What is the advantages of a dam?

Extra water for irrigation. However as less water reaches the Mediterranean water has reversed
direction in the Suez Canal. The Suez Canal now flows into the Mediterranean bringing with it sea-li1

dam- a barrier to obstruct the flow of water, esp. one of earth, masonry, etc., built across a
stream or river. 2. a body of water confined by a dam. 3. any barrier resembling a damfe...

Denison Dam when to open the

dam?
What time of day is the spillway on
the Denison Dam opened. I would
like to fish below the dam when
water is at its lowest point.
Dams-types of dams and utilities of dams?
Arch dams Earth dams Gravity dams Rockfill dams
Buttress dams
Which dam is the longest dam in the world?
The hirakud dam in orissa, India is the longest dam of the
world
What do dam do?
A dam is a big wall to stop water getting through to
certain places. It is also used to irrigate water, and some
dams, to make hydroelectricity. Hydroelectricity is
electricity that comes from water....
How many dams are on the hoover dam?
The Hoover Dam is only one dam. If you are talking
about all the dams on the Colorado River there are six
dams Glen Canyon dam, Hoover dam, Davis dam, Parker
dam, Paulo Verde Diversion dam, and...

 Dams are extremely expensive to build and must be built to a very high standard.
 The high cost of dam construction means that they must operate for many decades to
become profitable.
 The flooding of large areas of land means that the natural environment is destroyed.
 People living in villages and towns that are in the valley to be flooded, must move
out. This means that they lose their farms and businesses. In some countries, people
are forcibly removed so that hydro-power schemes can go ahead.
 The building of large dams can cause serious geological damage. For example, the
building of the Hoover Dam in the USA triggered a number of earth quakes and has
depressed the earth's surface at its location.
 Although modern planning and design of dams is good, in the past old dams have
been known to be breached (the dam gives under the weight of water in the lake).
This has led to deaths and flooding.
 Dams built blocking the progress of a river in one country usually means that the
water supply from the same river in the following country is out of their control. This
can lead to serious problems between neighboring countries.
  Building a large dam alters the natural water table level. For example, the building of
the Aswan Dam in Egypt has altered the level of the water table. This is slowly
leading to damage of many of its ancient monuments as salts and destructive minerals
are deposited in the stone work from 'rising damp' caused by the changing water table
level

 Hydro powerdams can damage the surrounding environment and alter the quality of
the water by creating low dissolved oxygen levels, which impacts fish and the
surrounding ecosystems. They also take up a great deal of space and can impose on
animal, plant, and even human environments.

 Fish populations can be impacted if fish cannot migrate upstream past impoundments
dams to spawning grounds or if they cannot migrate downstream to the ocean.
Upstream fish passage can be aided using fish ladders or elevators, or by trapping and
hauling the fish upstream by truck. Downstream fish passage is aided by diverting fish
from turbine intakes using screens or racks or even underwater lights and sounds, and
by maintaining a minimum spill flow past the turbine.
 Hydro powercan impact water quality and flow. Hydro power plants can cause low
dissolved oxygen levels in the water, a problem that is harmful to riparian (riverbank)
habitats and is addressed using various aeration techniques, which oxygenate the
water. Maintaining minimum flows of water downstream of a hydro power
installation is also critical for the survival of riparian habitats.
 Hydro power plants can be impacted by drought. When water is not available, the
hydro power plants can't produce electricity.
 New hydro power facilities impact the local environment and may compete with other
uses for the land. Those alternative uses may be more highly valued than electricity
generation. Humans, flora, and fauna may lose their natural habitat. Local cultures
and historical sites may be flooded. Some older hydro power facilities may have
historic value, so renovations of these facilities must also be sensitive to such
preservation concerns and to impacts on plant and animal life.
 By 2020, it is projected that the percentage of power obtained from hydro power dams
will decrease to around four percent because no new plants are in the works, and
because more money is being invested in other alternative energy sources such as
solar power and wind power.
 dams detract from natural settings, ruin nature's work

dams dams have inhibited the seasonalhave inundated the spawning grounds of fish
dams may have dams have endangered some species of fish migration of fish reservoirs
can fosterinundated the potential for archaeological findings reservoir water can
evaporatediseases if not properly maintained  some researchers believe that reservoirs can
cause earthquakes significantly the reservoir created by the dam may inundate land, crops,
cities and villages thepeople may be displaced by the reservoir and have to find new homes
reservoir may cause instability of the hillsides

 Effect on water resources as precipitation and evaporation may change

 1) Expensive to build and maintain - most dams can be very expensive to build, and
even more expensive to maintain. Every dam has a design life. What happens when
the design life of the dam expires? Nobody wants to pay to retrofit the dam, but they
just want it to keep working forever.
 2) Endagering to many wildlife species - while some species of wildlife thrive in a
reservoir environment, most are affected in a negative way. Creative (...and
expensive) solutions usually need to be engineered to minimize the effect on the
wildlife

Que los dams son perfectos , pero vos os sun pelotudo fracasado en la vida q venis a estos
foro de wikiporonga a preguntar pelotudo

What are the advantages and disadvantages

of multipurpose dams?
1 dams are use for irrigation 2 dams water is
used to produced electricity generation 3
dames water is used for to supply water to
domestic & industrial uses 4 dames are used
for agriculture in...
What are the advantages and disadvantages
of dam building?
Advantages: Can produce hydro electric power,
acts as flood control, impounds water for
drinking and other uses.It also becomes a
tourists spot. Disadvantages: Destroys whole
ecosystems, causes...
What are the advantages and disadvantages
of dams?
hydro elec city
What are advantages or disadvantages of
building dams with the answers?
Advantages of dams: Dams are constructed
based only on safety It is used to store water It
used in hydroelectric power generation It is
used in irrigation purposes. Disadvantages of
dams: ...
Advantages and disadvantages of dams?
Advantages of dams: Dams are constructed
based only on safety It is used to store water It
used in hydroelectric power generation It is
used in irrigation purposes. Disadvantages of
dams: ...
Advantages: Can produce hydro electric power, acts as flood control, impounds water for drinking
and other uses.It also becomes a tourists spot.

Disadvantages: Destroys whole ecosystems, causes heavier silt deposits on the down stream river
beds. Poor design can lead to failure and mass flooding along with lose of life below the dam

Who startted tehri dam andolan?

1st time challenged (though unsuccessfully ) by theTBVSS (tehri bandh virodhi
sangharsh samiti ) in the supreme court of India , in 1985 otherwise a known
environmentalist sunderlal bahuguna started...
What are the advantages of Tehri Dam?
it gains lots of electricity. ryan giggs< thats me @@)
Where is tehri dam located?
in heaven
Denison Dam when to open the dam?
What time of day is the spillway on the Denison Dam opened. I would like to fish below
the dam when water is at its lowest point.
 What are dams?
1 a barrier to obstruct the flow of water, esp. one of earth, masonry, etc., built across a
stream or river. 2. a body of water confined by a dam. 3. any barrier resembling a dam
Tehri dam is the main dam of the Tehri Hydro Project, a major power project located near Tehri in
the state of Uttarakhand in India.

Andolan is Hindi and means "movement".

The dam has been the object of intense protests from environmental groups and the people of this
region. The issue of relocation of more than 1 lakh (100 thousand) people of the area has resulted in
protracted legal battles and has delayed the project. Besides this, environmental concerns regarding
the location of large dams in the fragile ecosystem of the Himalayan foothills, there are also
concerns regarding the dam's safety.

Tehri Project at Last

Tehri: An environmental hazard?

In mid-July 2006, one of the four 250-MW turbines of the 1000-MW project,
started producing electricity which is now feeding Delhi too. Very soon the
other three 250 MW turbines would be synchronized and connected to the grid.

Sunderlal Bahuguna, who won the Magsaysay award for the Chipko movement (whatever happened to Gaura
Devi, the intrepid woman of Reni village of Chamoli district who had actually initiated the movement?) was the
person who had opened the eyes of many a would be-environmentalist like this writer, by repeatedly; undertaking
fasts against the construction of the Tehri Hydro-electric project. A visit to the project site in January 1990
revealed the other side of a picture ,the most important of which was the assertion by a Soviet consultant
engineer to the project that even if a nine magnitude earthquake were to hit the dam 15 kilometre below the
surface, it would withstand the tremor.

The erstwhile Soviet Union was originally associated with this project with the USSR president assuring Prime
Minister Rajiv Gandhi an aid package of 1000 million roubles for the scheme. A number of Soviet consultants
were sent to Tehri, the leader of the team being Engineer Davidof had made the assertion.

The Tehri Hydro-Development Corporation (THDC), a joint venture of the Centre and the Uttar Pradesh (now
Uttaranchal) had been harried by continuous propaganda about the vulnerability of the proposed dam from
earthquake. An environmental group appointed by the Ministry of Environment and Forests to go into the
environmental impact assessment of the project, led by a well known soil scientist, went to the Tehri area and a
few days later, gave a report saying that since an earthquake of 8.5 magnitude was about to hit the area, the
project did not merit environmental clearance and should be scrapped.

This had flabbergasted the government. Here was a team led by a soil scientist having no knowledge of
earthquake engineering or seismicity, and his entire team having no qualified seismologist, declares that a 8.5
magnitude earthquake was to hit the area without having received any mandate from the government for
undertaking such a study! The Union Government, therefore, set up a five-member High Level Committee led by
Shri D.P. Dhoundial, Director General of the Geological Survey of India in order to look into the seismicity,
RIS(reservoir-induced seismicity) and related safety aspects of the Tehri Dam Project. Other members of this
team were: Dr. V.K Gaur, Eminent scientist, Dr. C.D. Thatte, Member of the Central Water Commission, Dr. D.
Guptasarma, Director, National Geographical Research Institute and Prof. L.S. Shrivastava, Head of the
Department of Earthquake Engineering, Roorkee University.

One may mention here that Dr. V.K Gaur was one of the strongest critics of the project and he was deliberately
included in order to give full opportunity to an opponent of the Dam to have his views recorded.

Yet, along with our other members, he appended his signature to the conclusion arrived at by this team that ?all
dangers arising out of seismicity have been taken note of and taken care of in the planning of the Tehri Dam
Project?
This report as also Dr. Gaur?s endorsement had created a sensation among the environmentalist lobby, three
journalist members of this lobby thereupon had asked the Secretary of the Ministry of Environment and Forests
to resign, creating an impression that the issue was one of conflict between the Ministry of Environment and
Forests and the Ministry of Steel and Mines, which had constituted the High Level Committee.

When in October last year a strong earthquake had hit the Kashmir area on both sides of the Line of Control
(LoC), not a single dam in the area including the Tehri Dam and the Tarbela Dam of Pakistan on the Indus had
been affected. Not even the Dam across the river Jhelum at Uri, on the Indian side of the LoC, built for a 480 MW
hydro-electric project, was affected although Uri was the worst hit town in Jammu and Kashmir this side of the
LoC. Modern technology is capable of making dams safe against earthquakes.

In mid-July 2006, one of the four 250-MW turbines of the 1000-MW project, started producing electricity which is
now feeding Delhi too. Very soon the other three 250 MW turbines would be synchronized and connected to the
grid.

It is now necessary for the Union Government to accord sanction first to the 400 MW Koteshwar project, about 22
km downstream of Tehri, where a 97.50 metre high dam is being built for this run-of-the-river power project. This
dam, the storage of water behind which is changeable daily, has been designed to regulate water releases from
Tehri reservoir for irrigation. This dam is scheduled to be commissioned in 2007-8.

The Tehru Pumped Storage Plant, which will utilise the Tehri and Koteshwar reservoirs as the upstream and
downstream reservoirs is designed to have an installed capacity of another 1000 MW of electricity. The Centre
has yet to accord sanction for this scheme.

The Tehri project will produce now 3568 million units of electricity, and 6200 million units every year on full
completion of the project. The waters from the reservoirs?upstream and downstream of the dam, will provide
additional irrigation to 2.70 million hectares of land and stabilise the existing irrigation for 6.04 lakh hectares in
Uttar Pradesh. The State of Uttaranchal will receive 12 per cent of the power produced at Tehri free of charge.

Following the objections by certain groups that the impounding of waters of the Bhagirathi behind the dam will
affect the self-purificational property of the waters of this holy river, the THDC has provided a 400 millimetre
diameter pipe running through dam at the intermediate level outlet having the capacity to carry 35 cubic foot per
second of Ganga water continuously in order to satisfy these elements that the self-purificational property of the
water even downstream of the dam will not be affected. Nevertheless, the National Environmental Engineering
Research Institute (NEERI), Nagpur, has given the verdict that the waters of the Bhagirathi which will move
through the dam and after generating electricity will re-join the mother river, will not lose its self-purificational
property

For the people of Delhi, the Tehri project will provide 300 cusecs (162 million gallons per day) of drinking water
from the dam. It will provide 200 cusecs for some towns in Uttar Pradesh.

The THDC has built a new township, called the New Tehri Township (NTT) has been built high up in the hills to
rehabilitate most of the people displaced by the Project. Other rehabilitation projects were also taken up.

ADVANTAGES OF HYDRO POWER

 Hydro power is a pollution free renewable source of energy

 Hydro power is the cheapest source of energy.
 Permits quick response to load changes and ideally suited for peaking power.
 Provides load stability to the system.

INDIA?S HYDRO POTENTIAL VIS-?-VIS NEED FOR TEHRI

 Total economic hydro potential 84000 mw.

 Presently exploited 21%
 Only few storage sites are available in India.
 With 90% of rainfall in about thirty days storage dams on a river system are a must for optimal
utilization.
 No storage site availablel on Ganga Tehri only suitable site.

BENEFITS FROM TEHRI

  2400MW of peaking power
 6532 million units of annual energy
 Additional energy from downstream run-of the river schemes
 Irrigation to 2.7 Lac hectares of new area, besides stabilistion of irrigation in existing 6.0 Laac hectares.

BENEFITS FROM TEHRI

 Water supply to Delhi

 162 million gallons of water supply to Delhi per day which will meet drinking water needs of 4 million
people.

What is the advantages of a dam?

Extra water for irrigation. However as less water reaches the Mediterranean
water has reversed direction in the Suez Canal. The Suez Canal now flows into
the Mediterranean bringing with it sea-life...
What are the advantages of dams?
mr. monkey where r u?
Advantages of dams?
they prevent flooding. they create a walk way.
they create hyrdroelectric power.
What are the advantages and disadvantages of
multipurpose dams?
1 dams are use for irrigation 2 dams water is
used to produced electricity generation 3 dames
water is used for to supply water to domestic &
industrial uses 4 dames are used for agriculture
in...
Described the tehri dam andolan?
Tehri dam is the main dam of the Tehri Hydro
Project, a major power project located near Tehri
in the state of Uttarakhand in India. Andolan is
Hindi and means "movement". The dam has
been the object...
What are dams?
1 a barrier to obstruct the flow of water,
esp. one of earth, masonry, etc., built across
a stream or river. 2. a body of water
confined by a dam. 3. any barrier
resembling a dam
Denison Dam when to open the dam?
What time of day is the spillway on the Denison
Dam opened. I would like to fish below the dam
when water is at its lowest point.
What is a dam?
A dam is a Short for digital asset management, a
system that creates a centralized repository for
digital files that allows the content to be
 archived, searched and retrieved A dam is a
Short for...
What does a dam do?
blocks water from flowing somewhere it
shouldn't
Dams-types of dams and utilities of dams?
Arch dams Earth dams Gravity dams Rockfill
dams Buttress dams

What do dam do A dam is a big wall to stop water getting through to certain places. It is
also used to irrigate water, and some dams, to make hydroelectricity. Hydroelectricity is electricity
that comes from water. It is a enviroment friendly way of getting energy or power.

Dams are, of coarse, found mostly on rivers though always on water of some kind. Some are huge
and some are smaller. For example, on the Euphrates River, the Ataturk dam, it very big and is used
for quite a few things. It is found in Southeastern Turkey and is the 5th biggest dam in the world