Surface irrigation is a method of watering crops where water flows over the soil surface to reach the plants. This technique relies on gravity to distribute water, allowing it to soak into the ground. It is commonly used in agriculture for its simplicity and low cost. There are several types of surface irrigation, including furrow, broadacre, and border irrigation. Each type has its own design and application, depending on the landscape and crop needs. This method can be efficient in areas with adequate water supply but may require careful management to prevent water loss and soil erosion.