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Hells Canyon Sediment Collection

By Environmental Health Program
A man in a yellow personal flotation device waves from a metal boat on a reservoir with the shore in the background.
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Detailed Description

Field sampling in the Hells Canyon Reservoir Complex, with Dr. M. Marvin-DiPasquale at the bow of the sediment collection boat. Photographer: D. Krabbenhoft.

Sources/Usage

Public Domain.