Kajian Karakteristik Aliran Sungai Serang di AWLR Bendungan Kulonprogo Berdasarkan Pemodelan Hidrologi HEC-HMS

نویسندگان

چکیده

HEC HMS merupakan salah satu aplikasi pemodelan yang dapat digunakan untuk memodelkan nilai limpasan harian maupun bulanan berdasarkan karakteristik DAS. Tujuan penelitian ini adalah 1) Mengkaji fisik DAS Serang direpresentasikan oleh curve number (CN) 2) aliran berupa debit puncak, volume outflow, dan waktu puncak dari hidrograf banjir terukur dengan hasil menggunakan HEC-HMS. Nilai CN ditentukan metode SCS-CN. Analisis dilakukan HEC-HMS meliputi perhitungan presipitasi gage weight, runoff SCS CN, direct SCS-UH, baseflow constant monthly. Hasil menunjukkan pada tahun 2019 memiliki 83 kondisi AMC I. kalibrasi objective function Peak-Weighted RMS Error cukup baik yaitu sebesar 2.2% selisih antara simulasi observasi nilainya masing-masing 21.2 m3/s 21.6 m3/s. Secara keseluruhan, uji statistik validasi diketahui bahwa model menghasilkan sangat dilihat NSE, R2 PBIAS.HEC is a modeling application that can be used to daily and monthly values based on watershed characteristics. The objectives of this study are examine the physical characteristics which represented by flow in form peak discharge, outflow volume, time flood hydrograph measured results using value determined SCS-CN method. Flood analysis was performed including calculation precipitation showed had under I conditions. calibration with method quite good, namely difference between simulation discharge observation, each m3. /s Overall, statistical validation test show produces very good seen from PBIAS values.

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ژورنال

عنوان ژورنال: Jurnal geografi

سال: 2022

ISSN: ['2549-7057', '2085-8167']

DOI: https://doi.org/10.15294/jg.v19i2.33671