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      Kinerja SWAT Modifikasi pada Program QSWAT untuk Memprediksi Debit Air di Sub-DAS Citanduy Hulu

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      Date
      2024
      Author
      Maulana, Akmal Ikhsan
      Sapei, Asep
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      Abstract
      DAS Citanduy menjadi salah satu DAS terbesar di Pulau Jawa yang termasuk kondisi kritis. Sub-DAS Citanduy Hulu merupakan Sub-DAS di Citanduy yang menjadi kawasan penyangga DAS, yang perlu adanya pengelolaan dan analisis hidrologi yang baik, agar dapat tetap terjaga kualitas dan kuantitasnya. Cara menilai kondisi DAS dapat menggunakan model hidrologi berupa SWAT. Pada penelitian ini bertujuan untuk menganalisis kinerja dari model SWAT Modifikasi yang dibandingkan dengan model SWAT Original dan model SWAT Pothole pada program QSWAT untuk memprediksi debit air di Sub-DAS Citanduy Hulu. Setiap model tersebut akan dilaksanakan kalibrasi dan validasi menggunakan SWATCUP. Hasil dari kalibrasi dan validasi dari setiap model akan dibandingkan dengan nilai debit observasi, menggunakan nilai NSE dan nilai R2. Berdasarkan hasil validasi dari setiap model didapatkan nilai yang berbeda-beda. Model SWAT Original didapatkan nilai NSE sebesar 0,70 dan nilai R2 sebesar 0,93. Model SWAT Pothole didapatkan nilai NSE sebesar 0,73 dan nilai R2 sebesar 0,94. Model SWAT Modifikasi didapatkan nilai NSE sebesar 0,75 dan nilai R2 sebesar 0,94.
       
      The Citanduy watershed is one of the largest watersheds in Java that is in critical condition. The Citanduy Hulu Sub-watershed is a sub-watershed in Citanduy which is a watershed buffer area, which needs good hydrological management and analysis, so that its quality and quantity can be maintained. How to assess watershed conditions can use a hydrological model in the form of SWAT. This study aims to analyze the performance of the Modified SWAT model compared to the Original SWAT model and the SWAT Pothole model in the QSWAT program to predict water discharge in the Citanduy Hulu Sub-Watershed. Each model will be calibrated and validated using SWATCUP. The results of calibration and validation of each model will be compared with the observed discharge value, using the NSE and R2 values. Based on the validation results of each model obtained different values. SWAT Original model obtained NSE value of 0.70 and R2 value of 0.93. SWAT Pothole model obtained NSE value of 0.73 and R2 value of 0.94. The Modified SWAT model obtained an NSE value of 0.75 and R2 value of 0.94.
       
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      http://repository.ipb.ac.id/handle/123456789/154583
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      • UT - Civil and Environmental Engineering [1042]

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      Indonesia DSpace Group 
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