<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "KARAKTERISTIK HIDROLOGI DAS ILAHAN\r\nMENGGUNAKAN PEMODELAN SWAT (Soil Water Assesment Tools)\r\n"^^ . "\r\nDaerah Aliran Sungai (DAS) Ilahan merupakan salah satu DAS yang berada di \r\nhulu DAS Sekampung. Keberadaan DAS Ilahan memberikan peran penting\r\ndalam siklus hidrologi Sub DAS Sekampung Hulu. Penelitian ini dilakukan untuk\r\nmenganalisis karakteristik hidrologi DAS Ilahan yang dilaksanakan bulan AprilJuni\r\n\r\n2020. Metode yang digunakan dengan pemodelan SWAT (Soil Water\r\nAssesment Tools). Karakteristik hidrologi DAS Ilahan berdasarkan hasil\r\npenelitian adalah koefisien regim aliran (KRA) sebesar 122,73 (sangat tinggi),\r\ndengan debit maksimum 14,74 m³/dtk dan debit minimum 0,12 m³/dtk; nilai\r\nkoefisien aliran tahunan (KAT) sebesar 0,419 (tinggi); surface runoff sebesar\r\n379,30 mm; subsurface runoff sebesar 707,05 mm; baseflow sebesar 348,01 mm;\r\nhasil air (water yield) sebesar 1.401,78 mm; sedimentasi sebesar 2,42 ton/ha dan\r\nerosi sebesar 12,38 ton/ha. Skenario tutupan lahan menggunakan RTK-RHL tahun\r\n2014-2029 seluas 430,57 ha, dengan asumsi mengubah tutupan lahan menjadi\r\nkebun campuran kerapatan tinggi. Skenario ini hasilnya diprediksi merubah\r\nkarakteristik hidrologi DAS Ilahan yaitu KRA menurun menjadi 115,08 (sangat\r\ntinggi) dengan debit maksimum14,04 m³/dtk dan debit minimum 0,12 m³/dtk;\r\nnilai KAT menurun menjadi 0,40 (sedang); surface runoff menurun menjadi\r\n291,12 mm; subsurface runoff meningkat menjadi 759,34 mm; baseflow \r\nmeningkat menjadi 377,86 mm; hasil air (water yield) meningkat menjadi\r\n1.412,93 mm; sedimentasi menurun menjadi 1,94 ton/ha dan erosi menurun\r\nmenjadi 9,93 ton/ha. Skenario RTK-RHL menyebabkan karakteristik hidrologi\r\nDAS Ilahan menjadi lebih baik dari kondisi eksisting. Skenario ini belum\r\nmemperbaiki karakteristik hidrologi DAS Ilahan secara optimal, sehingga\r\ndirekomendasikan dilakukan pemutakhiran RTK-RHL di DAS Ilahan.\r\n \r\nKata kunci : Baseflow, DAS Ilahan, Erosi, Sedimentasi, Subsurface Runoff,\r\nSurface Runoff, Water yield. \r\n\r\nThe Ilahan Watershed (DAS) is one of the watersheds located upstream of the\r\nSekampung watershed. The existence of the Ilahan watershed plays an important\r\nrole in the hydrological cycle of the Sekampung Hulu sub-watershed. This\r\nresearch was conducted to analyze the hydrological characteristics of the Ilahan\r\nwatershed. This research was conducted in April-June 2020. The method used in\r\nthis study used SWAT (Soil Water Assessment Tools) modeling. The\r\nhydrological characteristics of the Ilahan watershed based on the research results\r\nare the flow regime coefficient (KRA) of 122.75 (very high), with a maximum\r\ndischarge of 14.74 m³/s and a minimum discharge of 0.12 m³/s; annual flow\r\ncoefficient (KAT) value of 0.419 (high); surface runoff of 379.30 mm; subsurface\r\nrunoff of 707.05 mm; baseflow of 348.01 mm; water yield is 1,401.78 mm;\r\nsedimentation is 2.42 tons/ha and erosion is 12.38 tons/ha. The land cover\r\nscenario using RTK-RHL 2014-2029 covers an area of 430.57 ha, assuming that\r\nthe land cover is converted into a high-density mixed plantation. This scenario is\r\npredicted to change the hydrological characteristics of the Ilahan watershed,\r\nnamely the KRA decreases to 115.08 (very high) with a maximum discharge of\r\n14.04 m³/s and a minimum discharge of 0.12 m³/s; KAT value decreased to 0.40\r\n(medium); surface runoff decreased to 291.12 mm; subsurface runoff increased to\r\n759.34 mm; baseflow increased to 377.86 mm; water yield increased to 1,412.93 \r\nmm; sedimentation decreased to 1.94 tons/ha and erosion decreased to 9.93\r\ntons/ha. The RTK-RHL scenario causes the hydrological characteristics of the\r\nIlahan watershed to be better than the existing conditions. However, it has not\r\nimproved the hydrological characteristics of the Ilahan watershed optimally,\r\ntherefore it is recommended to update the RTK-RHL in the Ilahan watershed.\r\n\r\nKeywords: Baseflow, Erosion, Ilahan Watershed, Sedimentation, Subsurface\r\nRunoff, Surface Runoff, Water yield.\r\n \r\n\r\n"^^ . "2022-06-07" . . . . . "UNIVERSITAS LAMPUNG"^^ . . . "FAKULTAS PERTANIAN, UNIVERSITAS LAMPUNG"^^ . . . . . . . . . "1824151002 "^^ . "APRIADI"^^ . "1824151002 APRIADI"^^ . . . . . . "KARAKTERISTIK HIDROLOGI DAS ILAHAN\r\nMENGGUNAKAN PEMODELAN SWAT (Soil Water Assesment Tools)\r\n (File PDF)"^^ . . . "ABSTRAK.pdf"^^ . . . "KARAKTERISTIK HIDROLOGI DAS ILAHAN\r\nMENGGUNAKAN PEMODELAN SWAT (Soil Water Assesment Tools)\r\n (File PDF)"^^ . . . "KARAKTERISTIK HIDROLOGI DAS ILAHAN\r\nMENGGUNAKAN PEMODELAN SWAT (Soil Water Assesment Tools)\r\n (File PDF)"^^ . . . "TESIS TANPA PEMBAHASAN.pdf"^^ . . . "KARAKTERISTIK HIDROLOGI DAS ILAHAN\r\nMENGGUNAKAN PEMODELAN SWAT (Soil Water Assesment Tools)\r\n (Other)"^^ . . . . . . "KARAKTERISTIK HIDROLOGI DAS ILAHAN\r\nMENGGUNAKAN PEMODELAN SWAT (Soil Water Assesment Tools)\r\n (Other)"^^ . . . . . . "KARAKTERISTIK HIDROLOGI DAS ILAHAN\r\nMENGGUNAKAN PEMODELAN SWAT (Soil Water Assesment Tools)\r\n (Other)"^^ . . . . . . 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