<![CDATA[Abstrak Sebagai kampus baru, pembangunan infrastruktur Institut Teknologi Sumatera (ITERA) disegala sektor terus dilakukan demi upaya menunjang proses pembelajaran, namun berdampak pada perubahan alih fungsi lahan sehingga daya resap air semakin berkurang dan limpasan air permukaan semakin meningkat, sehingga perlu dilakukan perencanaan drainase yang terintegrasi dengan pembangunan. Perencanaan drainase meliputi analisis curah hujan, pengukuran lapangan dan perhitungan dimensi saluran serta simulasi pada software HECRAS. Metode rata-rata aljabar digunakan untuk analisis curah hujan wilayah dengan distribusi log pearson III. Dimensi saluran berupa persegi dengan lebar 0,56 m dan tinggi 0,73 m. Adapun debit saluran 0,53 m3/det dengan metode rasional, sedangkan total biaya perencanaan drainase sepanjang 1282,1 m ini sebesar Rp. 1.107.523.000 (Satu Milyar Seratus Tujuh Juta Lima Ratus Dua Puluh Tiga Ribu Rupiah). Dengan terbangunnya drainase diharapkan mampu mengalirkan limpasan air permukaan yang terjadi. Kata Kunci: ITERA, Drainase, Debit, HEC-RAS Abstract As a new campus, the infrastructure development of the Sumatera Institute of Technology (ITERA) in all sectors continues to support the learning process, however it has an impact on changes in land use so that water absorption capacity is decreasing and surface runoff is increasing, so it is necessary to carry out drainage planning that is integrated wit development. Drainage planning includes analysis of rainfall, field measurements and calculation of channel dimensions as well as simulations on the HECRAS. The aljabar method is used for the analysis of regional rainfall with a pearson III log distribution. The dimensions of the channel are square with widht of 0,56 m and height of 0,73 m. the channel discharge is 0,53 m3/s using the rational method. While total cost of drainage planning along the 1282,1 m is Rp 1.107.523.000, (one billion one hundred seven milion five hundred twenty three thousand rupiah). With the construction of the drainage is expected to be able to drain the surface runoff that occurs. Keywords: ITERA, Drainage, Discharge, HEC-RAS]]>
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