Check Dam Definition and Function
Check dams are small artificial barriers constructed across water channels, such as gullies or small streams, primarily to reduce water flow velocity. This action helps in minimizing soil erosion and facilitates groundwater recharge by retaining water.
They are typically built using locally available materials like stones, bricks, or concrete, or can be constructed from earthen material.
Considering the options provided:
- Option 1 accurately describes check dams as "Earthen or concrete structures across flooded gullies". This aligns with their construction and placement.
- Option 2 is incorrect as check dams serve broader purposes than just industrial water supply.
- Option 3 describes geological landforms, not artificial structures.
- Option 4 describes dwellings, unrelated to check dams.
Therefore, the correct definition highlights their nature as structures built across gullies.
Important Questions from Environment Problems
The major contributor to global warming is _____.
Which of the following does not deplete the water table at a place?
The Red Data Book gives an account of-
Which of the following active volcano in North Eastern Tanzania is showing imminent signs of eruption?
Pankaj wants to suggest his students as to how an individual can contribute in the best possible way to wards environmental protection. His best suggestion would be:
