PERENCANAAN JARINGAN IRIGASI DAERAH AIR PAYANG KABUPATEN LAHAT

The final report is about the planning of irrigation network at Air Payang area Lahat regency. This report discusses the planning and calculation of the dimensions of the secondary line SSAP 1 until SSBGKa 2 with a total channel length of 1664,6 m and tertiary line STAP 1 until STAP 4 with a total channel length of 1456,7 m. In addition to planning, there are 8 quarter channels. The planning of the irrigation network is planned to meet or support the food production and food production is increasing. Planning data for the writing of this final report includes rainfall data, map, and others. The method used is the method of rata-rata Aljabar and methods Penmann and others. Based on calculations derived dimensions of each trapezoid-shaped secondary channel for SSAP 1 ( b : h = 1 : 1, v = 0,25 m/det , I = 0,00019840 L = 111,23 m ), SSAP 2 ( b : h = 1 : 1, v = 0,25 m/det , I = 0,00021214 L = 1530,7 m ), STAP 1 ( b : h = 1 : 1, v = 0,25 m/det , I = 0,00054601 L = 11,77 m ), STAP 2 ( b : h = 1 : 1, v = 0,25 m/det , I = 0,00054601 L = 11,8 m ), STAP 3 ( b : h = 1 : 1, v = 0,25 m/det , I = 0,00089343 L = 12 m ), STAP 4 ( b : h = 1 : 1, v = 0,25 m/det , I = 0,00082181 L = 1456,7 m). In implementing this project requires funding budget of Rp 13.095.905.000,00. Key words: Irrigation, Air Payang, Aljabar method