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What is sometimes build to control the flow of moving surface water?
Dam if I know. Sorry couldn't resist. It is a dam that crosses rivers to control the water flow. Dam's come in all sizes, shapes, and materials. One of the largest dams in the world is the Aswan dam that crosses the Nile River. It's a huge edifice made of cement and steel. Probably the smallest dams are the ones built by beavers. They use gnawed off branches and trees to block up small streams. Lots of man-made dams are built to provide hydro-electric power for the regional area. Hoover Dam in Nevada USA is such a dam. Others are built to provide flood control so that areas downstream don't get flooded out during heavy rainstorms for example. The Aswan Dam is both a flood control and power providing dam.
Once a dam is built upstream forming a lake upstream of the dam are you safe below the dam?
Absolutely
How much electricity does an average hydroelectric dam generate?
Although several large-scale dams can produce over 1000 MW, an average dam will produce anywhere from 80 MW to 500 MW. An average value for those would probably be about 200 MW.
What is increased in a dam by raising the water level?
Water pressure on the dam.
What nation shares the world's largest hydroelectric dam with Brazil?
The answer is Paraguay. The dam you are talking about is the Itaipú Dam, which is the world's largest hydroelectric power plant. However, the Itaipú Dam provides most of its energy supply to Brazil.
What is the difference between small hydro power and large hydro power?
Large hydro power would be a dam in a river, storing water and generating electricity for agricultural, industrial and domestic use. Small hydro power systems could be as small as a turbine in a stream providing electricity to a single farm.
Difference between a dam and a barrage?
what is barrage and headworks
What is difference between big dam and small dam?
big dams: big dams have become a matter of controversy. a large number of people are displaced when their homes and villages have to be submerged to creat big dams. small dams:as the work remains suspended,the costs escalate.it gets its support from non government organizations.small dams mayset up in seismic zones.
What are the difference between dam and retaining wall?
The only difference between them is that, a masonry dam retains the water behind it, while the retaining wall retains the earth materials at its back. The distribution of pressure along its height is also same to the masonry dam.
Is one large dam better than two or more small dams?
The answer depends on what you mean by "better", in other words, what your purpose is. The answer also depends on the dam sites and other factors such as construction cost. Lets assume you are talking about dams on a uniform valley, and that we ignore other factors such as construction expense. If the dams are to control erosion, then probably two dams are as good as one. If the dams are to provide a reservoir of drinking water, then its easy to see that one dam holds more water: just think of replacing the downstream small dam with the big dam (whose top is at greater elevation than the top of the upstream small dam) and you can visualize it holds more water than the two small dams.) If the dams are to generate electricity, then loosely speaking, one large dam is equivalent to two small dams. This is true only if the water of the lower dam reaches the base of the upper small dam. Then the equivalent volume of water goes through both the pair of small dams and the large dam, and the sum of the heads of the two small dams equals the head of the large dam, so the generated electricity is the same.
What is a difference between a river and a dam?
A weir is also called a low-head dam, so weirs are type of dam. Typically non-regulated so excess water simply flows over the top.A dam is large (or very large), like the Hoover Dam. A weir is very much smaller and you'd be more likely to find one across a stream than a river.
What is a difference between the great wall of china and the three gorges dam?
they have different enviernments
How will you measure the height of a dam?
difference between the high flood level and stream bed datum.
Can many small dams replace a large dam?
It depends on the physical features on the river. In some places it may be possible to do so. However is is far more economical to build a large dam than several smaller ones.
What is the difference between goat dams does nannies?
Does and nannies both refer to female goats in general. Dam is the equivalent of mother, a kid goat will have both a dam and a sire.
What is a large weir?
dam
What is the name of the large dam in central Washington?
Grand Coulee Dam
