scholarly journals The Application of a Modified Version of the SWAT Model at the Daily Temporal Scale and the Hydrological Response unit Spatial Scale A Case Study Covering an Irrigation District in the Hei River Basin

2019 ◽  
Author(s):  
Zheng Wei ◽  
Baozhong Zhang ◽  
Yu Liu ◽  
Di Xu
Keyword(s):  
Spatial Scale ◽  
River Basin ◽  
Swat Model ◽  
Temporal Scale ◽  
Irrigation District ◽  
Hydrological Response ◽  
Response Unit ◽  
Hydrological Response Unit

scholarly journals Integrasi Model SWAT dan SIG dalam Upaya Menekan Laju Erosi DAD Deli, Sumatera Utara

2017 ◽  
Vol 31 (1) ◽  
pp. 46 ◽  
Author(s):  
Riki Rahmad ◽  
Ali Nurman
Keyword(s):  
Land Use ◽  
Swat Model ◽  
Geographical Information ◽  
Test Model ◽  
Hydrological Response ◽  
Weight Category ◽  
Response Unit ◽  
Percentage Difference ◽  
Land Use Scenarios ◽  
Hydrological Response Unit

Penelitian ini bertujuan untuk melakukan simulasi model SWAT dalam menghitung besarnya laju erosi DAS, menguji kesesuaian model dalam memprediksi erosi, serta menentukan skenario penggunaan lahan yang paling optimal menurunkan laju erosi. Penelitian ini dilakukan di DAS Deli, Sumatera Utara. Pada penelitian ini analisis SWAT dilakukan dengan bantuan Sistem Informasi Geografi (SIG) melalui 4 proses yaitu delineasi, pembentukan Hydrological Response Unit (HRU), pengolahan data dan simulasi, serta proses visualisasi. Hasil penelitian menunjukkan besarnya erosi rata-rata DAS Deli adalah 410,72 ton/ha/tahun. Hasil ini menunjukkan DAS Deli termasuk kedalam Tingkat Bahaya Erosi (TBE) kategori Berat dengan kriteria sangat berat 37,04%, berat 17,07%, sedang 21,46%, ringan 17,38%, dan sangat ringan 7,04%. Uji validasi model menunjukkan bahwa ada hubungan positif antara debit model dan observasi dimana persentase perbedaan nilainya sangat kecil yang artinya besarnya debit model hampir sangat mendekati besarnya debit observasi, serta model dikategorikan sangat baik dalam melakukan simulasi debit aliran harian pada Sungai Deli. Metode skenario adalah berdasarkan analisis TBE. Hasil skenario penggunaan lahan berhasil menurunkan laju erosi DAS Deli 34,78% menjadi 267,88 ton/ha/tahun.This study aims to conduct SWAT model simulation calculation of the rate of erosion of the watershed, testing the suitability of the model in predicting erosion, land use scenarios and determine the most optimal decrease the rate of erosion. This research was conducted in the watershed Deli, North Sumatra. In this study, SWAT analysis performed with the help of Geographical Information Systems (GIS) through 4 delineation process, namely, the establishment of Hydrological Response Unit (HRU), data processing and simulation, as well as the visualization process. The results show the average amount of erosion DAS Deli is 410.72 ton/ha/year. These results indicate DAS Deli included into Erosion Hazard Level (TBE) weight category with very strict criteria 37.04%, 17.07% by weight, were 21.46%, 17.38% mild and very mild 7.04%. Test model validation indicates that there is a positive relationship between the discharge and observation models where the percentage difference in value is very small, which means the amount of discharge model is very very close to a number of discharge observations, and models are categorized very good at simulating the daily flow rate at the Deli River. The scenario method is based on analysis of TBE. The results of land use scenarios managed to reduce the rate of erosion of the watershed Deli 34.78% to 267.88 tons/ha/year.

Integrated numerical model for irrigated area water resources management

2019 ◽  
Vol 11 (4) ◽  
pp. 980-991 ◽  
Author(s):  
Aidi Huo ◽  
Xiaofan Wang ◽  
Yan Liang ◽  
Cheng Jiang ◽  
Xiaolu Zheng
Keyword(s):  
River Basin ◽  
Water Resource Management ◽  
Assessment Tool ◽  
Swat Model ◽  
Hydrologic Model ◽  
Heihe River Basin ◽  
Irrigation District ◽  
Heihe River ◽  
Model Parameters ◽  
Long Term Effects

Abstract The likelihood of future global water shortages is increasing and further development of existing operational hydrologic models is needed to maintain sustainable development of the ecological environment and human health. In order to quantitatively describe the water balance factors and transformation relations, the objective of this article is to develop a distributed hydrologic model that is capable of simulating the surface water (SW) and groundwater (GW) in irrigation areas. The model can be used as a tool for evaluating the long-term effects of water resource management. By coupling the Soil and Water Assessment Tool (SWAT) and MODFLOW models, a comprehensive hydrological model integrating SW and GW is constructed. The hydrologic response units for the SWAT model are exchanged with cells in the MODFLOW model. Taking the Heihe River Basin as the study area, 10 years of historical data are used to conduct an extensive sensitivity analysis on model parameters. The developed model is run for a 40-year prediction period. The application of the developed coupling model shows that since the construction of the Heihe reservoir, the average GW level in the study area has declined by 6.05 m. The model can accurately simulate and predict the dynamic changes in SW and GW in the downstream irrigation area of Heihe River Basin and provide a scientific basis for water management in an irrigation district.

Modeling stream flow and sediment yield using the SWAT model: a case study of Ankara River basin, Turkey

2017 ◽  
Vol 39 (3) ◽  
pp. 264-289 ◽  
Author(s):  
Umit Duru ◽  
Mazdak Arabi ◽  
Ellen E. Wohl
Keyword(s):  
River Basin ◽  
Sediment Yield ◽  
Stream Flow ◽  
Swat Model
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