A dam was built in Canada years ago. And one day the controller thought that the water level was too high so he let the water run out into the river that had been dammed.
It just so happened that a large group of migrating cariboo wanted to cross that same river that same day. Needless to say the water level was so high in the river that all the cariboo drowned and never made it to the other side.
So my answer is: Maybe nothing bad will happen to us, but maybe a lot of bad things will happen the animals near the dam.
Obviously, a large area is submerged when a dam is built, and this may be home to unique and endangered flora and fauna. Water which flows from hydroelectric dams is from the bottom of the dam where it is cold, dark, low in oxygen, and almost lifeless. This affects the ecosystem for many miles downstream.Benefit
The reservoir created by a dam, while taking away some terrestrial habitat, can improve wetland, shoreline, and aquatic habitat.Another perspective...
I have not heard of any examples of reservoirs improving wetlands except maybe in arid climates, but then many types of wetlands do not naturally belong in arid climates. Also, they do not create aquatic habitat so much as just change it from a naturally flowing wild river to a lake, which is a completely different water body and supports a completely different ecosystem.
Dams do provide more shoreline probably, and also help control water supply, generate electricity, improve agriculture, help in flood control, and provide additional water contact recreational opportunities.
However, dams are, by and large, damaging to the environment. They disrupt the natural flow regime of a river, disconnecting the river from its flood plain. The previous commenter mentioned dams improving wetlands. That may be true around the reservoir, but usually, all the wetlands wetlands below the dam suffer and often disappear completely.
We like to think that reservoirs help to improve water supply and aid in flood control, but sometimes, dams can have exactly the opposite effect. In many years, average rainfall will result in our ability to operate dams to their full effect, capturing more the snowmelt, reserving water for increased demand later in the year, controlling potential flooding from heavy rainstorms, etc. And while engineeers have done a lot of good for us, I have zero confidence in the ability of engineers to overcome nature in the long run. A river and its wetlands are already designed to deliver exactly the amount of water for natural communities in the watershed. Wetlands have numerous functions essential to healthy riverine processes. They serve as habitat for aquatic and terrestrial wildlife, serve as nurseries for young fishes and amphibians, and help filter out pollutants. They also act like sponges, absorbing water during the spring melt and releasing it back to the river later in the year when the river requires more water. All of those ecosystem functions may be taken away when a dam is built.
In addition, natural communities in the river are adapted to river life. Dams interrupt those communities. Dams are responsible for endangering numerous species, including salmon and freshwater mussels. They are hurting salmon by impairing the ability of adult salmon to swim up their home rivers to spawn, and also impede the ability of spawned salmon fry to swim downstream as they migrate toward the ocean. Also, as a family, the Unionidae (freshwater mussels) are probably the most endangered family of any in the animal kingdom. Most freshwater mussels require flow, an some exist in very localized populations. So when a dam is built and suddenly there is no flow, whole species of mussels may go extinct, and many probably already have.Unintended consequences
Many dams have been built to control the flow of rivers. Recent flooding in the midwestern United States is thought to be caused not by climate change but the fact that the dams have allowed silt to build up and, in effect, have shallowed the riverbed. Periodic natural flooding creates a deeper channel and lessens the severity of future flood events, and this is not possible with the system of dams the way it is.
if a dam is built it will block the water from over flowing and ruining thesurroundings!!!!!!!!!!h iI'mnew so if anyone whats to talk go ahead!!!!!!!!!!
It decreases the amount of water in the river -APEX
Who built Itaipu dam?
all know animal,plant and insect life will be obliterated.no dam is justifiable.people must learn to live without electricity.
how did modifing Corps of engineers built levees to channel the rivers, built dam projects such as TVA
The Aswan Dam was built in 1968 and they finished the Dam in 1970.
what is the effect of tehri dam on environment
The dam is being built for the same reason Hoover Dam was built; to use hydroelectric power to make electricity.
the dam built on jhelum is mangla dam
The Aswan dam was built in 1970 Actually, the Aswan dam was built in 1968, and they finished in 1970. In actual life, it was built in 1960 and finished in 1970
the dam built the dam
what will happen if falls from a dam
there are two dams at Aswan the first is Aswan dam which built at the first cataract at Aswan city, the second is the High dam built south of the first one
The Aswan High Dam, commonly referred to as just the Aswan Dam, was built between the years of 1960 and 1970. The Aswan Low Dam, or Old Aswan Dam, was completed in 1902.
the Itaipu dam was built in February 1971 I DID MY RESEARCH
Jason Akhlabalkinoy built the Aswan dam in Egypt in 1960 and 1970
The Akosombo Dam was built to create hydroelectricity (energy/electricity) for Ghana.
the dam built on jhelum is mangla dam
The Koyna dam is built across the Koyna River.
It is believed the first Dam was built about 2600 or 2800 BC
Well constructors built the Hoover Dam with concrete and mixing stuff.
There is a dam at Assam in India, but no monument was moved. There is the Aswan Dam in Egypt and when it was built the Temples of Abu Simbel had to be moved and re-built.
The Hirakud Dam.
3 options it will move, adapt, or die.