Showing results for: hydropower dam Articles
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Project - U.S. Bureau of Reclamation
The United States Bureau of Reclamation’s Underwater Investigations Dive Team (an agency of the U.S. Department of the Interior) is responsible for all underwater investigation for the Bureau’s hydroelectric dams. Under pressure to work faster, safer, and more efficiently, they investigated ROV technology to replace human diving when possible. Unlike human divers, ROVs can work in ...
By VideoRay LLC
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Greenhouse Gas Emissions from Hydroelectric Dams: Reply to Rosa Et al
Ever since my first estimate indicating high emissions of greenhouse gases from Amazonian dams (Fearnside, 1995), Luis Pinguelli Rosa and coworkers have effectively made a career of trying to prove me wrong. However, the longer this debate goes on and the more information that becomes available, the greater the impacts are found to be. The latest attack (Rosa et al., 2005) serves to illustrate a ...
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Economics of transboundary water: an evaluation of a glacier and snowpack-dependent river basin of the Hindu Kush Himalayan region
The Himalayan rivers are recognized as a reliable source of water supply in the countries of the Hindu Kush Himalayan (HKH) region. Increasing need for food and energy for the growing population of the HKH region has stimulated water harvesting from the transboundary rivers and triggered water conflict, environmental degradation and socio-economic turmoil among the riparian nations. Teesta is ...
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Some critical environmental issues of the energy discussions
There are two complementary approaches to studying the environmental effects of fuel use and energy conversion. The first is to be completely systematic and to follow through each technology in great detail, and itemise each impact, whether large or small. The second, followed here, is to pick out those items that either dominate the risk or impact, or dominate the public perception thereof, and ...
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Hydrometric network design using dual entropy multi-objective optimization in the Ottawa River Basin
Water resources managers commonly rely on information collected by hydrometric networks without clear knowledge of their efficiency. Optimal water monitoring networks are still scarce especially in the Canadian context. Herein, a dual entropy multi-objective optimization (DEMO) method uses information theory to identify locations where the addition of a hydrometric station would optimally ...
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Continuous Level Measurement: Magnets To Float Your Boat
Let’s be honest with each other. (It’s ok, we’re all friends here, right?) When you think of continuous liquid level measurement, magnetic float level sensors aren’t the first thing you think of. And when you do think of them, your first instinct isn’t “Hey! That’s the perfect sensor technology for this job!” It’s ok, you’re not alone. ...
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Potential impacts on hydrology and hydropower production under climate warming of the Sierra Nevada
Watersheds of the Cosumnes, American, Bear and Yuba (CABY) Rivers in the Sierra Nevada, California, are managed with a complex network of reservoirs, dams, hydropower plants and water conveyances. While water transfers are based on priorities among competing demands, hydropower generation is licensed by the Federal Energy Regulatory Commission (FERC) and regulated by federal and state laws and ...
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Manic 5 and Manic 5 PA (Hydro Québec), Quebec case study
Part of an hydroelectric complex counting four dams, Manic 5 and Manis 5 PA are two power houses installed in the valley of the Manicouagan river, north of Québec. Unveiled in 1970, this plant represents the higher multiple-arch and buttress dam in the world. For the Manic 5 and Manic 5 PA sanitary water treatment, Hydro-Québec mandated the Groupe-conseil TDA to find a compact ...
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Drought hits capital of Philippines
Manila, with a population that has doubled since 1985, has no fallback as monsoon fails to materialize On July 11, the reservoir of the hydroelectric Angat Dam, which supplies Manila and other nearby areas with water, reached the critically low level of 160 m. Its normal minimum operating level is 180 m, and its normal high water level is 210 m. In the early part of March, water taps began to ...
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SRS Crisafulli Explores Dredging and Hydropower
SRS Crisafulli Explores Dredging and Hydropower Energy production and consumption worldwide is influenced by many factors. Resource availability, economic activity, population growth and environmental regulations, for instance, all affect the types of energy production that may be available to consumers. One of the cheapest methods of energy production is hydroelectric power. Last ...
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Why is Europe failing to take the energy-water connection seriously?
Concerns are intensifying in the US about the troubling interdependence of the economy'swater and energy needs. In particular, the vast quantities of water (about 40% of national water withdrawals) needed for cooling US power plants are making headlines, and proposals to build thirsty new generation plants in drought-stricken states like Texas are under heavy scrutiny. Hydropower is also under ...
By Ceres
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If Our Planet Had a Say, Here’s Where Future Roads Would Go
A new global ‘roadmap’ shows where to put roads for maximum benefit and least cost to the Earth. “The best thing you could do for the Amazon is to blow up all the roads.” These might sound like the words of an eco-terrorist, but it’s actually a direct quote from Eneas Salati, a forest climatologist and one of Brazil’s most respected scientists. Many ...
By Ensia
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SRS Crisafulli Survey: Silty Rivers of the World
SRS Crisafulli Survey: Silty Rivers of the World In Steven Solomon's book Water, The Epic Struggle for Wealth, Power and Civilization, he lists some of the world's siltiest rivers. Which river do you think is the most silty? Let's take a closer look at 5 silty rivers. A quick search on Wikipedia revealed the following data. The Colorado River The Colorado River is the principal river of ...
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U.S. West Gets Tough on Water Waste
As water becomes scarcer, solutions like water reuse and desalination are becoming more relevant In the western United States, feats of civil engineering in the 20th century diverted river flows and snowmelt to make life in many naturally arid areas more inviting. Lush lawns and vegetation began to flourish in desert cities. Populations grew with the newly attractive real estate and kept ...
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Impact of Dam Operations on Hyporheic Exchange in Riparian Zone of Regulated River
Abstract: Dam operations commonly cause large, frequent fluctuations in river stage, which persist for long distances downstream. The stage fluctuations force river water into and out of the hanks, defining lateral hyporheic exchange paths. To evaluate the penetration distance and rates ot dam-induced hyporheic exchange, we monitored water-table elevation, temperature. and specific conductivity ...
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Comparison of Dissolved Oxygen Sensors
What is Dissolved Oxygen? Dissolved oxygen is a measure of how many O2 molecules are present in a liquid (most often water) at any given time. It is incredibly important because oxygen sustains life in bodies of water and reduced dissolved oxygen levels can act as a warning for events that destroy ecosystems, such as algae blooms. The units of measurement are typically mg/L or on a scale of ...
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The Secret to Carbon Neutrality is in your Dumpster
According to TheClimateGroup.org, the transportation sector is the fastest-growing contributor to climate change, accounting for 23% of global energy-related greenhouse gas (GHG) emissions. Efforts to achieve carbon neutrality are everywhere you look. Between countries announcing ambitious goals for the next decade, and some of the world’s largest companies (including Ikea, Daimler, ...
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Monitoring Hydroelectric Dam Sumps - Case study
The Situation Hydroelectric dams produce electric power by harnessing the force of the water flowing through the dam. There are numerous sources for oil spillage: The hydroelectric turbines are lubricated by lubrication oils. The very large water control valves are normally hydraulic powered and are lubricated with various greases and oils. Vehicles including fork lifts, trucks, etc., can ...
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Mekong Delta Faces Saline Intrusion Crisis
Longer periods of seawater intrusion in the river’s delta system threatens a collapse of Vietnam’s food chain The countless boats, houses, and markets on the Mekong River delta’s complex lattice of streams, rivers, and canals are home to millions of inhabitants, who all depend on the health of the delta. The 65,000-km2 region sustains 60% of Vietnam’s population and is ...
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Scaling-up investments in natural infrastructure
Wetlands occur wherever water meets land. These deltas, marshes, rivers, lakes and watersheds are the water systems that link the natural world and human societies, and make it possible to clean, store and provide water to grow food and run businesses. As we prepare to participate in the 7th World Water Forum in South Korea, I want to bring attention to the need to scale up investments in ...
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