Hayden Island-Government Island, COA 055

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Government Island (center) Photo Credit: Port of Portland

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

Recommended Conservation Actions

Improve grassland habitats for grassland associated species.
Improve habitats for amphibians and turtles.
Protect and enhance existing wetlands and riparian habitats.
Protect existing shoreline and shallow water habitats.
Protect habitat values from recreational uses.
Provide off-channel refugia for migrating and rearing fish

Local Conservation Actions and Plans

Potential Partners

Special Features

General

designated by Metro as a Regionally Significant Habitat Conservation Area.
Geographic location at/near confluence of two major rivers
Important stopover in Pacific Flyway and for migratory fish
Large mosaics of multiple priority habitats

Protected Areas

427-acre Jewett Lake Mitigation Site on Government Island
Government Island Game Management Area
Government Island State Recreation Area
Sand Island

Ecoregions

Finley Muddy Creek Area

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.

Strategy Habitats

Example of Oak Woodlands, which is a Strategy Habitat within the Oregon Conservation Strategy

Oak Woodlands

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.

Ducks on a wetland in Ladd Marsh Wildlife Area, Oregon

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.

Specialized Local Habitats

Grassland habitat
Large riverine islands at / near the confluence with Willamette River
Mature cottonwood gallery forest
Off-channel habitat
Sand and Dredge spoils
Shoreline and shallow water habitat

Strategy Species

California Myotis on tree

California Myotis (Modeled Habitat)

Myotis californicus

Cascade Torrent Salamander

Cascade Torrent Salamander (Modeled Habitat)

Rhyacotriton cascadae

Chinook Salmon - Spring/Summer Run

Chinook Salmon (Documented)

Oncorhynchus tshawytscha

Chipping Sparrow (Observed)

Spizella passerina

Chum Salmon

Chum Salmon (Documented)

Oncorhynchus keta

Clouded Salamander

Clouded Salamander (Modeled Habitat)

Aneides ferreus

Coastal Cutthroat Trout (Documented)

Oncorhynchus clarki clarki

Coho Salmon (Documented)

Oncorhynchus kisutch

Common Nighthawk (Modeled Habitat)

Chordeiles minor

Fringed Myotis (Observed)

Myotis thysanodes

Hoary Bat (Observed)

Lasiurus cinereus

Northern Red-legged Frog (Observed)

Rana aurora

Olive-sided Flycatcher (Modeled Habitat)

Contopus cooperi

Oregon Slender Salamander (Modeled Habitat)

Batrachoseps wrighti

Oregon Vesper Sparrow

Oregon Vesper Sparrow (Modeled Habitat)

Pooecetes gramineus affinis

Purple Martin (Observed)

Progne subis arboricola

Short-eared Owl (Observed)

Asio flammeus flammeus

Silver-haired Bat (Observed)

Lasionycteris noctivagans

Steelhead / Rainbow / Redband Trout (Documented)

Oncorhynchus mykiss ssp

Townsend's Big-eared Bat

Townsend’s Big-eared Bat (Modeled Habitat)

Corynorhinus townsendii

Western Bluebird (Modeled Habitat)

Sialia mexicana

Western Gray Squirrel (Modeled Habitat)

Sciurus griseus

Western Meadowlark (Observed)

Sturnella neglecta

Western Painted Turtle on a log

Western Painted Turtle (Observed)

Chrysemys picta bellii

Northwestern Pond Turtle (Modeled Habitat)

Actinemys marmorata

Willow Flycatcher

Willow Flycatcher (Observed)

Empidonax traillii

Yellow-breasted Chat (Observed)

Icteria virens auricollis