Columbia River islands comprised of 826-acre West Hayden Island located north of the City of Portland just outside city limits and the Government Island complex located between River Mile 111 and 119. The complex includes Lemon and McGuire Islands and total about 2,225 acres.
COA ID: 055
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.
Oak woodlands are characterized by an open canopy dominated by Oregon white oak.
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.
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.
California Myotis (Modeled Habitat)
Cascade Torrent Salamander (Modeled Habitat)
Chinook Salmon (Documented)
Chipping Sparrow (Modeled Habitat)
Chum Salmon (Documented)
Clouded Salamander (Modeled Habitat)
Coastal Cutthroat Trout (Documented)
Oncorhynchus clarki clarki
Coho Salmon (Documented)
Common Nighthawk (Modeled Habitat)
Fringed Myotis (Modeled Habitat)
Hoary Bat (Modeled Habitat)
Northern Red-legged Frog (Observed)
Olive-sided Flycatcher (Modeled Habitat)
Oregon Slender Salamander (Modeled Habitat)
Oregon Vesper Sparrow (Modeled Habitat)
Pooecetes gramineus affinis
Short-eared Owl (Observed)
Asio flammeus flammeus
Silver-haired Bat (Modeled Habitat)
Steelhead / Rainbow / Redband Trout (Documented)
Oncorhynchus mykiss ssp
Townsend’s Big-eared Bat (Modeled Habitat)
Western Bluebird (Modeled Habitat)
Western Gray Squirrel (Modeled Habitat)
Western Meadowlark (Observed)
Western Painted Turtle (Observed)
Chrysemys picta bellii
Western Pond Turtle (Modeled Habitat)
Purple Martin (Observed)
Progne subis arboricola
Willow Flycatcher (Observed)
Yellow-breasted Chat (Observed)
Icteria virens auricollis