WWRC 89-28
New Technique for Measuring Fine Sediment in Streams
Abstract
Techniques commonly used to measure fine-sediment accumulation in streambed
gravels can be labor and equipment intensive. We evaluated the sediment trapping capabilities oF
modilied Whitlock-Vibert boxes under both laboratory and field conditions and compared the
accumulated fine sediment to that contained in adjacent gravels as indicated by McNeil core
samples. Our results suggest the boxes can be used as an alternative to core sampling for monitoring
intergravel fine sediment levels. Advantages include ease of transport to remote field sites, small
sample volumes, and reduced analysis time. Problems encountered were displacement of boxes
by flood and ice flows and inundation by large sediment spills.
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