The Clatskanie River COA (46 mi2) covers a large portion of the Clatskanie River Watershed, from its origins in the Coast Range down to the city of Clatskanie. It contains important riparian and upland habitat for many strategy species. This COA creates a contiguous chunk of habitat along with the Columbia River – Blind Slough Swamp and Clatsop State Forest – Jewel Meadows Area COAs.
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.
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
California Myotis (Modeled Habitat)
Myotis californicus
Chinook Salmon (Documented)
Oncorhynchus tshawytscha
Chum Salmon (Documented)
Oncorhynchus keta
Coastal Cutthroat Trout (Documented)
Oncorhynchus clarki clarki
Coastal Tailed Frog (Modeled Habitat)
Ascaphus truei
Coho Salmon (Documented)
Oncorhynchus kisutch
Columbia Torrent Salamander (Modeled Habitat)
Rhyacotriton kezeri
Cope’s Giant Salamander (Modeled Habitat)
Dicamptodon copei
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 Red-legged Frog (Observed)
Rana aurora
Northern Spotted Owl (Modeled Habitat)
Strix occidentalis caurina
Olive-sided Flycatcher (Observed)
Contopus cooperi
Peregrine Falcon (Observed)
Falco peregrinus anatum
Western Purple Martin (Modeled Habitat)
Progne subis arboricola
Red Tree Vole (Modeled Habitat)
Arborimus longicaudus
Silver-haired Bat (Modeled Habitat)
Lasionycteris noctivagans
Western Toad (Modeled Habitat)
Anaxyrus boreas
Steelhead / Rainbow / Redband Trout (Documented)
Oncorhynchus mykiss ssp