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Abstract
In support of beach-stability research, bedload and suspended sediment were measured during a steady flow of 5,880 ft3/s and receding flows from 12,100 to 5,660 ft3/s in the Colorado River above National Canyon, near Supai, Arizona, October 7-12, 1989. During steady flows, 75 percent of the mean total-sediment discharge of 128 t/d was in suspension and about half the total-sediement load was finer than 0.062 mm. Median grain sizes of bedload and bed material were 0.43 and 0.40 mm, respecively. Although steady-flow bedload transport varied from the mean by about 45 percent, suspended-sediment discharge remained constant within sampling error. Helley-Smith and BL-86-3 bedload samplers were not significantly different. At larger transport rates, however, the rates measured by the Helley-Smith exceeded those measure by the BL-86-3. Transport rates from bedload samples collected with Helley-Smith and BL-86-3 bedload samplers in sections 8 ft apart demonstrate no consistent autocorrelation or cross correlation. Cross-sectional bedload-transport rates measured concurrently or consecutively with the bedload samplers showed good agreement indicating that bedload varied by at least a factor of 2.4 during the steady-flow period. Ninety-five percent of the bedload transport during low flow occurred in the center one-third of the channel.
Study Area
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Low-flow sediment transport in the Colorado River |
| Volume | 1 |
| Year Published | 1991 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | Office of Surface Water |
| Description | 9 p. |
| Larger Work Type | Book |
| Larger Work Subtype | Conference publication |
| Larger Work Title | Proceedings of the Fifth Federal Interagency Sedimentation Conference |
| First page | 4-63 |
| Last page | 4-71 |
| Conference Title | Fifth Federal Interagency Sedimentation Conference |
| Conference Location | Las Vegas, Nevada |
| Conference Date | March 18-21, 1991 |
| Country | United States |
| State | Arizona |
| Other Geospatial | Colorado River |
| Google Analytic Metrics | Metrics page |