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Fractional Water-Sediment Sampler¹

ABSTRACT

The fractional water-sediment sampler enables collecting large-volume representative samples of water and sediment from surface drainage streams. Free fall-flow, such as obtained at drop structures, is required for the operation of the sampler. The total sediment-laden water flow sampled can be split to 50 or 25% of the original sampled flow before being directed to containers by adding one or two splitting stages.

¹ Contribution from the Northwest Branch, SWCRD, Agricultural Research Service, USDA; Idaho Agr. Exp. Sta. cooperating.

² Machinist Lead Foreman and Soil Scientist, respectively, Snake River Conservation Research Center, Kimberly, Idaho, 83341.

Received for publication July 30, 1971. Accepted for publication December 1, 1971.