ECO-SYSTEM

Terrestrial Flora - Plant life will not be endangered

• The proposed regulating dam site and impoundment areas are mainly logged over forests and do not encroach onto any ecologically sensitive areas
• No plant species will be threatened with extinction as a result of this project

Terrestrial Fauna - Animal life is not threatened

• The proposed impoundment area is poor in wildlife due to hunting pressure from the Orang Asli communities
• No endangered or endemic species of terrestrial fauna is expected to be threatened with extinction by this proposed project

Water Quality Downstream of the Dam

• During dry season, the river water quality is expected to improve because of the large release from the dam to dilute the polluted water from its tributaries
• During wet season,
  • the river water quality is expected to be slightly poorer as water from the dam catchment is being held back for storage
  • the impact is considered insignificant

Provision for Dam Siltation

• Allowance has been made in the design for dam siltation without affecting the water storage capacity for 100 years
• It was recommended to gazette the dam catchment as water catchment area to reduce the effect of siltation

Dam Site & Design

• The regional geology of the dam site is predominantly made up of granite and allied rocks
• Preliminary tests conducted indicated the bedrock formation is sound and tight
• The reservoir is designed not to fail by taking into account very high safety factors - including consideration of potential earthquake activities and review by overseas independent dam safety reviewer
• The failed dam in the vicinity in early days is a tin tailing dam built by miners more than 100 years ago