Part 1: 30 per cent of 10-rai piece of land (about 3 rai or 0.48 ha) is used for a reservoir. This should be dug to a depth of four metres for a capacity of 19,000 cubic metres of water collected from rainfall, which will be enough to irrigate the crops throughout the year. On his many visits to his people in the rural areas, the King has always stressed the importance of water to agriculture, especially to the rice crop which thrives on water. Since building large reservoirs is becoming more and more difficult due to the expanding population and the decrease in the amount of land available. The King advocates the building of household reservoirs. These, apart from providing water for the crops, can also be used to raise fish and aquatic plants, thus adding to the household income.