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Advantages of dams:

  1. Dams are constructed based only on safety
  2. It is used to store water
  3. It used in hydroelectric power generation
  4. It is used in irrigation purposes.
Disadvantages of dams:
  1. Requires skilled labour to construct
  2. Strong abutments is needed.
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14y ago
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13y ago

Positives:

-provides protection against floods

-very few break downs

-provides irrigation

-provides water supply

-improvement of navigation

-provide electric power

-mine waste retention

-recreation

Negatives:

-ecosystems can be destroyed

-expensive

-produce much less energy

-break in massive flash flood

-corrosion may occur

-fish may be damaged which causes population to decrease

-changes in channel morphology

-debris jammed in tributaries

-increased sediment storage

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11y ago

For the time it takes to fill the dam, there'd be no flow of water downstream. Might be awkward for someone in that direction who'd been relying on that water.

Depending on size, the area upstreams of the wall will be flooded. Kinda awkward for someone using that area of land.

A dam will prevent any fish from travelling up & down the river.

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7y ago

Man made-

1. Changes of the enviorment

Bever made-

2. unwanted still water-population in misquetoes
Advantages of overgrazing

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Wiki User

13y ago

the pros are :

-no floods

thats about it . oh and they're are no cons,unless the dam is not well maintained

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12y ago

they can cost alote of money

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Wiki User

15y ago

yes

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Q: What are positives and negatives for creating a dam?
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