Sediment trapped behind dams makes them 'hot spots' for greenhouse gas emissions Date: July 31, 2013 Source: American Chemical Society Summary: With the "green" reputation of large hydroelectric ...

Sediment, millions of tons of it, has flowed down the 440-mile Susquehanna River for more than 80 years and massed at the dam. And now a reservoir built to hold it is filling up.

Thousands of the world's large dams are so clogged with sediment that they risk losing more than a quarter of their storage capacity by 2050, UN researchers said Wednesday, warning of the threat ...

Hydroelectric dams may be known as a relatively clean and low-cost energy source, but a new study says that the sediment trapped behind them makes them hot spots for greenhouse gas emissions.

However, he and some of his fellow researchers recently penned a new study, suggesting that nearly 50,000 large dams—defined as being 15 m tall or more or above 5 meters high and blocking more ...

The giant sediment reservoirs at Conowingo Hydroelectric Dam — glorified sand buckets that collect millions of tons of grainy pollution near where the Susquehanna River enters the Chesapeake Bay ...

Sediment build-up can lead to safety and efficacy issues. The USGS created a new image to give operators a way to quantify a variety of changes in the future.

You are able to gift 5 more articles this month. Anyone can access the link you share with no account required. Learn more. An environmental analysis of sediments behind Yarmouth’s Bridge Street ...

The methane comes from organic matter in the sediments that accumulate behind dams. That knowledge led to questions about hydroelectric power's image as a green and nonpolluting energy source.