Page 18 - GS58346 Tasik Chini

Sedimentation/ landslide

• Sediment and other organic pollutants are expected to increase with subsequent increase in the
surface runoff as a result of the change in land use pattern

• Sediment transport is an important element in the field of sedimentary geology, geomorphology, civil
engineering and environmental engineering. It is the movement of solid particles, typically due to a

combination of gravity acting on the sediments or the movement of the fluid in which the sediments are
entrained. Knowledge of sediment transport is most often used to determine whether erosion will The range of density of sediment in
occur, with the magnitude of this erosion or deposition and the distance over which it will occur. Sungai Jemberau, Tasik Chini

• Usually, the greater the flow, the more sediment will be conveyed or transported. Total sediment
transport in streams or rivers are categorized into bedload which are transported near or along the bed

by rolling, bounding and sliding; and suspended load which are carried in suspension through the
water column. (Bidorna B, et, al, 2016)

• The environmental impacts of sedimentation include the following: loss of important or sensitive

aquatic habitat, decrease in fishery resources, loss of recreation attributes, loss of coral reef
communities, human health concerns, changes in fish migration, increases in erosion, loss of wetlands,
nutrient balance changes, circulation changes, increases in turbidity , loss of submerged vegetation,

and coastline alteration.

Effect on esthetic value

• Deforestation give negative impact on perceived scenic beauty.

• Reddish patterns appeared to represent a dying forest.

• The lake discolored. Clear waters are now cloudy.