Apr 10, 2025 · dam, structure built across a stream, a river, or an estuary to retain water. Dams are built to provide water for human consumption, for irrigating arid and semiarid lands, or for …

At 560 m (1,840 ft) high, it is the tallest dam in the world, including both natural and man-made dams. A more recent example would be the creation of Attabad Lake by a landslide on …

Jun 21, 2024 · A dam is a structure built across a stream or river to hold water back. Dams can be used to store water, control flooding, and generate electricity.

Hoover Dam is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the U.S. states of Nevada and Arizona. Constructed between 1931 and 1936, …

Dams have depleted fisheries, degraded river ecosystems, and altered recreational opportunities on nearly all of our nation’s rivers. Today, many dams that were once at the epicenter of a …

Feb 20, 2024 · More than half a million dams block our nation’s rivers, and many are nearly invisible. Underneath their murky waters, they halt the free flow and exchange of fish, nutrients …

The Three Gorges Dam (simplified Chinese: 三峡大坝; traditional Chinese: 三峽大壩; pinyin: Sānxiá Dàbà) is a hydroelectric gravity dam that spans the Yangtze River near Sandouping in …

Feb 3, 2020 · Dams impede the flow of essential nutrients, including carbon, phosphorus, nitrogen and silicon, along river networks, leading to enhanced nutrient transformation and elimination.

Water withdrawn may be discharged into the river below the dam, run through generators to provide hydroelectric power, or used for irrigation. Dam outlets usually consist of pipes, box …

Dams operate in a range of ways depending on their intended purpose. Two common types of dams are run-of-the-river dams and detention or storage dams. Run-of-river dams have low …