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Measuring the fraction of pool volume filled with fine sedimentAuthor(s): Sue Hilton; Thomas E. Lisle
Source: Research Note PSW-RN-414. Albany, California: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture. 11 p.
Publication Series: Miscellaneous Publication
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DescriptionThe fraction of pool volume filled with fine sediment (usually fine sand to medium gravel) can be a useful index of the sediment supply and substrate habitat of gravel-bed channels. It can be used to evaluate and monitor channel condition and to detect and evaluate sediment sources. This fraction (V*) is the ratio of fine-sediment volume to pool water volume plus fine-sediment volume. These volumes are computed for the residual portion of the pool that lies below the elevation of the downstream riffle crest. Fine-sediment thickness is measured by driving a graduated metal probe into a fine-grained deposit until the underlying coarser substrate is felt.
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CitationHilton, Sue; Lisle, Thomas E. 1993. Measuring the fraction of pool volume filled with fine sediment. Research Note PSW-RN-414. Albany, California: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture. 11 p.
KeywordsPSW4351, fine sediment, pools, monitoring, sedimentation, fish habitat
- Measuring the fraction of pool volume filled with fine sediment
- The volume of fine sediment in pools: An index of sediment supply in gravel-bed streams
- Fine bed material in pools of natural gravel bed channels
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