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All Journal Jurnal Teknik Sipil Giratory Upgris Jurnal Rekayasa Infrastruktur Hexagon
Dewi Nusantara, Danayanti Azmi
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Civil Engineering, Building, Construction & Architecture Engineering Transportation

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OPTIMALISASI KINERJA TEKNIS PENGELOLAAN DAERAH IRIGASI SALURAN INDUK MADIUN KABUPATEN MADIUN Dewi Nusantara, Danayanti Azmi; Damayanti, Nada Devi
Jurnal Teknik Sipil Giratory UPGRIS Vol 5, No 2: Desember 2024
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/giratory.v5i2.21961

Abstract

Ulo Secondary Canal which has an irrigation area of 1,352 ha is one of the secondary canals in the Madiun Main Canal. Ulo Secondary Canal is supplied by three dams namely Semawur Dam, Jati Dam and Gondrok Dam which are located in Madiun Regency. The Madiun Main Canal Irrigation Area has been rehabilitated in 2019, and has been completed in 2022. The Madiun Main Irrigation Channel area is still in need of water. The methods used to calculate water requirements are Climatology Method, FJ. Mock Method, and Water Balance Method. From the calculation, it is known that the condition before rehabilitation, the value of water availability cannot fulfill agricultural water needs in the Ulo Secondary Canal area. In conditions before rehabilitation, the supply from Jati Dam is 18% with a value between 0.43 m3/s - 0.72 m3/s, coupled with water withdrawal at the Semawur Dam intake of 0.06 m3/s and water withdrawal at the Gondrok Dam intake of 0.07 m3/s. The existing water availability can only fulfill the needs of the cropping pattern of paddy (20%) - crops (40%) - crops (45%), with the smallest residual discharge value of 0.09 m3/s in April III. After rehabilitation, the supply value of Jati Dam is 15% with a value between 2.17 m3/s - 2.72 m3/s, with water withdrawal at the Semawur Dam intake of 0.06 m3/s and water withdrawal at the Gondrok Dam intake of 0.07 m3/s.The percentage value after rehabilitation is smaller than before rehabilitation but the value of water supply is bigger. Based on these conditions, several alternative cropping patterns are planned, such as Paddy (100%) - Crops (100%) - Crops (100%), Paddy (100%) - Paddy (100%) - Crops (100%) and Paddy (100%) - Paddy (100%) - Paddy (100%) with a profit amounting to IDR 6,415,515,780.00 in conditions before rehabilitation and after rehabilitation, on alternative III with a cropping pattern of paddy (100%) - paddy (100%) - paddy (100%) obtained the highest profit amounting to IDR 62,144,490,720.00.
Analisis Jaringan Irigasi pada Daerah Irigasi Waduk Tenggor Desa Tenggor Kecamatan Balongpanggang Gresik: Analysis of Irrigation Network in the Tenggor Reservoir Irrigation Area, Tenggor Village, Balongpanggang Subdistrict, Gresik Yuli Hariyanti; Dewi Nusantara, Danayanti Azmi
Jurnal Rekayasa Infrastruktur HEXAGON Vol 8 No 2 (2023): HEXAGON
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/hexagon.v8i2.1104

Abstract

The irrigation system at Tenggor Reservoir in Tenggor Village, Balongpanggang, Gresik cannot be used to irrigate rice crops. Water volume frequently decreases and is not used to its fullest potential. Therefore, in order to correctly manage water resource management, it is required to analyze the irrigation network in an attempt to restore the irrigation network's functionality. The FJ Mock method for calculating the mainstay discharge gave the highest 80% value of 1,597 m3/s with the greatest discharge requirement of 1,456 m3/s. The overall reservoir capacity was calculated using reservoir storage. The reservoir's overall storage capacity was found to be 219345 m3, as well as its effective capacity of 186443 m3 and its dead capacity of 32902 m3. The NFR of Tenggor Irrigation Area with the paddy's planting pattern is 1.083 lt/dt/ha. The total capacity needed for irrigate is 287067 m3 whereas the availability of an effective capacity is 186443 m3. So, with the availability of 70% of the effective capacity, it can supply the irrigation areas of 860 ha with twice of planting patterns. The study's findings include five different channel dimensions with various water levels. Type 1 for tertiary channels with B and H dimensions of 0.50 meters each. For secondary channels with various B sizes in order, type 2, type 3, and type 4: B = 0.50, 0.70, 0.80, and the same H sizes are 1.00 meters, respectively. Type 5 with B = 1.30 m and H = 1.50 m for the main channel.
EVALUASI JARINGAN IRIGASI SALURAN SEKUNDER NGABEAN KABUPATEN NGAWI PADA D.I. SALURAN INDUK MADIUN: Evaluation Of Ngabean Secondary Canal Irrigation Network, Ngawi District On Saluran Induk Madiun Irigation Area Dewi Nusantara, Danayanti Azmi; Poppy Fajar Putri Hartiningsih
Jurnal Rekayasa Infrastruktur HEXAGON Vol 9 No 1 (2024): HEXAGON
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/hexagon.v9i1.1634

Abstract

Ngabean Secondary Canal which is located in Ngawi Regency receives main water supply from Jati Dam amounting to 25% of the main dam discharge and water withdrawal from the Ngabean Dam intake of 0.45 m3/ha. However, this value does not meet the water needs of the entire irrigation area. Apart from that, the Ngabean Secondary Canal also experienced a reduction in the irrigation area from 1840 ha to 1818 ha. From the results of the analysis that has been carried out, in conditions before rehabilitation, the highest dependent flow of Jati Dam was 1.01 m3/s and the lowest was 0.00 m3/s with water withdrawal at the intake of 25%, able to fulfill the planting pattern of paddy(15%)-crops(75%)-crops(50%) generated a production profit of IDR 8.794.123.880,00. Meanwhile, after rehabilitation, the highest was 5.93 m3/s and the lowest was 3.21 m3/s with an intake of 32%, able to fulfill the planting pattern of paddy(100%)-paddy(100%)-paddy(100%) resulting in a production profit of IDR 83,564,115,480.00 with the highest irrigation water requirement value of 3.10 m3/sec. Apart from that, the existing canal dimensions still meet the requirements after land reduction so that no changes to the canal dimensions are required.
Co-Authors Damayanti, Nada Devi Poppy Fajar Putri Hartiningsih Yuli Hariyanti