Garuda - Garba Rujukan Digital

Rahmandani, Dadan

Balai Penelitian dan Pengembangan Irigasi

Author-ID : 791443

Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Engineering

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Optimasi Pemanfaatan Air Embung Kasih untuk Domestik dan Irigasi Tetes Ginting, Segel; Rahmandani, Dadan; Indarta, Abid Hendri
Jurnal Irigasi Vol 13, No 1 (2018): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

The Government of Indonesian was built Embung Kasih (retention basin) to overcome limited water resources in Tuatuka Village, NTT Province. It was planned for irrigation and domestic use. Retention basin operations require detailed planning with limited storage, so the water utilization optimizes are necessaries. These are needed to determine water use with several scenarios of rainfall conditions. It was conducted by the Generalized Reduced Gradient Method to maximize water use as an objective function. Water utilizes simulation in 1974 to 2015 was conducted as an evaluation of the reliability assessment. The objective of this research determines water used optimally for domestic use and irrigation. The results are obtained by several scenarios. The first scenario related to normal rainfall conditions, water use for domestic is around 2,604 people or irrigating 2.746 ha area using drip irrigation. The second scenario for extreme wet rainfall conditions, water use for domestic is around 3,601 people or land irrigating around 4.698 ha area. The third scenario with extreme dry rainfall conditions can produce water use for domestic is around 454 people or land irrigating around 0.45 ha area. Following their results by using the simulation method with data from 1974 to 2015, water use for domestic is, determined to be around 454 people, and an area irrigated 1 Ha with operational reliability assessment reaching 78.57%.

Simulasi Operasi Waduk Lamong untuk Kepentingan Air Baku dan Irigasi Sulistiono, Andi; Rahmandani, Dadan; Triyono, Joko
Jurnal Irigasi Vol 9, No 1 (2014): Jurnal Irigasi
Publisher : Balai Teknik Irigasi

Lamong River Basin is located in the Lamongan and Mojokerto Regency for the upstream part, Gresik Regency and Surabaya City for the downstream part. Lamong River Basin has area about Â± 720 km2 with the main river channel has length about Â± 103 km. Hydrological condition of Lamong River Basin is critical, as a result, most part of the Lamong River Basin that located in the region of Gresik and Surabaya Regency, every year is suffering from flooding due to overflowing. By contrast, in the upstream of Lamong River Basin is always shortage of water in the dry season. In the study, inflow discharge of Lamong Reservoir are obtained by synthetic streamflow data generation using Thomas Fiering method. Historical flow data are obtained by transforming rain data into discharge data using Mock model and using rainfall data of Ngimbang Station, Bluluk Station and Mantup Station and also discharge measurement data of Boboh Station in 1995-1997. The calculation of raw water demand is based on a standard requirement of raw water from Directorate General Human Settlements, Ministry of Public Works in 2003, while the irrigation water requirement is calculated by Standard Irrigation Planning (KP-01) in 1986. Simulations are conducted from the year of 2016 to 2025 with the use of Standard Operating Rule (SOR).The results show that the needs of raw water by people served by the Lamong Reservoir is equal to 5,70 million m3 in 2015 and 5,74 million m3 in 2025. Reliability of Lamong Reservoir in serving the needs of raw water will be achieved 99,17 % by the planting area covering 2.117 Ha with irrigation water reliability in serving 96,25 %.

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