PERENCANAAN JARINGAN IRIGASI PADA DAERAH IRIGASI AIR MANNA I KABUPATEN LAHAT PROVINSI SUMATERA SELATAN

This final report contains the irrigation network planning at the Regional Irrigation Water Manna I Lahat regency of South Sumatra Province. This report discusses the planning and calculation of channel dimensions both primary, secondary, and tertiary. The data plan for the writing of the final report includes a situation map data, rainfall data, and climatological data (air temperature data, the data of air humidity, wind speed data, and the data of solar radiation). The method used is the normal ratio method, algebraic method, Penman method, and others. From the calculation results obtained primary channel dimensions (AM1- AM5) is SPAM5 with A = 66 ha; Q = 0.111 m³ / sec; L = 1680 m; b = 0.47 m; h = 0.47 m; I = 0.0002384, SPAM4 with A = 234 Ha; Q = 0.395 m³ / sec; L = 937 m; b = 1.01 m; h = 0.67 m; I = 0.0002662, SPAM4.1 with A = 236 Ha; Q = 0,398 m³ / sec; L = 335 m; b = 1.01 m; h = 0.67 m; I = 0.0002647, SPAM3 with A = 600 Ha; Q = 1,013 m³ / sec; L = 693 m; b = 1.34 m; h = 0.67 m; I = 0.0006953, SPAM2 with A = 630 Ha; Q = 1.063 m³ / sec; L = 911 m; b = 1.37 m; h = 0.69 m; I = 0.0006731, Spam1 with A = 643 Ha; Q = 1,085 m³ / sec; L = 495 m; b = 1.39 m; h = 0.69 m; I = 0.0006640. And also the dimensions of the secondary channel (SSB1-SSB2 & SSMB1-Ssk1) is Ssk1 with A = 38 ha; Q = 0.064 m³ / sec; L = 158 m; b = 0.36 m; h = 0.36 m; I = 0.0003444, SSMB7 with A = 42 ha; Q = 0,071 m³ / sec; L = 629 m; b = 0.38 m; h = 0.38 m; I = 0.0003222, SSMB6 with A = 66 ha; Q = 0.111 m³ / sec; L = 1052 m; b = 0.47 m; h = 0.47 m; I = 0.0002384, SSMB5 with A = 79 ha; Q = 0.133 m³ / sec; L = 1457 m; b = 0.52 m; h = 0.52 m; I = 0.0002114, SSMB4 with A = 128 Ha; Q = 0,216 m³ / sec; L = 708 m; b = 0.60 m; h = 0.60 m; I = 0.0002492, SSMB3 with A = 133 Ha; Q = 0.224 m³ / sec; L = 219 m; b = 0.61 m; viii h = 0.61 m; I = 0.0002430, SSMB2 with A = 137 Ha; Q = 0.231 m³ / sec; L = 946 m; b = 0.62 m; h = 0.62 m; I = 0.0002382, SSMB1 with A = 168 Ha; Q = 0.284 m³ / sec; L = 1049 m; b = 0.69 m; h = 0.69 m; I = 0.0002079, SSB2 with A = 211 Ha; Q = 0.356 m³ / sec; L = 1528 m; b = 0.96 m; h = 0.64 m; I = 0.0002852, SSB1 with A = 286 Ha; Q = 0.483 m³ / sec; L = 616 m; b = 1.04 m; h = 0.69 m; I = 0.0003324. In this plan at an estimated cost Rp.27.424.509.846, - the time during the 213-day labor jobs. Keywords: Irrigation, Water Manna I