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Sampling Mud in the Elwha River Estuary

Detailed Description

USGS hydrologic technician Andrew Spanjer shovels Elwha River mud into a bucket for latter analysis in the lab. The USGS is monitoring turbidity at several locations in the Elwha River during the largest dam-removal project in United States history. The mud will be mixed with water to assess how different turbidity sensors react to different sediment concentrations using Elwha River sediment.

Elwha River (near Port Angeles, WA).


Public Domain.