Abstract
The availability of raw water is a major requirement to increase agricultural production, especially rice, as well as for domestic purposes for the community. One source of water is rivers used by communities to fill daily needs for both agricultural and other needs. This research is a survey research, conducted in Puspamukti Village, Subdistrict Cigalontang, Tasikmalaya Regency. With The purpose of knowing the feasibility of reservoir development. The source of water used at the research locus is from the river and several springs utilized by the community to irrigate the agricultural area of 750 ha. Based on topographical conditions, the area has a potential to be made into a reservoir that could be as a supply for domestic agricultural and water areas. The method of calculating the average rainfall of 2 rain posts is done by various return period, the calculation of dependable flow and water balance, and the design flood discharge. The watershed area is 6.4 km2. The maximum dependable flow is 0, 6 m3/sec. Based on the dependable flow, area that can be irrigated is only about 440 ha., and the domestic needs is about 9,1 lt/sec. The reservoir development at the research locus is considered less feasible.
Highlights
Indonesia is known as a country that is rich in natural resources, this is because Indonesia is one of the countries that is passed by the equator, which includes it as a tropical country
In 1984 Indonesia had made self-sufficiency in rice farmings that were marked with donations to needed countries
The watershed area and land use conditions are an important parameter in calculating the discharge, the area of watershed is calculated based on topographic map, the measured watershed area, which is around 6.4 km2 [1]
Summary
Indonesia is known as a country that is rich in natural resources, this is because Indonesia is one of the countries that is passed by the equator, which includes it as a tropical country. Indonesia has two climates so the agriculture sector becomes the prima donna of Indonesia‘s population. In 1984 Indonesia had made self-sufficiency in rice farmings that were marked with donations to needed countries. Indonesia is a rice producing country, it still needs to import rice from other countries. This is due to the increase of population, the change of function of wetland in productive areas, the increase of rice consumption per capita per year, and the decrease of rice production volume. In addition to meeting the shortage of domestic needs
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