_Necanicum-River_Herman-Biederbeck-ODFW-2-247x185.jpg)
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.
![Ducks on a wetland in Ladd Marsh Wildlife Area, Oregon](https://www.oregonconservationstrategy.org/media/Wetland_Cathy-Nowak_ODFW-e1449605097558-255x185.jpg)
Wetlands
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.
Strategy Species
![California Myotis on tree](https://www.oregonconservationstrategy.org/media/California-myotis-Michael-Durham-255x170.jpg)
California Myotis (Modeled Habitat)
Myotis californicus
![Clouded Salamander](https://www.oregonconservationstrategy.org/media/Clouded-salamander_980-255x185.jpg)
Clouded Salamander (Modeled Habitat)
Aneides ferreus
![](https://www.oregonconservationstrategy.org/media/Coastal-cutthroat-trout_Doug-Markle_460-255x137.jpg)
Coastal Cutthroat Trout (Documented)
Oncorhynchus clarki clarki
![](https://www.oregonconservationstrategy.org/media/Coastal-tailed-frog_USFWS_460-255x185.jpg)
Coastal Tailed Frog (Observed)
Ascaphus truei
![](https://www.oregonconservationstrategy.org/media/Columbia_torrent_salamander_Jonathan_Hakim_flickr_460-255x185.jpg)
Columbia Torrent Salamander (Modeled Habitat)
Rhyacotriton kezeri
![](https://www.oregonconservationstrategy.org/media/Fringed-Bat-Michael-Durham-255x170.jpg)
Fringed Myotis (Modeled Habitat)
Myotis thysanodes
![](https://www.oregonconservationstrategy.org/media/Hoary-bat_Wikemedia_460-255x185.jpg)
Hoary Bat (Modeled Habitat)
Lasiurus cinereus
![](https://www.oregonconservationstrategy.org/media/long-legged-Myotis-Michael-Durham-255x170.jpg)
Long-legged Myotis (Modeled Habitat)
Myotis volans
![](https://www.oregonconservationstrategy.org/media/Marbled_murrelet_USFS_460-255x185.jpg)
Marbled Murrelet (Modeled Habitat)
Brachyramphus marmoratus
![](https://www.oregonconservationstrategy.org/media/Spotted-Owl_BLM_460-255x185.jpg)
Northern Spotted Owl (Observed)
Strix occidentalis caurina
![](https://www.oregonconservationstrategy.org/media/Olive-sided-Flycatcher_Dennis-Garrison_USFS_460-255x185.jpg)
Olive-sided Flycatcher (Observed)
Contopus cooperi
![](https://www.oregonconservationstrategy.org/media/Peregrine-Falcon_USFWS_460-255x185.jpg)
Peregrine Falcon (Observed)
Falco peregrinus anatum
![](https://www.oregonconservationstrategy.org/media/Purple-Martin_Keith-Kohl-255x185.jpg)
Purple Martin (Observed)
Progne subis arboricola
![](https://www.oregonconservationstrategy.org/media/Red-Tree-Vole-Michael-Durham-255x170.jpg)
Red Tree Vole (Observed)
Arborimus longicaudus
![](https://www.oregonconservationstrategy.org/media/Silver-haired-bat_Roger-Rodriguez-255x185.jpg)
Silver-haired Bat (Modeled Habitat)
Lasionycteris noctivagans
![](https://www.oregonconservationstrategy.org/media/Southern_torrent_salamander_John_Clare_flickr_460-255x185.jpg)
Southern Torrent Salamander (Observed)
Rhyacotriton variegatus
![Western Painted Turtle on a log](https://www.oregonconservationstrategy.org/media/W-Painted-Turtle_Keith-Kohl-255x171.jpg)
Western Painted Turtle (Modeled Habitat)
Chrysemys picta bellii
![](https://www.oregonconservationstrategy.org/media/Western-Pond-Turtle_Keith-Kohl_460-255x185.jpg)
Northwestern Pond Turtle (Modeled Habitat)
Actinemys marmorata
![](https://www.oregonconservationstrategy.org/media/Western-toad_460-255x185.jpg)
Western Toad (Modeled Habitat)
Anaxyrus boreas