Dams of India

The article “Down go the dams” by Jane C.Marks aim to provide an informative view on the current pending issue on Dams. The article starts out my mentioning the important nature of dams in our society. For example, Jane C.Marks states that today about 800,000 dams operate worldwide as well as the fact that most were built in the past century, primarily after World War II. Furthermore, the author lays down informative facts about dams such as the fact that dams control flooding and their reservoirs provide a reliable supply of water for irrigation, drinking and recreation which are all very important to society. In an economic standpoint, although it is very high maintenance dams provide jobs for people. The

The Grand Coulee Dam, located in Eastern Washington, was one of controversy, risk, and a point of no return. While the water captured made the desert area blossom in agriculture and it powered some large cities, it created a sense of accomplishment, that humans can control Mother Nature. While many people were very excited for this new construction – which gives power and resources - at the time, some thought it should not be allowed, they are not proud of containing the Columbia River. In this analysis, I am going to focus on the economic and social effects that the Grand Coulee Dam created in its build.

The Three Gorges Dam is an unfinished project which will be the largest dam ever constructed on the planet Earth. It is situated in China on the third largest river in the world – the Yangtze. The dam has been debated over since the 1919 and is still a hot topic of debate because of its many pros and cons. In 1994 construction began on the dam, and it is expected to be finished by the year 2009. The massive dimensions of the dam are mind boggling and its functions – if the dam actually works – are truly remarkable; however, with such a large structure also comes difficulties, sacrifices, and cynics. The goal of this essay is to lend an understanding of the dam itself, the prospective benefits of

As the days are becoming hotter, and as our water supply is decreasing, it is becoming more relevant than ever before to increase the water inventory for the agricultural industry. With the damming of the Hetchy-Hetchy river, it will limit our already low supply and output of crop, which is the lead export of sustenance in the nation.

Dam projects can serve many purposes. They compensate for varying amounts of water that nature may send down a river at a given time, or they may serve as a resource to generate hydropower for the local population. The construction of these complicated feats of engineering is an expensive, time consuming task. For whatever reason a dam is built, it will almost always pay for itself in the energy it produces or

The main purpose of the dam removal project is for the restoration of native anadromous fisheries and the Elwha River ecosystem. The cost of the dam removal projects would be about $30 million, and the Secretary would pay to local industrial consumer and the dam owner (Elwha River Ecosystem and Fisheries Restoration Act,

Hydroelectric dams as energy sources have many advantages; they provide a renewable energy source, it can take the place of fossil fuel usages, and while being built dams can significantly help jobs in the development industry (Perlman). However, these dams are extremely costly, not just economically but environmentally and socially as well. These costs can be demonstrated by looking at the consequences of other dams. Three Gorges in China: release of methane gases, deforestation, water pollution, ecosystem disruption. Glen Canyon Dam: sedimentation, endangerment and extinction of species endemic to the area, poor water quality, crippling of ecosystems downstream—and these are just the environmental impacts! All of these

National Geographic’s American science journalist, Michelle Nijhuis published an article on August 27th, 2014 discussing the process of the removal of the Glines Canyon Dam on the Elwha River in Washington State. The removal of the Glines Canyon dam is the largest dam removal that has ever taken place thus far. The removal of the dam began in late 2011, 3 years later after the removal of the dam was complete the salmon began again migrating down river, trees and vegetation began to sprout in the reservoir bed, and sediment that was once trapped behind the dams walls are now rebuilding beaches at Elwha’s outlet to the sea. In the last 5 miles of the 45 mile Elwha river, where Olympic National Park now lies, the salmon run were world famous and

It allows farmers to grow and water their produce such as watermelon and cantaloupe. It also allows for storage of water in reservoirs for the use on fields to irrigate. There are five dams and reservoirs in the project. The Ruedi Dam and Reservoir, is located on the western slope; the other four are on the eastern slope. Pueblo Dam and Reservoir is the largest reservoir in the project. It is located on the Arkansas river.

The purpose of this report is to geologically evaluate the potential hazards for flooding in Hazard City. This report will include a detailed historic and extrapolated Stream Gauge Data Worksheet, as well as a graph of the Discharge Frequency Curve expected on Clearwater River. The report will provide Hazard city with my scientific analysis, conclusions, and provide recommendations concerning potential flood damages.

Many countries are also highly dependent on water that originates outside their borders; the water diversion provided by dams for countries that are downstream exacerbates an already serious problem. The diversion of river systems is an area of international concern, the nature and extent of such interdependency is already extensive: 145 countries share over 261 international river basin. As demand increases, and as indigenous sources of water become fully utilized or exhausted, the only alternatives are likely to be international (Dolatyar, 2006). Ironically, the very solution of one country's scarcity, plunges another into water shortage, this is the reason why water security is one of the most crucial foreign policy considerations of a globally connected economic and political atmosphere.

INTRODUCTION: Water assets building is growing massively today. Dams have the most vital part in using water assets. They were developed taxing year before increasing present data about hydrology and hydro mechanics. All through the historical backdrop of the world, dams have been utilized effectively as a part of gathering, putting away and overseeing water expected to manage human advancement. Dams have a lot of positive and negative impacts on the earth. Their advantages like controlling stream administration, subsequently forestalling surges, getting local and water system water from put away water and creating vitality from hydro control. While dam give noteworthy advantage to our general public, their effect on the encompassing incorporates resettlement and migration, financial effect, natural concerns, sedimentation issue, security angles and so on. Notwithstanding their vital social and natural advantages, it is vital to minimize the negative impacts of the hoover dam on the earth with respect to feasible advancement.

The relevance is given as we need an adequate material to build the dam as well as enough water to achieve a water level and finally to maintain that level. It also should be thought about a solution for the silt coming down the river in order to keep on getting a clear flush.

This development was envisioned as part of the Narmada Valley Development Project, also known as the “Narmada Project”, the scope of which included the provisioning of thirty large dams, 135 medium dams, and 3000 small dams. Of these, the Sardar Sarovar is one of the larger and most publicly troubling projects. The Indian government’s many claims about this dam have included that it would irrigate roughly 1.8 million hectares of land in the state of Gujarat, irrigate 73,000 hectares of land in the nearby state Rajasthan, and provide drinkable water to roughly 8000 Gujarati villages and 125 urban centers. (Narula, 2008)

All of these projects are designed to have low environ- mental impacts and be sustainable and easy to maintain. Since they are mini-hydro projects, large head heights (and thus large dams) are not required [9]. Most of these 6 turbine projects favor weirs over dams which cause much less damage to both the river and the surround- ing wildlife and fish population. An example of one of these small, low impact dams can be seen in FIG. 1. The design of these system also includes many failsafes to help aid in environmental protection. Like many small hydro plants, CRELUZ’s projects include fish passes and flood controls [6].