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In this lesson we are going too discuss about the impacts of soil erosion

Answer Text:
Impact/effect of Soil Erosion
Positive
a) Creation of rich agricultural lands when eroded soil is carried and deposited e.g. loess and alluvial soils in lower courses of R.Tana.
b) Sand eroded from steep slopes and deposited on river bed is scooped for construction purposes e.g. Machakos.
Negative
a) Lowers the agricultural productivity of land when fertile top soil is eroded.
b) Contributes to desertification when top soil is eroded leaving bare ground destroying vegetation.
c) Causes water pollution when agro-chemicals and other chemicals are carried to rivers, lakes or oceans.
d) Contributes to flooding by blocking river channels causing them to burst their banks during the rain season flooding the adjacent areas.
e) Causes siltation of water reservoirs reducing their utility e.g. For H.E.P. generation.
f) May cause collapsing of structures such as buildings and bridges when soil around them is eroded weakening their foundation.