Integrated Water Resources Management in the Bukian irrigation Area at Badung Regency

Andayani, Ketut Wiwin and Wardana, I G N K Mahesa Adi and Triadi, I Nyoman Sedana and Winaya, I Nyoman Anom Purwa and Sutapa, I Ketut (2023) Integrated Water Resources Management in the Bukian irrigation Area at Badung Regency. International research journal of engineering, IT & scientific research, 9 (4). pp. 193-211. ISSN 2454-2261

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Abstract

Management of Water Resources to meet the needs of living things is very important. Management of Water Resources that are not integrated will cause various problems, including drought, conflicts of interest between water users. The Bukian Irrigation Area is an irrigation area that utilizes surface water for its agricultural activities. Currently, the Bukian Irrigation Area obtains irrigation water from the Bukian I weir and Bukian II weir as a supply weir to increase the need for water discharge required in the irrigation area. In the utilization of surface water that is used to meet irrigation needs at this time, less attention is paid to a good water management system, such as a lack of control over water use. Water management can be carried out properly if the condition of the water balance in the system is known. Related to this, additional discharge and integrated water management are needed to avoid conflicts of interest between water users. The method in this study is a quantitative analysis with the mainstay discharge variable in the Bukian I and II weirs and irrigation water demand based on the existing cropping pattern. This research gives the result that the potential availability of water in the Bukian I and Bukian II weirs has a fluctuating magnitude in each semi-monthly period, where the maximum discharge is 0.458 m3/second and 0.130 m3/second which occurs in the February I period, the minimum discharge respectively each of 0.051 m3/second occurred in November I and 0.050 m3/second in September II and October II. The potential of each average discharge is 0.197 m3/second and 0.079 m3/second where all of them are analyzed with a reliability level of 80%. The need for irrigation water is following the existing cropping pattern in D.I. Bukian is 1.57 liters / second / hectare. The condition of the water balance in the Bukian II Dam without any supplementation indicates a water deficit condition and after adding the discharge through the supplementation from the Bukian I Dam, the result is that the available discharge increases significantly and the water balance indicates a water surplus condition. To obtain a good water resources management system in the Bukian Irrigation Area, arrangements must be made regarding the time and amount of water to be supplied to the Bukian II

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