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Aerial photograph of two dredging vessels at the Columbia River mouth

By Pacific Coastal and Marine Science Center
Aerial photograph of two dredging vessels at the Columbia River mouth
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Detailed Description

Two dredging vessels, Essayons (government owned) and Bayport (contract vessel), at the Columbia River Mouth. These vessels dredge the 2-4 million cubic meters annually from the six-mile-long channel in the short weather/operations window available.

Sources/Usage

Public Domain.