In some tropical countries, these months have entered the rainy season. But in other countries, the rain never falls, threatening drought.
In some countries that have high rainfall, ironically drought continues in various regions. It is very unfortunate, considering that there are still many ways that can be done with this high rainfall. Water Harvesting is the right way to collect water by collecting it from rainwater which is used for agricultural production and for other household needs. Water harvesting is the act of collecting rainwater and surface runoff to be discharged into temporary and / or permanent shelters that can be used at any time to irrigate cultivated plants if needed. In addition to providing a source of irrigation water in the dry season, water harvesting technology can also function to reduce flooding in the rainy season. Rainwater harvesting and surface runoff are handled to (1) reduce the volume of surface runoff and increase groundwater reserves; (2) increasing the availability of plant water, especially during the dry season; and (3) reducing surface runoff velocity so that erosion and bearing capacity decrease. Water harvesting can be done on a micro or macro scale. Macro scale, for example, makes a dam that is used by many people. Meanwhile, the micro scale can be carried out and utilized by a small group of people or usually one family in one house.
In its use for agricultural production, water harvesting has several advantages, including increasing agricultural production. Water harvesting is also an effort to conserve soil, and also to save water. Rainwater harvesting can replenish groundwater so that it can be used as spare parts during the dry season. However, water harvesting also has limitations when applied, such as: Water harvesting is strongly influenced by climate, so the quality and quantity are unstable. Because water harvesters are still relatively new, there are still many inexperienced resources. Harvesting water also risks causing conflict, both between communities and with the government.
In its implementation, it will indeed cause risks, but it is not impossible that in a few moments it will be better in management and implementation. Harvesting rainwater is one of the simplest ways to store and store water, because it is not impossible that one day we will be short of water and rain is the only source of water that nature has.