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Browse more than 160,000 publications authored by our scientists over the past 100+ year history of the USGS.  Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.

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Suspended sediment in the Colorado River, 1925-41

This report gives the results of sediment-sampling studies of the Geological Survey in the Colorado River basin for the period from October 1, 1925, to September 30, 1941. Records are given for the entire period for the Grand Canyon gaging station and for shorter periods at other stations in the basin. The results reported consist of the records of the mean daily concentrations.of sediment for all
Authors
Charles S. Howard

The determination of thorium in high grade and low grade ores

No abstract available.
Authors
F. S. Grimaldi, Charlotte A. March
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