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Dams
A barrier constructed across a waterway to control the flow or raise the level of water.
1,255 Questions
In what year did the water go over the spillway at Hoover Dam?
due to a very wet winter the water level in lake mead rose to flood level, the camp grounds and launching ramps where all under water. this took place in 1983
How are the dams affecting the Colorado river?
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generates hydroelectricity to power cities near the Colorado river such as Lake Havasu City.
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Provides more water to homes for drinking and cooking with.
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It prevents flooding in nearby cities
Natural dams are made of earth, or more rarely wood and silt (e.g. beavers). Manmade dams may consist of packed earth, or stone, or concrete.
What is the impact of the construction of dam on the surrounding landforms?
Reservoirs held behind dams affect many ecological aspects of a river. Rivers topography and dynamics depend on a wide range of flows whilst rivers below dams often experience long periods of very stable flow conditions or saw tooth flow patterns caused by releases followed by no releases. Water releases from a reservoir including that exiting a turbine usually contains very little suspended sediment, and this in turn can lead to scouring of river beds and loss of riverbanks; for example, the daily cyclic flow variation caused by the Glen Canyon Dam was a contributor to sand bar erosion. Older dams often lack a fish ladder, which keeps many fish from moving up stream to their natural breeding grounds, causing failure of breeding cycles or blocking of migration paths. Even the presence of a fish ladder does not always prevent a reduction in fish reaching the spawning grounds upstream. In some areas, young fish ("smolt") are transported downstream by barge during parts of the year. Turbine and power-plant designs that have a lower impact upon aquatic life are an active area of research. A large dam can cause the loss of entire ecospheres, including endangered and undiscovered species in the area, and the replacement of the original environment by a new inland lake. Large reservoirs formed behind dams have been indicated in the contribution of seismic activity, due to changes in water load and/or the height of the water table.
What kind of plants are used to make electricity for dams?
In big dams (like hoover or grand coulee), when the water flows through, it spins these huge magnets that creates static electricity in massive amounts that is then sent to a sub station to be processed from there.
How do you make a simple model of dam?
first you get some water then you pour it! first you get some water then you pour it! first you get some water then you pour it! first you get some water then you pour it!
How will building a dam affect people living nearby?
the habitats of the animals around it will be destroyed and the fishes may also lose their habitats due to flooding
Is the three gorges dam sustainable?
Well, there are many reasons as to why the Three Gorges Dam is and is not sustainable.
Sustainable:
- Will hold up against floods- protecting precious agricultural land and peoples lives.
- Will protect the Yangtze river from landslides-stops sediment from blocking up the rivers path.
Not sustainable:
- Will not hold out against typhoons (tornados or hurricanes in America)-they will just rip it up.
- Will not hold out against huge floods-giant floods will go over the top of the dam-letting water through and causing flooding on the land and increase water levels.
How many dams in Pakistan and where they are situated?
Akhori Dam
Donhngi Dam
Ghazi Barotha Dam
Gomal Dam
Gomal Zam Dam
Hub Dam
Kalabagh Dam
Karoonjhar Dam
Khanpur Dam
Mangla Dam
Mirani Dam
Shakidor Dam
Simly Dam
Tarbela Dam
Dams are put in place to hold back water. This is generally used to create a water reservoir, but can also sometimes be used as a form of flood control. Hydroelectric dams, like the Hoover Dam, hold back water to create water pressure, to push turbines that generate electricity. In the case of the Hoover Dam, which holds 9.2 trillion gallons of water, extremely massive amounts of water pressure are obtained, and the 17 turbines combined make 2.8GW of power, which is about as much as 3 nuclear power plants.
How does a hydroelectric dam change the type of energy?
There are several. Gravitational potential energy is transformed into linear kinetic energy, which is then transformed into rotational kinetic energy, which is then transformed into electrical energy.
How much would it cost to build a small water park?
The amount for a small waterpark is about $250 mil. dollars
Was the three gorges dam a success?
This really depends on your own point of view. In my opinion I think the Three Gorges Dam is a bad idea.
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It will undoubtedly prove a huge source of electricity for the People's Republic of China, and alleviate floods downstream, but at great social and environmental cost.
- It is an impervious or fairly impervious barrier put across a natural stream so that a reservoir is formed.
- This water is utilised as and when it is needed.
- Due to the construction of dam, water level in the river at its upstream side is very much increased, and a large area may be sub-merged depending upon the water spread of the reservoir so formed.
How many liters does the largest dam in the world hold?
The Three Gorges Dam in the People's Republic of China is the largest in the world in terms of magnitude, generation, and reservoir capacity. Its reservoir is estimated at 39.3 cubic kilometers worth of water. Converting the units that equals 39,300,000,000-liters of worth.
What is the famous dam built on Krishna river?
Basava Sagar Dam
Almatti Dam
Srisailam Dam
Nagarjuna Sagar Dam
Prakasham Barrage
Jurala Dam
Dhom Dam
Narayanpur Dam
Amar Dam
What dams are constructed on river indus?
Only one main dam, Tarbela Dam.
Other is for hydro-power generation only, called Ghazi-Barotha Dam. A barrage after Tarbela diverts some of the water towards this Dam and after generation of electricity the water is diverted back to indus.
Indus have many barrages. Jinnah barrage, Chashma barrage, Taunsa barrage, Guddu barrage, Shukkur barrage and Kotri barrage.
Dam under construction: Diamer-Bhasha Dam
Future Dam: Kala Bagh Dam
What is the function of a beaver's dam?
Beavers build Dams for food storage and protection. They build a dam to make an artificial lake, and then they proceed to build their lodge nearby.
The deeper water in a dam allows the beaver to travel near its home protected from other animals and predators. After the dam is built, the beaver will also dig channels leading away from the new dam, to create safe transport channels for when it is gathering more wood to continue building its dam and lodge.
Once its lodge and dam are built, the beaver will proceed to gather smaller pieces of wood, and take it to the deep bit of the new lake directly next to the dam, and will poke the wood into the mud. The cold water down there helps the wood stay much fresher for longer.
I have observed that beavers in the Rocky Mountains love to eat the bark off of the Aspen trees. To get the bark, they must fell the trees. As they use the trees closest to their beaver made lake, they get further and further away from the protection of the water of their dams. They then use the logs or limbs (they have already eaten the bark) to make the dam higher and push the water back to the edge of the aspen grove little by little. This is so they can reach the water quickly when a predictor comes around.
There is also a study of dam building beavers being serinaded by the sound of running water (via recording) in each case the beavers cover the speakers by the next day to silence the noise. I don't think it because of the sound as much as it is to prevent their predictors from using the sound to sneak up on them unnoticed.
How many gate open in hirakud dam now?
There are 64 sluice gates and 34 crest gates at the Hirakud dam for discharge of excess water, officials said.
What is the advantages of pumped storage reservoir?
Advantages:
• Balancing supply and demand
• Upgrade of cheap electricity at off-peak times to valuable energy at times of high demand.
• Profitable trade of energy
•Fast response (instantaneous)
• Frequency Control
• Voltage Control
• Blackstart Capabilities
•Reduced CO2 emissions
Disadvantages:
•Long construction times
• High capital expenditure
•Costs over 1.5 million euro per MW capacity
•Ecosystem damage and loss of land
What is the oldest dam in the world?
Undoubtedly, the "Grand Anicut" dam duilt by the king "Karikaala Chola I" in South India is THE oldest in the world. It was built in 150 A.D. by unhewn stones across the historic river Cauveri. It is 300 meters long and helps in the irrigation of 1,000,000 acres of agricultural land. It is THE only oldest dam still in use by the government of Tamil Nadu, INDIA.
