Analysis of the availability of water resources using the Thornthwaite-Matter water balance method with dual reservoir development in residential locations in Tangerang regency

Many settlements still use groundwater sources and this can cause a decrease in the ground water level. There is a need for alternative sources of water to meet the water needs of settlements. The purpose of this study was to determine the magnitude of the surplus or deficit of water in Tangerang Regency, Indonesia and also to determine the amount of water demand for the population in the region. Therefore, it is necessary to analyze the planning of dual reservoirs in providing groundwater for residential areas in overcoming the problem of drought in the dry season. This research method uses Thornthwaite-Matter water balance analysis and multiple reservoir design planning. The results showed that the estimated water surplus occurred from January to April with a magnitude between 25.07 mm to 186.09 mm. The water deficit occurs from July to October with a magnitude between 127 mm to 219 mm. The pattern of water consumption in the household is used as a reference for making reservoirs to maintain the availability of air in residential areas. The dual reservoir will be equipped with sensors that can help determine the water level so that it is easy to detect water needs and can prevent water wastage.

ANALISIS POLA OPERASI WADUK SANGIRAN

<p>Dam is a reservoir that is needed to save water so that it can be used at the time needed both for irrigation, hydropower, and tourism. One of the Functional Dam in Indonesia is the Sangiran Dam. Sangiran Dam is located in Sumber Bening Village, Bringin District, Ngawi Regency, East Java Province. The Sangiran Dam is equipped with an overflow ogee crest type overflow building with side channels. Sangiran Dam gate type is slide gate with automatic operation using electric generator. The reservoir, which was operated starting in 2000, is designed to meet the needs of a plantation area of 1535 ha. However, in the operation that is needed in meeting the needs of irrigation air needs to be done in research the current operating patterns of the operating patterns that have been designed at the time of the reservoir design to compile an operating pattern that can meet water needs, at this time, looking for a relation between the elevation of reservoir water levels with an outflow discharge coming out of the reservoir. Based on the results of the analysis conducted on the current operating patterns are not in accordance with the pattern of initial design operations with an average deviation of 51.78% per year. This research is being carried out to analyze the optimal operating patterns of the Sangiran Dam and / or possible operating patterns in meeting water needs in the following years.</p>

Eksplorasi Potensi Alami Waduk Menuju Rancangan Wisata Desa Purwosekar Tajinan Kabupaten Malang

The maximum empowerment of village potential is one way to improve the economy. Purwosekar Village, Tajinan Subdistrict, Malang Regency, has the potential of natural and human resources that can be developed. Ownership of a reservoir that was previously neglected, a lot of garbage, sediment, and wild plants will be a very valuable asset if conceptualized water tourism. Moreover, the village community has many skills and handmade products, which are still confused about the marketing media. Thus it is necessary to plan and conceptualize steps to empower the reservoir to become a tourist site which will later be a means of promoting processed products for villagers. The activities carried out are aimed at 1) providing design designs using the SketchUp Pro 3D Design Program for tourism reservoir concepts 2). Provide stages of activities to develop the potential of village tourism village design. This community service activity has an output target in the form of a tourism reservoir design. So that through this service activities can help disseminate the promotion of products created by the village community

Benefits and limits of season-ahead forecasts for hydropower production: a global analysis

&lt;p&gt;Season-ahead hydro-climatological forecasts are a useful source of information for hydropower operators: at the onset of a flooding season, for example, predictive information on the timing and magnitude of the inflow volume can help operators schedule the release trajectory, decide on the amount of volume to store, and therefore maximize hydropower production. Intuitively, the forecast value varies not only with predictive accuracy, or skill, but also with the reservoir design specifications. Characterizing and explaining the relationship between skill, design specifications, and value is thus a necessary step towards a more informed and effective use of seasonal forecasts. To investigate the nature of this relationship, we modeled 1,593 hydropower reservoirs, for which we developed 3-month ahead monthly inflow forecasts&amp;#8212;based on a principal component linear regression model. Our results show that more than half of the dams could benefit from forecasts, averaging a 6.56% annual increase in hydropower production. We also found that forecast value is largely controlled by reservoir design specifications; specifically, we found that reservoirs with small storage capacity (relative to inflow) and large inflow volumes (relative to turbine capacity) have better chances of benefitting from accurate forecasts. With this information, we classify and map each dam on the basis of its potential to increase hydropower production.&lt;/p&gt;

Hydrological Accurate Plan as the Main Supporting of Pejok Reservoir Design in Bojonegoro Regency, East Java Province of Indonesia

This study intends to carry out the hydrological analysis accurately for supporting the design of Pejok Reservoir. Pejok Reservoir is located in Bojonegoro Regency, East Java Province of Indonesia. Without the accurate plan of hydrology, it will cause some troubles and damages after a reservoir has been operated moreover Pejok is as an ungauged basin. The methodology consists of the design flood analysis and plan, flood routing through the reservoir, dependable discharge analysis and plan, and the irrigation water requirement analysis and plan. Result is hoped can support the accurate design of Pejok Reservoir, so there are not some troubles and damages after the reservoir has been operated for a long time