SCOUR AND FILL IN EPHEMERAL STREAMS
In this report the classical concept that mean bed elevation over an entire stream reach is lowered by scour during flood-wave passage and is restored by deposition in the waning flood phase (mean-bed scour and fill) is challenged. The alternative that both scour and fill occur concurrently at different migrating loci within a reach (local scour and fill) is more consistent with published field data. The field and laboratory investigations reported suggest that mean-bed scour and fill in a uniform channel is minor compared to local scour and fill caused by bedform migration, and that maximum local scour and fill may occur on the waning flood in some instances.
- Also available as California Inst. of Tech., Pasadena, Div. of Geological and Planetary Sciences, Rept. No. contrib-2695.
California Institute of TechnologyWM Keck, Laboratory of Hydraulics and Water Resources
Pasadena, CA United States
- Foley, M G
- Publication Date: 1975-11
- Pagination: 204 p.
- TRT Terms: Banks (Waterways); Bridge abutments; Bridges; Channels (Waterways); Deposition; Depth; Embankments; Erosion; Failure; Field tests; Fills; Flood damage; Flood protection; Floods; Grain size (Geology); Hydraulic structures; Hydrodynamics; Instrumentation; Laboratory tests; Loads; Migration; Rainfall; Rivers; Runoff; Sand; Scour; Sedimentation; Sediments; Soils; Streams
- Uncontrolled Terms: Hydraulic models; Sediment transport
- Old TRIS Terms: Bed load; Bridge washouts; Channels; Deposition (Materials and soils); Ephemeral streams; Flood waves
- Subject Areas: Bridges and other structures; Geotechnology; Highways; Hydraulics and Hydrology;
- Accession Number: 00137209
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: KH-R-33 Intrm Rpt., ARO-1108.3-G5
- Contract Numbers: Grant DAHC04-74-, Grant NSF-GK-318
- Files: TRIS
- Created Date: Sep 4 1976 12:00AM