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Tillamook Bay

Tillamook Bay is a small, shallow estuary about 60 miles west of Portland on the Oregon Coast.

Red Marker Tillamook Bay
Tillamook Bay is a small, shallow estuary about 60 miles west of Portland on the Oregon Coast.

Location: On the northern Oregon coast 60 miles west of Portland, adjacent to the town of Tillamook, Tillamook County.

Description: Tillamook Bay is a small, shallow estuary approximately 6.2 miles long and 2.1 miles wide. The bay averages only 6.6 feet in depth over a total area of 13 square miles, or 8,400 acres. At low tide, about 50% of the estuary bottom is exposed as intertidal mud flats. The Bay receives fresh water input from five rivers and exchanges ocean water through a single channel in the northwest corner. The estuary provides habitat for numerous fish, shellfish, crabs, birds, seals, and sea grasses.

Ornithological Highlights: Tillamook Bay supports almost 25% of the northern- and central-coast wintering waterfowl population in Oregon, with winter counts of approximately 7,500 waterfowl of 34 species. These include large numbers of Northern Pintail, Surf Scoter, and Bufflehead. Brown Pelicans utilize the Bay from May-December and peak in September with numbers in the low 100s. Western Sandpiper numbers range 1,000-3,000 in September, with Least Sandpiper numbers in the low 100s. Black-bellied Plover, Semipalmated Plover, Whimbrel, Sanderling, Dunlin, and Short-billed Dowitcher are also seen. Great Blue Herons are year-round residents, and there are two heron rookeries in the vicinity. The north end of Bayocean Spit hosts a population of State and Federally-listed (as threatened) Western Snowy Plover.

For more information on Tillamook Bay, please see the Technical Site Report in the National IBA database. 

Links:

45.5129 -123.9165

Location: On the northern Oregon coast 60 miles west of Portland, adjacent to the town of Tillamook, Tillamook County.

Description: Tillamook Bay is a small, shallow estuary approximately 6.2 miles long and 2.1 miles wide. The bay averages only 6.6 feet in depth over a total area of 13 square miles, or 8,400 acres. At low tide, about 50% of the estuary bottom is exposed as intertidal mud flats. The Bay receives fresh water input from five rivers and exchanges ocean water through a single channel in the northwest corner. The estuary provides habitat for numerous fish, shellfish, crabs, birds, seals, and sea grasses.

Ornithological Highlights: Tillamook Bay supports almost 25% of the northern- and central-coast wintering waterfowl population in Oregon, with winter counts of approximately 7,500 waterfowl of 34 species. These include large numbers of Northern Pintail, Surf Scoter, and Bufflehead. Brown Pelicans utilize the Bay from May-December and peak in September with numbers in the low 100s. Western Sandpiper numbers range 1,000-3,000 in September, with Least Sandpiper numbers in the low 100s. Black-bellied Plover, Semipalmated Plover, Whimbrel, Sanderling, Dunlin, and Short-billed Dowitcher are also seen. Great Blue Herons are year-round residents, and there are two heron rookeries in the vicinity. The north end of Bayocean Spit hosts a population of State and Federally-listed (as threatened) Western Snowy Plover.

For more information on Tillamook Bay, please see the Technical Site Report in the National IBA database. 

Links:

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