The Columbia River Bar on a spring tide, between the North and South Jetties at Cape Disappointment and Clatsop Spit. On the ebb the whole river and the tide pour out through the jetties in one jet over the bar, the reason this entrance is known as the Graveyard of the Pacific.
Source: NOAA Salish Sea and Columbia River Operational Forecast System (SSCOFS), nowcast surface current, via NCEI; coastline and jetties OpenStreetMap
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