![](/media/COA_006_Columbia-River-Blind-Slough-Swamp_Herman-Biederbeck-ODFW-750x563.jpg)
This is a an extensive area on the lower Columbia River Estuary from east of Tongue Point upstream to Crims Island. The area encompasses the Julia B. Hanson and Lewis and Clark National Wildlife Refuges and the Blind Slough Swamp Preserve, which contains ancient Sitka spruce trees and is one of the best examples of swamps of its kind remaining in Oregon. The area is important to migratory and wintering waterfowl.
COA ID: 006
Ecoregions
Strategy Habitats
![Estuary Strategy Habitat, Siletz Bay](/media/Estuary_Siletz-Bay_DLCD-ODFW-e1450248704903-255x185.jpg)
Estuaries
Estuaries occur where freshwater rivers meet the oceanic salty waters, are influenced by tidal flooding, and experience frequent periodic changes in salinity, water levels, sunlight, and oxygen.
![Grassland Strategy Habitat](/media/Grasslands_West-Eugene-Wetlands-e1450248034479-255x185.jpg)
Grasslands
Grasslands include a variety of upland grass-dominated habitats, such as upland prairies, coastal bluffs, and montane grasslands.
![Coast Range Ecoregion](/media/Late-Successional-Mixed-Conifer-Forest_David-Patte_USFWS-e1449604051928-255x185.jpg)
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.
![Example of Oak Woodlands, which is a Strategy Habitat within the Oregon Conservation Strategy](/media/Oak-Woodland_Shawn-Woods-e1449604993826-255x185.jpg)
Oak Woodlands
Oak woodlands are characterized by an open canopy dominated by Oregon white oak.
![](/media/COA_004_Necanicum-River_Herman-Biederbeck-ODFW-2-247x185.jpg)
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](/media/Wetland_Cathy-Nowak_ODFW-e1449605097558-255x185.jpg)
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.
Strategy Species
![California Myotis on tree](/media/California-myotis-Michael-Durham-255x170.jpg)
California Myotis (Modeled Habitat)
Myotis californicus
![Caspian Tern](/media/Caspian-Tern_USFWS_980-255x185.jpg)
Caspian Tern (Observed)
Hydroprogne caspia
![Chinook Salmon - Spring/Summer Run](/media/Spring-Chinook_980-1-255x185.jpg)
Chinook Salmon (Documented)
Oncorhynchus tshawytscha
![Chinook Salmon - Spring/Summer Run](/media/Spring-Chinook_980-1-255x185.jpg)
Chinook Salmon (Documented)
Oncorhynchus tshawytscha
![Chum Salmon](/media/ChumSalmon_AndrewReding_980-2-255x185.jpg)
Chum Salmon (Documented)
Oncorhynchus keta
![](/media/Coastal-cutthroat-trout_Doug-Markle_460-255x137.jpg)
Coastal Cutthroat Trout (Documented)
Oncorhynchus clarki clarki
![](/media/Coastal-tailed-frog_USFWS_460-255x185.jpg)
Coastal Tailed Frog (Observed)
Ascaphus truei
![](/media/Coho_salmon_BLM_460-4-255x185.jpg)
Coho Salmon (Documented)
Oncorhynchus kisutch
![](/media/Columbia_torrent_salamander_Jonathan_Hakim_flickr_460-255x185.jpg)
Columbia Torrent Salamander (Modeled Habitat)
Rhyacotriton kezeri
![](/media/Columbian-White-tailed-Deer_USFWS_460-255x185.jpg)
Columbian White-tailed Deer (Observed)
Odocoileus virginianus leucurus
![](/media/Copes_giant_salamander_Jonathan_Hakim_flickr_460-255x185.jpg)
Cope’s Giant Salamander (Modeled Habitat)
Dicamptodon copei
![](/media/Fork-tailed-Storm-Petrel_dpereksta_4235_460-255x185.jpg)
Fork-tailed Storm-Petrel (Modeled Habitat)
Oceanodroma furcata
![](/media/Fringed-Bat-Michael-Durham-255x170.jpg)
Fringed Myotis (Modeled Habitat)
Myotis thysanodes
![](/media/Hoary-bat_Wikemedia_460-255x185.jpg)
Hoary Bat (Modeled Habitat)
Lasiurus cinereus
![Leach's Storm-Petrel](/media/Leachs20Storm-Petrel_dpereksta_0209_980-255x185.jpg)
Leach’s Storm-Petrel (Modeled Habitat)
Oceanodroma leucorhoa leucorhoa
![](/media/long-legged-Myotis-Michael-Durham-255x170.jpg)
Long-legged Myotis (Modeled Habitat)
Myotis volans
![](/media/Marbled_murrelet_USFS_460-255x185.jpg)
Marbled Murrelet (Observed)
Brachyramphus marmoratus
![](/media/Northern-red-legged-frog_Martyne-Reesman_460-255x182.jpg)
Northern Red-legged Frog (Observed)
Rana aurora
![](/media/Spotted-Owl_BLM_460-255x185.jpg)
Northern Spotted Owl (Observed)
Strix occidentalis caurina
![](/media/Olive-sided-Flycatcher_Dennis-Garrison_USFS_460-255x185.jpg)
Olive-sided Flycatcher (Observed)
Contopus cooperi
![](/media/Peregrine-Falcon_USFWS_460-255x185.jpg)
Peregrine Falcon (Observed)
Falco peregrinus anatum
![](/media/Purple-Martin_Keith-Kohl-255x185.jpg)
Purple Martin (Observed)
Progne subis arboricola
![](/media/Red-Tree-Vole-Michael-Durham-255x170.jpg)
Red Tree Vole (Modeled Habitat)
Arborimus longicaudus
![](/media/Silver-haired-bat_Roger-Rodriguez-255x185.jpg)
Silver-haired Bat (Modeled Habitat)
Lasionycteris noctivagans
![](/media/steelhead-rainbow-redband-247x185.jpg)
Steelhead / Rainbow / Redband Trout (Documented)
Oncorhynchus mykiss ssp
![](/media/Tufted-Puffin_USFWS_460-255x185.jpg)
Tufted Puffin (Observed)
Fratercula cirrhata
![Western Painted Turtle on a log](/media/W-Painted-Turtle_Keith-Kohl-255x171.jpg)
Western Painted Turtle (Observed)
Chrysemys picta bellii
![](/media/Western-Pond-Turtle_Keith-Kohl_460-255x185.jpg)
Northwestern Pond Turtle (Observed)
Actinemys marmorata
![](/media/Western-toad_460-255x185.jpg)
Western Toad (Modeled Habitat)
Anaxyrus boreas