Dams Pros and Cons PROS Dams can store

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Dams

Dams

Pros and Cons

Pros and Cons

PROS: • Dams can store rain water or water directly from the river itself.

PROS: • Dams can store rain water or water directly from the river itself. Then, in case of a Drought, the dam will still have a relatively constant supply of water. • Producing Power. • Controls flooding & provides recreational activities such as boating fishing and swimming, if the lake is not being used for drinking water (Dam Society).

Pros • Simple design makes for inexpensive repairs and maintenance costs (Dam Society). •

Pros • Simple design makes for inexpensive repairs and maintenance costs (Dam Society). • Produce inexpensive (after completion) and clean power. • Renewable energy source, because the water is not destroyed by passing through the dam.

Pros • If needed, dams can be shut down instantly, where thermal plants take

Pros • If needed, dams can be shut down instantly, where thermal plants take hours, and nuclear plants can take days! (Dam Society). • Very few breakdowns.

CONS: • Hydroelectric power production require flooding of entire valleys and scenic areas. •

CONS: • Hydroelectric power production require flooding of entire valleys and scenic areas. • Disrupts natural seasonal changes in he river, and ecosystems can be destroyed. • Ends flooding that help to clean out the silt in rivers, causing them to clog.

Cons • The silt that usually flows down to the Beaches and Estuaries is

Cons • The silt that usually flows down to the Beaches and Estuaries is block by the dam. • Studies show that the plant decay caused downstream of major dams produces as many greenhouse gasses as more conventional methods of producing electricity.

Cons • Dams are expensive to build, and due to drought may become useless,

Cons • Dams are expensive to build, and due to drought may become useless, or produce much less power than originally planned. • A dam being build in Quebec will end up flooding an area as large as Switzerland). • Dams can break in a massive flash flood.

Cons • Increase water loss due to evaporation • Destroy cultural ruins • Block

Cons • Increase water loss due to evaporation • Destroy cultural ruins • Block fish Migration • Change water temperature

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