The Little North Santiam River COA (45 mi2) extends from Silver Falls State Park eastward into the Cascades toward the Willamette National Forest boundary. The area primarily consisted of mixed conifer forest and includes the headwaters of North Santiam and Pudding Rivers. It is comprised of a matrix of private industrial forest and both state and federal public recreational areas. This COA is adjacent to the Santiam Confluences 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
American Pika (Observed)
Ochotona princeps
Black Swift (Modeled Habitat)
Cypseloides niger borealis
California Myotis (Modeled Habitat)
Myotis californicus
Cascade Torrent Salamander (Observed)
Rhyacotriton cascadae
Chipping Sparrow (Modeled Habitat)
Spizella passerina
Clouded Salamander (Observed)
Aneides ferreus
Coastal Cutthroat Trout (Documented)
Oncorhynchus clarki clarki
Coastal Tailed Frog (Observed)
Ascaphus truei
Common Nighthawk (Modeled Habitat)
Chordeiles minor
Fringed Myotis (Modeled Habitat)
Myotis thysanodes
Great Gray Owl (Observed)
Strix nebulosa
Harlequin Duck (Observed)
Histrionicus histrionicus
Hoary Bat (Modeled Habitat)
Lasiurus cinereus
Long-legged Myotis (Observed)
Myotis volans
American Goshawk (Modeled Habitat)
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 Vesper Sparrow (Modeled Habitat)
Pooecetes gramineus affinis
Western Purple Martin (Observed)
Progne subis arboricola
Red Tree Vole (Observed)
Arborimus longicaudus
Short-eared Owl (Modeled Habitat)
Asio flammeus flammeus
Silver-haired Bat (Observed)
Lasionycteris noctivagans
Townsend’s Big-eared Bat (Observed)
Corynorhinus townsendii
Western Bluebird (Modeled Habitat)
Sialia mexicana occidentalis
Western Gray Squirrel (Modeled Habitat)
Sciurus griseus
Western Meadowlark (Modeled Habitat)
Sturnella neglecta
Western Painted Turtle (Modeled Habitat)
Chrysemys picta belli
Northwestern Pond Turtle (Modeled Habitat)
Actinemys marmorata
Western Toad (Modeled Habitat)
Anaxyrus boreas
Willow Flycatcher (Modeled Habitat)
Empidonax traillii
Yellow-breasted Chat (Modeled Habitat)
Icteria virens auricollis