What is the main objective of rain water harvesting ?

Explanation

**Step-by-Step Solution:**

1. **Understanding Rainwater Harvesting:**
- Rainwater harvesting is a technique used to collect and store rainwater for future use.

2. **Identifying the Main Objective:**
- The primary goal of rainwater harvesting is to recharge the underground water table. This means that the collected rainwater is directed into the ground to replenish the water that is stored underground.

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