SWAT model

This study utilized the GIS-based Soil and Water Assessment Tool (SWAT) model to simulate the flow of Vu Gia - Thu Bon river basin at two hydrological stations - Nong Son and Thanh My, during the calibration period (2004 - 2010) and the verification period (2011 - 2015). The evaluation results of both periods, as measured by the NSE and R2 indexes, were found to be above 0.75.

12p dianmotminh02 03-05-2024 2 2   Download

This study applied an integrated surface water-groundwater (SW-GW) model, SWAT-MODFLOW to study interaction of surface and groundwater than simulate saltwater intrusion at a regional scale in Da Nang coastal city. Model components were calibrated and validated using monthly river flow data and hydraulic head data for the 2005-2020 period and showed good agreement with observed data.

10p nhanchienthien 25-07-2023 7 3   Download

In this study, Poko river basin is selected for evaluation of water resources in the basin, as there is a decline inflow due to reduced rainfall over years and also due to increased activities in the upstream areas of the catchment. The study focused on evaluation of hydrological components for Poko river basin using hydrological model known as soil and water assessment tool (SWAT).

6p vidoctorstrange 06-05-2023 6 4   Download

The hydrological models are typically classified in stochastic, lumped conceptual and detailed physically-based models. Among these models, only physically-based models consider spatial distribution of driving factors and describe the physical processes by mathematic equations. In this study, the semi-distributed model QSWAT model is selected to simulate the flow to Dak Wi reservoir in Kon Tum province.

3p vipagani 20-10-2022 4 1   Download

The goal of this study is to examine the responses of hydrology and water resource availability to future climate change in the 3S (Sekong, Sesan, and Srepok) river basin located in the tropical countries of Laos, Vietnam, and Cambodia.

10p nguaconbaynhay10 29-01-2021 45 4   Download

The present study, it concluded that remote sensing techniques (ASTER–DEM) coupled with GIS can be a powerful tool in morphometric analysis of a region or basin and the data can be used for hydrological studies and water resource management. In the present study the liner and areal aspect parameters were calculated. The major parameters were Drainage density, stream order and Bifurcation ratio were play major role for hydrological processing and the values were, 0.58, 1-5 th order and 4 respectively.

7p gaocaolon9 22-12-2020 18 2   Download

Rice is the world's most consumed cereal grain, making up the dietary staple food of more than 60 percent of the world's population. For agriculture dominated country like India, the assessment of rice yield is of utmost importance for policy makers in managing the food security and water resources.

7p caygaocaolon6 30-07-2020 15 2   Download

For accurate and easy estimation of runoff and sediment yield can be done by using physical based continuous hydrological model. Among the many hydrological model Soil and Water Assessment Tool (SWAT) is the more promising model for simulations in predominant agricultural watershed. Moreover the model is better in assessing both spatial and temporal variability of the hydrological process under very large watershed. The present paper provides the methodology used by the SWAT for calculation of runoff and sediment yield.

8p nguathienthan5 04-06-2020 18 1   Download

This study aims to assess surface and groundwater availability in Dong Nai river basin by integrating SWAT and MODFLOW models. These models run individually and integrated through the recharge rates. The simulation results were then compared and showed good agreement with observed data. The results showed Tuyen Lam, Da Huoai and Dak Song districts are the locations which have high surface water availability, in the range of 40 - 50 l/s/km2 .

8p quenchua5 14-05-2020 10 0   Download

Surface runoff estimation from a watershed is a prerequisite for surface water assessment. Hydrological models are the only tool to assess the flow from a watershed under different scenarios. The Soil and Water Assessment Tool (SWAT), a physically based hydrological model, is used modelling monthly streamflow in Altuma catchment. The model was calibrated from 1985 to 1996. Initial 3 years from 1985 to 1987 were taken as warm up periods. Then the model was validated for 7 years from 1997 to 2003.

6p kequaidan4 05-05-2020 18 1   Download

The Patapur micro-watershed situated in semi-arid region needs effective management of resources for sustainable agriculture. The Soil and Water Assessment Tool (SWAT), a semi distributed physically based model, was chosen and set up in the Patapur micro-watershed for sediment yield modeling. SWAT-CUP (SWAT-Calibration and Uncertainty Programs) was used for model calibration, sensitivity and uncertainty analysis, following the Sequential Uncertainty Fitting (SUFI2) technique.

20p kethamoi4 18-04-2020 16 1   Download

Calibration and validation are the two important processes needed to perform for physically based distributed watershed models before their use for hydrologic calculations. The present study was conducted to calibrate the SWAT model for Kunthipuzha basin using SUFI-2 algorithm in SWAT-CUP package. SUFI-2 algorithm accounts for most sources of uncertainties and it is also easy to handle.

11p caygaocaolon4 01-04-2020 15 2   Download

This paper presents an integration approach involving Remote sensing / Geographic information system(RS /GIS) and hydrological models to characterized and quantify the effect of land use/ land cover (LULC) change on basin hydrology parameters. The Arc SWAT model was used daily weather and stream flow data of Upper Narmada basin from 1989 to 2011. Study evaluates change in Surface runoff, Evapo-transpiration, Total water yield, stream flow and Total aquifer recharge. Further analysis present additional evidence that changes in vegetation cover altered the hydrological response to region.

5p cothumenhmong4 25-03-2020 22 1   Download

Runoff estimation is a key factor in the design of soil and water conservation structures to prevent land degradation and erosion. In the present study, the Soil and Water Assessment Tool (SWAT) model was used to estimate the runoff in Pindwara watershed situated in the Sirohi district of Rajasthan and spanning over an area of about 1428 km2 . Temporal weather data of rainfall and temperature, digital elevation models, soil data, land use land cover imagery was provided to the model as input to estimate runoff at the watershed outlet.

10p chauchaungayxua3 07-02-2020 21 2   Download

The aim of the present study is to assess the effect of hydropower dams on the streamflow in the Be river basin using the Soil and Water Assessment Tool (SWAT). Model calibration and validation of SWAT were conducted using the historical data collected from two stream gauges, namely Phuoc Long and Phuoc Hoa, and the obtained results indicated that SWAT shows a good reliability in reproducing streamflow with R2 >0.90 and NSE>0.70 for both periods of calibration (1980-1990) and validation (1991-1993).

5p chauchaungayxua2 07-01-2020 30 1   Download

In this study, performance of semi-distributed hydrologic model, namely Soil and Water Assessment Tool (SWAT), was evaluated for hydrologic cycle simulation in the Cong Watershed.. The model parameters were calibrated and validated using meteorological data observed at five gauges and runoff data observed at Tan Cuong Station between 1961 and 1975.

9p vimariecurie2711 30-07-2019 17 0   Download

As a result of the increased availability of spatial information in watershed modeling, several easy to use and widely accessible spatial datasets have been developed. Yet, it is not easy to decide which source of data is better and how data from different sources affect model outcomes.

16p vimb123 11-01-2019 16 2   Download

The main objective of this study is to assess and simulate impacts of climate change on erosion and water flow in the basin. Using a GIS database and Soil and Water Assessment Tool (SWAT) model, the water flow and soil loss were assessed with data in period 1980-1999 called the based period, then simulated until 2100 considering the medium emission scenario (B2).

17p meolep1 28-11-2018 30 0   Download

SWAT model was used to assess the impacts of climate change on the streamflow of Ben Hai River Basin. The daily streamflow for 1979 - 1996 and 1997 - 2006 was used to calibrate and validate the SWAT model, respectively. Nash efficiency values for the daily comparison were 0.72 for the calibration period and 0.74 for the validation period. Three scenarios were analyzed relative to the baseli ne with 28-year time series. A doubling of the atmospheric C02 content to 660 ppm (while holding other climatic variables) resulted in a 7.

7p dem_thanh 22-12-2012 56 4   Download

Mô phỏng thủy văn của chương trình Fortran (HSPF) là một lưu vực sông quy mô, semidistributed mô hình phát triển mô hình từ bản gốc Stanford (Bicknell et al 2001). Đây là một trong hai mô hình năng động dành cho các lưu vực sông mô hình thống trị nguồn nonpoint trong các Cơ quan Bảo vệ Môi trường Hoa Kỳ (EPA) tốt hơn Đánh giá Khoa học Tích hợp các điểm và các nguồn gói Nonpoint (lưu vực) (Hoa Kỳ Cơ quan Bảo vệ môi trường 2004a). Các mô hình khác là đất nước Đánh giá Tool (SWAT) được mô tả bởi Arnold et...

26p bengoan741 22-12-2011 57 7   Download