A dam and reservoir can also change natural water temperatures, water chemistry, river flow characteristics, and silt loads. All of these changes can affect the ecology and the physical characteristics of the river. These changes may have negative effects on native plants and on animals in and around the river.
What are the environmental benefits of dams?
Environmental Protection: Some dams help protect the environment by trapping hazardous materials in water and capturing sediment that could contain harmful or toxic substances. Some dams also have mine tailing impoundments, which help facilitate the processing of minerals in an environmentally friendly way.
What are the benefits of building a dam?
The purpose of a dam is to impound (store) water, wastewater or liquid borne materials for any of several reasons, such as flood control, human water supply, irrigation, livestock water supply, energy generation, containment of mine tailings, recreation, or pollution control.
What are the positive and negative effects of dams?
Dams store water, provide renewable energy and prevent floods. Unfortunately, they also worsen the impact of climate change. They release greenhouse gases, destroy carbon sinks in wetlands and oceans, deprive ecosystems of nutrients, destroy habitats, increase sea levels, waste water and displace poor communities.
What is one way people positively affect water resources?
How are local communities affected by the construction of dams?
The construction of high-rise dams causes several problems including deforestation, loss of biodiversity and displacement of poor tribals. The large reservoirs of water formed by the dams destroy plants and animals in the area which get submerged underwater.