Question

the method used for rainwater harvesting in
1.flood prone areas
2. in hilly and mountainous regions
3. in desert areas

Answer 1

in hilly and mountanious regions

Answer 2

The method used for rainwater harvesting in hilly and mountainous regions. (Option 2)

• The water harvesting systems are mainly used for arranging the necessary water for the agricultural production.

• Now,in the mountain regions, there are very less amount of water bodies like lake, river etc. And that's why the dependence on the rainwater is highly observed in the mountain regions.

• And,the other two regions mentioned in the question don't need the rainwater harvesting system because these areas have alternative efficient sources of water.