Can you explain how rahat irrigation works?

Rahat irrigation, also known as "flood irrigation," involves the controlled flooding of agricultural fields to ensure that crops receive sufficient water. Water is typically diverted from nearby sources, such as rivers or canals, and is allowed to flow over the fields, soaking into the soil. This method is particularly effective in areas with flat terrain and can help maintain soil moisture levels. However, it requires careful management to prevent waterlogging and ensure efficient use of water resources.