Soil Erosion and Flood Risk Management

It was noticed that the pediment layer differed from the headwater area because of the slope which decreased
from the later to the former. Measured grain sizes at the pediment were much loamier and the gravel content
was lacking. Most moisture measurements were taken in the morning when soils were humid in the upper
soil layer while those taken in the afternoon had less humidity.
Fig. 4: Soil density and soil shear stress of test sites and averaged values for the pediment and headwater area
Soil density in the pediment area was measured with minimum and maximum recordings being taken at
location 002 and 007 respectively. The highest shear stress was also measured at the study site 005 and
minimum record taken at location 002. Mean soil density and soil shear stress in the pediment was lower
than that in the headwater area.
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