
The Columbia River dominates this coastal landscape as it flows past the historic port of Astoria toward the Pacific Ocean. This survey details the complex estuarine environment at the river's mouth, where the Lewis and Clark National Wildlife Refuge encompasses a vast network of islands and marshes including Karlson Island and Marsh Island. To the west, Fort Stevens State Park and Hammond guard the south bank, while the northern shore features small riverfront settlements like Chinook and McGowan.
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