Hydroelectricity Pro’s and Con’s

IntroductionHydroelectricity is a good source of green

energy. It has been used as an environmental power source for years and is a good substitute for coal, oil and gas. Although there are positive aspects to hydroelectricity

There are also negatives.

First of all dams disrupt the major breeding cycles of many river life forms like the whitebait. Whitebait eggs are laid in swampy estuary’s by adult fish. When the eggs hatch the larvae swim back up the river where they can develop into adult fish. But they cannot do that if there is a giant dam in the way. If the fish cannot make it all the way upstream they cannot develop properly. And if they don’t develop, they won’t breed. This means that slowly they may die out.

They created a solution to this problem though. It is to create a stairway dam. Since fish already posses an unmatched jumping ability, it’s easy for them to jump over the dam this way.

Another problem caused by dams is that the people who decide where the dam is to be built may forget about perseverance, you see when a dam is built all the water behind the dam flows out and forms a lake or reservoir.

Another dam disadvantage is the lack of consideration for the land around where the dam is going to be constructed. When a dam blocks out a river the river behind the dam starts to fill up and spread out forming a lake or reservoir. If there is civilisation around the river they could be forced out, or even worse if no perseverance or warnings are made to alert the people they could be drowned in the rush, although this is extremely unlikely it is not impossible.

The solution to this problem is to simply avoid building dams near civilisation, and to persevere better.

The End