Q. Consider the following statements:

1. A dam is a barrier across flowing water that obstructs, directs or retards the flow.
2. Dams often create reservoir, lake or impoundment.
3. Dam refers to the reservoir rather than the structure.

Which of the above is / are correct?
Answer: All of the above
Notes: A dam is a barrier across flowing water that obstructs, directs or retards the flow, often creating a reservoir, lake or impoundment. "Dam" refers to the reservoir rather than the structure. Most dams have a section called a spillway or weir over which or through which it is intended that water will flow either intermittently or continuously.