(i) Rainwater harvesting is the process of increasing the recharge of groundwater by capturing and storing rainwater locally in sub-surface water reservoirs.
(ii) The main objectives of rainwater harvesting are the following:
- Meeting the ever increasing demand for water.
- Reducing the run-off which chokes drains.
- Avoiding the flooding of roads.
- Augmenting the groundwater storage and raise the water table.
- Reducing groundwater pollution.
- Improving the quality of groundwater.
- Reducing the soil erosion.
- Supplementing domestic water requirement during summer and drought.