Kajian Optimalisasi Sistem Irigasi Rawa (Studi Kasus Daerah Rawa Semangga Kabupaten Merauke Propinsi Papua)

Abstract

Population growth is increasing, but it is not accompanied by an increase in food needs impartial. Indonesian swamp land potential of about 33.4 million ha, consisting of tidal swamp 20.1 million ha and 13.3 million ha of lowland swamp. The Government has made the development of swamps into agricultural land, including the Semangga swamp area (4,000 ha) The cropping pattern of rice (100%)-crops (40%)-"bero". The problem faced are; the length is 7-month of dry season and low agricultural production, are therefore likely to swamp irrigation system optimalization. The method used to carry out water balance analysis and performance assessment of irrigation system include; the physical condition of irrigation, the application of the system of planting and water delivery techniques to the use of land for a year, then performed according to the potential land development plan and water resources available. Results of water balance analysis on Semangga Swamp Area existing condition indicate that water deficit occurred during the second growing season crops (May-July) and in December. So do the appropriate development plan defined cropping pattern III, namely rice (100%)-crops (60%)-crops (45%) with the addition of a total area of 1,000 ha through the use Kumbe River and Maro River and other water reservoirs to overcome deficits in the availability of water in the dry season that is equal to 2.5m³/s (April to August and October to December), while 6.5m³/s in September, 72.40% irrigation system performance with good category.

Alokasi Air Das Sekampung Sebagai Upaya Pengelolaan Sumber Daya Air Berkelanjutan

“…Untuk itu diperlukan alokasi air yang adil, efisien dan berkelanjutan, agar sumber daya air yang ada dapat memberikan manfaat yang sebesar-besarnya bagi masyarakat. Bilamana tidak tersedia data debit andalan pada lokasi pos duga air dan atau di lokasi bendung yang terdapat dalan sistem, maka perlu melakukan perhitungan debit andalan terlebih dahulu [21]. Peramalan ketersediaan air untuk memenuhi kebutuhan air irigasi dianjurkan menggunakan skenario tahun kering (pesimistik) dengan mengambil dependable flow Q80%, sedangkan untuk memenuhi kebutuhan air untuk pemeliharaan sungai didasarkan atas Q95%.…”

Alokasi Air Das Seputih Sebagai Upaya Pengelolaan Sumber Daya Air Berkelanjutan

“…Pengelolaan alokasi air meliputi kegiatan perencanaan, pelaksanaan, pemantauan dan evaluasi, pengendaliaan serta pelaporan alokasi air. Penyelenggaraan alokasi air dilaksanakan oleh Institusi pengelola wilayah sungai tersebut meliputi Dinas Pengairan, Balai Pengelola Sumberdaya Air dan Badan Usaha Pengelola Sumber Daya Air [6][7].…”

Empowerment of Farmers' Group in Wamena City Through the Making of Well-Conected Irrigation Technology

“…Luas lahan rawa di Indonesia sekitar 33,4 juta ha yang terdiri dari rawa pasang surut seluas 20,1 juta ha dan rawa lebak seluas 13,3 juta ha (DPU, 1998). Sebagian besar lahan rawa tersebut terdapat di Pulau Sumatera, Kalimantan, Sulawesi dan Papua (Pakpahan et al, 2014).…”