Accession Number:

ADA025264

Title:

Scour and Fill in Ephemeral Streams.

Descriptive Note:

Interim technical rept. 1 Jun 74-31 Dec 75,

Corporate Author:

CALIFORNIA INST OF TECH PASADENA W M KECK LAB OF HYDRAULICS AND WATER RESOURCES

Personal Author(s):

Report Date:

1975-11-01

Pagination or Media Count:

204.0

Abstract:

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.

Subject Categories:

  • Hydrology, Limnology and Potamology
  • Soil Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE