The impact of construction o dams
Answers
The alteration of a river's flow and sediment transport downstream of a dam often causes the greatest sustained environmental impacts. Life in and around a river evolves and is conditioned on the timing and quantities of river flow. ... A dam also holds back sediments that would naturally replenish downstream ecosystems.
While there are direct environment impacts related with the construction of the dam for examples, dust, erosion, borrow and the disposal problems. The greatest impacts result from the impoundment of water, flooding of land to form the dam and alteration of water flow downstream.
Answer:
Building a dam might have an impact on the biodiversity of bacteria, benthos, plankton, fish, plants, and birds.
Explanation:
Some of the impacts of the construction of dams are as below:
- The soil microorganisms in the downstream lake wetlands rose as a result of the construction of the dam, which decreased the water fungal biomass and richness in reservoirs and downstream reaches.
- By flooding the area in which they reside in order to create the reservoirs above the dams, between 40 and 80 million people have been forcibly displaced.
- The alteration of the river flow below dams has also impacted the lives and livelihoods of even more people.
- Increases in water-borne diseases like typhus, typhoid fever, malaria, and cholera may be brought on by dams.
- Dams have a significant impact on the region's social, cultural, and economic structure.
- Forcing individuals to migrate, particularly when their homes and lands are still underwater, has a detrimental psychological impact.
Thus, due to the significant cost of dam construction, the government must make sure that stringent regulations are adhered to and a very high standard is upheld.