Larry Calame, a master on the Essayons, one of two hopper dredges owned and operated by the Portland District, Army Corps of Engineers, looks down into the dredge’s hopper bin during operations near Longview, Washington, July 25. With a volume of more than 6,400 cubic yards—or about 500 average-sized dump trucks—the hopper bin holds the sediment the dredge sucks up from the bottoms of rivers and harbors. The Essayons, operated by a merchant marine crew, helps maintain the entrance bars, rivers and harbors on the coasts of California, Oregon, Hawaii, Alaska and, in emergencies, the Mississ


Larry Calame, a master on the Essayons, one of two hopper dredges owned and operated by the Portland District, Army Corps of Engineers, looks down into the dredge’s hopper bin during operations near Longview, Washington, July 25. With a volume of more than 6,400 cubic yards—or about 500 average-sized dump trucks—the hopper bin holds the sediment the dredge sucks up from the bottoms of rivers and harbors. The Essayons, operated by a merchant marine crew, helps maintain the entrance bars, rivers and harbors on the coasts of California, Oregon, Hawaii, Alaska and, in emergencies, the Mississippi River.


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Keywords: channel, columbia, dredge, essayons, navigation, river, washington