Geographic boundaries of the COAs were updated for the 2026 State Wildlife Action Plan and the associated COA profiles are intended to provide additional information. Content of each COA profile is being refined and will be updated to reflect current conditions when feasible. Please help us by submitting information on Local Conservation Actions, Plans, or Potential Partners to: OCS.revision@odfw.oregon.gov.
The McKenzie River Area COA (116 mi2) extends from the confluence with the Willamette River upstream to Sardine Butte and includes the associated floodplain, tributaries, and upland habitats of the McKenzie River. This COA is adjacent to the Upper Willamette River Floodplain, Coburg Ridge and Mohawk River COAs.
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
American Goshawk (Observed and Modeled)
Astur atricapillus
American Pika (Modeled)
Ochotona princeps
American Three-toed Woodpecker (Modeled)
Picoides dorsalis
American White Pelican (Observed)
Pelecanus erythrorhynchos
Black-backed Woodpecker (Modeled)
Picoides arcticus
Black Swift (Modeled)
Cypseloides niger borealis
Black Tern (Modeled)
Chlidonias niger
California Floater Mussel (Observed)
Anodonta californiensis
California Myotis (Observed and Modeled)
Myotis californicus
Cascade Torrent Salamander (Observed and Modeled)
Rhyacotriton cascadae
Cascades Frog (Observed and Modeled)
Rana cascadae
Caspian Tern (Observed)
Hydroprogne caspia
Chipping Sparrow (Observed and Modeled)
Spizella passerina
Clouded Salamander (Observed and Modeled)
Aneides ferreus
Coastal Cutthroat Trout (Modeled)
Oncorhynchus clarki clarki
Coastal Tailed Frog (Observed and Modeled)
Ascaphus truei
Columbian White-tailed Deer (Modeled)
Odocoileus virginianus leucurus
Common Nighthawk (Observed and Modeled)
Chordeiles minor
Flammulated Owl (Modeled)
Psiloscops flammeolus
Foothill Yellow-legged Frog (Modeled)
Rana boylii
Franklin’s Gull (Observed)
Leucophaeus pipixcan
Fringed Myotis (Modeled)
Myotis thysanodes
Golden Eagle (Observed and Modeled)
Aquila chrysaetos
Great Gray Owl (Observed)
Strix nebulosa
Harlequin Duck (Observed and Modeled)
Histrionicus histrionicus
Hoary Bat (Observed and Modeled)
Lasiurus cinereus
Kincaid’s lupine (Observed)
Lupinus oreganus
Lewis’s Woodpecker (Modeled)
Melanerpes lewis
Little Brown Myotis (Observed and Modeled)
Myotis lucifugus
Loggerhead Shrike (Modeled)
Lanius ludovicianus
Long-legged Myotis (Observed and Modeled)
Myotis volans
Northern Red-legged Frog (Observed and Modeled)
Rana aurora
Northern Spotted Owl (Observed and Modeled)
Strix occidentalis caurina
Northwestern Pond Turtle (Observed and Modeled)
Actinemys marmorata
Olive-sided Flycatcher (Observed and Modeled)
Contopus cooperi
Oregon Chub (Observed)
Oregonichthys crameri
Oregon Floater Mussel (Observed)
Anodonta oregonensis
Oregon Slender Salamander (Observed and Modeled)
Batrachoseps wrighti
Oregon Vesper Sparrow (Observed and Modeled)
Pooecetes gramineus affinis
Pacific Brook Lamprey (Modeled)
Occidentis pacifica
Pacific Fisher (Modeled)
Pekania pennanti
Pacific Lamprey (Observed and Modeled)
Entosphenus tridentatus
Pacific Marten (Observed and Modeled)
Martes caurina
Pallid Bat (Modeled)
Antrozous pallidus
Red Tree Vole (Observed and Modeled)
Arborimus longicaudus
Ringtail (Modeled)
Bassariscus astutus
Short-eared Owl (Observed and Modeled)
Asio flammeus flammeus
Sierra Nevada Red Fox (Modeled)
Vulpes vulpes necator
Silver-haired Bat (Observed and Modeled)
Lasionycteris noctivagans
Southern Torrent Salamander (Modeled)
Rhyacotriton variegatus
Townsend’s Big-eared Bat (Observed and Modeled)
Corynorhinus townsendii
Trumpeter Swan (Observed and Modeled)
Cygnus buccinator
Wayside aster (Observed)
Eucephalus vialis
Western Bluebird (Observed and Modeled)
Sialia mexicana occidentalis
Western Burrowing Owl (Modeled)
Athene cunicularia hypugaea
Western Gray Squirrel (Modeled)
Sciurus griseus
Western Grebe (Observed and Modeled)
Aechmophorus occidentalis
Western Long-eared Myotis (Observed and Modeled)
Myotis evotis
Western Meadowlark (Observed and Modeled)
Sturnella neglecta
Western Painted Turtle (Modeled)
Chrysemys picta belli
Western Pearlshell Mussel (Observed)
Margaritifera falcata
Western Purple Martin (Modeled)
Progne subis arboricola
Western Rattlesnake (Modeled)
Crotalus oreganus oreganus
Western Small-footed Myotis (Modeled)
Myotis ciliolabrum
Western Toad (Observed and Modeled)
Anaxyrus boreas
White-breasted Nuthatch (Pacific) (Modeled)
Sitta carolinensis aculeata
White-headed Woodpecker (Observed and Modeled)
Dryobates albolarvatus albolarvatus
Willamette daisy (Observed)
Erigeron decumbens
Willow Flycatcher (Observed and Modeled)
Empidonax traillii
Wilson’s Phalarope (Modeled)
Phalaropus tricolor
Winged Floater Mussel (Observed)
Anodonta nuttalliana
Wrentit (Observed and Modeled)
Chamaea fasciata
Yuma Myotis (Observed and Modeled)
Myotis yumanensis