Question

3. Describe how can dams, water harvesting and prevention of water pollution help in
conservation of water.​

Answer 1

Rainwater harvesting is the accumulation and storage of rainwater for reuse on-site than allowing it to run off. ... It is essential to stop the decline in groundwater levels, arrest sea-water ingress, it prevent sea-water from moving landward, and conserve surface water run-off during the rainy season.

Answer 2

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• It minimizes the impacts of flooding by funneling the off water into large tanks for recycling and helps reduce the load placed upon drainage systems.

• No land is wasted for storage purpose and no population displacement is implicated therefore, groundwater is not directly exposed to evaporation and pollution.