PERENCANAAN JARINGAN IRIGASI AIR GOHONG DESA GUNUNG AYU KECAMATAN TANJUNG SAKTI KABUPATEN LAHAT SUMATERA SELATAN

DI. Air Gohong is an area with its livelihood principal population is farming and gardening. On the other hand actually income level of farmer in the work area is low, because their farm productivity level is still low. Therefore, the network of irrigation is planned so that the productivity of farmer in the area can be a maximum. In planning this Air Gohong irrigation, we plan 20 secondary canals, there are from Saluran Sekunder Air Gohong 1 (SSAG 1) through Saluran Sekunder Bangunan Bagi 3 (SSBB 3), with total length of Canal is 6,715 m. Water requirement of Air Gohong Irrigation wich wide 704.5 Ha is 1.46 l /s/ ha. In planning a secondary Canal of the Air Gohong irrigation, several methods are used, including methods of Algebra, Penman method and others. From the dimensions calculation of the canal, the canal with the maximum dimensions contained in the SSAG 1 with dimensions a = 704.5 ha; Q = 1.032 m3/sec; b = 1.3 m; h = 0.7 m; w = 0.4; L = 315 m, while the minimum contained in SSBB 3 with dimensions A = 18 ha; Q = 0.026 m3/sec; b = 0.4 m; h = 0.4 m; w = 0.4; L = 530 m. Costs for the Development of Air Gohong Irrigation is Rp. 20,607,428,186, -, the total time of this project are 220 days