Why is the flood line considered in planned settlement along a river?
Answer and explanation
Correct answer: Because it shows the possible water spread area
A flood line marks, or helps estimate, the area that may be reached by floodwater under a particular flood level or probability. Planned settlements consider it so that houses, roads, public services, and other valuable structures are not placed in areas likely to be inundated. Therefore, option C is correct. Using flood-line information can reduce danger to people and limit damage to property, although it cannot remove all flood risk.
The other choices are unrelated. A flood line does not measure sea depth, determine the age of mountains, or turn a river into minerals. Its purpose is connected with water spread during floods. A planner can compare the line with proposed building locations and maintain safer setbacks or restrict construction in high-risk zones. Thus the phrase “possible water spread area” gives the direct reason for considering a flood line, making C the correct answer.
Frequently asked questions
What is the correct answer to this question?
Because it shows the possible water spread area
Why is this the correct answer?
A flood line marks, or helps estimate, the area that may be reached by floodwater under a particular flood level or probability. Planned settlements consider it so that houses, roads, public services, and other valuable structures are not placed in areas likely to be inundated. Therefore, option C is correct. Using flood-line information can reduce danger to people and limit damage to property, although it cannot remove all flood risk.
The other choices are unrelated. A flood line does not measure sea depth, determine the age of mountains, or turn a river into minerals. Its purpose is connected with water spread during floods. A planner can compare the line with proposed building locations and maintain safer setbacks or restrict construction in high-risk zones. Thus the phrase “possible water spread area” gives the direct reason for considering a flood line, making C the correct answer.
Which subject and chapter does this question cover?
This is a Class 9 Geography question. Chapter: Drainage. Topic: Role of Rivers.
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