Type size - +
Personal tools
You are here: Home Local Birding Information Important Bird Areas Important Bird Areas Map Columbia River Estuary
Document Actions

Columbia River Estuary

The Columbia River Estuary IBA runs from the Columbia River Plume in the Pacific Ocean to approximately river mile 60 at Crims Island (near Mayger, Oregon, and across from Stella, Washington).

Red Marker Columbia River Estuary
The Columbia River Estuary IBA runs from the Columbia River Plume in the Pacific Ocean to approximately river mile 60 at Crims Island (near Mayger, Oregon, and across from Stella, Washington).

Location: The Columbia River Estuary IBA runs from the Columbia River Plume to approximately river mile 60 at Crims Island (near Mayger, Oregon).

Description: The Columbia River Plume is a highly dynamic transition zone where freshwater from the Columbia River mixes with saltwater from the ocean. The summer plume generally pushes southward and occurs regularly offshore between Cape Meares, Oregon and Grays Harbor, Washington, while in winter it is regularly found northward and inshore (Guy, Zamon and Hunter, Jan 2008).

Ornithological Highlights: Annual seabird and marine mammal strip-transect counts have been conducted by NOAA Fisheries and OSU, and consistently record high numbers of seabirds using the area occupied by the Columbia River Plume.  Strong salinity gradients are most often encountered at Willapa Bay, Columbia River, and Cape Meares. Sooty Shearwaters and Common Murres are the numerically dominant seabird species. California Gulls, Brown Pelicans, Caspian Terns, Heerman's Gulls, DC Cormorants, Pelagic Cormorants, and Brandt's Cormorants also use the areas in spring, summer and fall. Marbled Murrelet and Rhinoceros Auklet are occasionally observed in the plume.  It is not uncommon to observe 1,000s to 10,000s of Sooty Shearwaters between April and September in the vicinity of the river mouth and plume. Common Murres, Double-crested Cormorants, Pacific Loons, Red-throated Loons, and Western Grebes also use the area and up to 1,000s.  Other species documented in the estuary include: Bufflehead, Caspian Tern, Great Blue Heron, Long-billed Curlew, Pied-billed Grebe, Red-necked Grebe, Western Snowy Plover, and Virginia Rail. The western extent of the Columbia River Estuary IBA is a designated Western Hemisphere Shorebird Reserve Network site.

For more information on the Columbia River Estuary IBA, please see the Technical Site Report in the National IBA database.

Links: 

46.2110275 -123.763482

Location: The Columbia River Estuary IBA runs from the Columbia River Plume to approximately river mile 60 at Crims Island (near Mayger, Oregon).

Description: The Columbia River Plume is a highly dynamic transition zone where freshwater from the Columbia River mixes with saltwater from the ocean. The summer plume generally pushes southward and occurs regularly offshore between Cape Meares, Oregon and Grays Harbor, Washington, while in winter it is regularly found northward and inshore (Guy, Zamon and Hunter, Jan 2008).

Ornithological Highlights: Annual seabird and marine mammal strip-transect counts have been conducted by NOAA Fisheries and OSU, and consistently record high numbers of seabirds using the area occupied by the Columbia River Plume.  Strong salinity gradients are most often encountered at Willapa Bay, Columbia River, and Cape Meares. Sooty Shearwaters and Common Murres are the numerically dominant seabird species. California Gulls, Brown Pelicans, Caspian Terns, Heerman's Gulls, DC Cormorants, Pelagic Cormorants, and Brandt's Cormorants also use the areas in spring, summer and fall. Marbled Murrelet and Rhinoceros Auklet are occasionally observed in the plume.  It is not uncommon to observe 1,000s to 10,000s of Sooty Shearwaters between April and September in the vicinity of the river mouth and plume. Common Murres, Double-crested Cormorants, Pacific Loons, Red-throated Loons, and Western Grebes also use the area and up to 1,000s.  Other species documented in the estuary include: Bufflehead, Caspian Tern, Great Blue Heron, Long-billed Curlew, Pied-billed Grebe, Red-necked Grebe, Western Snowy Plover, and Virginia Rail. The western extent of the Columbia River Estuary IBA is a designated Western Hemisphere Shorebird Reserve Network site.

For more information on the Columbia River Estuary IBA, please see the Technical Site Report in the National IBA database.

Links: 

In this section...
 
powered by Plone | site by Groundwire Consulting and served with clean energy