Bed-material characteristics of the Sacramento–San Joaquin Delta, California, 2010–13

Mathieu D. Marineau; Scott Wright

doi:10.3133/ds1026

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Bed-material characteristics of the Sacramento–San Joaquin Delta, California, 2010–13

Mathieu D. Marineau·Scott Wright

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Abstract

The characteristics of bed material at selected sites within the Sacramento–San Joaquin Delta, California, during 2010–13 are described in a study conducted by the U.S. Geological Survey in cooperation with the Bureau of Reclamation. During 2010‒13, six complete sets of samples were collected. Samples were initially collected at 30 sites; however, starting in 2012, samples were collected at 7 additional sites. These sites are generally collocated with an active streamgage. At all but one site, a separate bed-material sample was collected at three locations within the channel (left, right, and center). Bed-material samples were collected using either a US BMH–60 or a US BM–54 (for sites with higher stream velocity) cable-suspended, scoop sampler. Samples from each location were oven-dried and sieved. Bed material finer than 2 millimeters was subsampled using a sieving riffler and processed using a Beckman Coulter LS 13–320 laser diffraction particle-size analyzer. To determine the organic content of the bed material, the loss on ignition method was used for one subsample from each location. Particle-size distributions are presented as cumulative percent finer than a given size. Median and 90th-percentile particle size, and the percentage of subsample mass lost using the loss on ignition method for each sample are also presented in this report.

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Source-reported bounding extent: 37.66667° to 38.5° latitude; -122° to -121.1667° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Mathieu D. Marineau, Scott Wright. 2017-02-10. Bed-material characteristics of the Sacramento–San Joaquin Delta, California, 2010–13. https://doi.org/10.3133/ds1026

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