How do check-dams contribute to groundwater recharge and sustainable irrigation practices?By preventing soil erosion.By stopping rainwater flow and allowing it to percolate into the ground.By creating a habitat for aquatic animals.By promoting the growth of water-intensive crops.

Check-dams play a crucial role in groundwater recharge and sustainable irrigation practices. Here's how:

1. Preventing Soil Erosion: Check-dams are built across the direction of water flow on slopes or hilly areas. They slow down the speed of water, reducing its erosive power. This helps in preventing soil erosion, which is essential for maintaining the fertility of the land and promoting sustainable agriculture.

2. Promoting Groundwater Recharge: Check-dams stop the flow of rainwater, especially during the monsoon season, and allow it to percolate into the ground. This process helps in recharging the groundwater levels. Increased groundwater levels ensure a steady supply of water for irrigation, even in dry seasons.

3. Creating a Habitat for Aquatic Animals: By slowing down the water flow, check-dams create a suitable environment for the survival and growth of various aquatic animals. This biodiversity can contribute to a balanced ecosystem, which is beneficial for sustainable farming practices.

4. Promoting the Growth of Water-Intensive Crops: With a steady supply of water from recharged groundwater and the dam itself, farmers can grow water-intensive crops. This can lead to increased agricultural productivity and income.

Therefore, check-dams contribute significantly to sustainable irrigation practices and groundwater recharge.