Improving River Flow Simulation Using a Coupled Surface-Groundwater Model for Integrated Water Resources Management

Abbas, Salam A.; Xuan, Yunqing; Bailey, Ryan T.

doi:10.29007/6ft7

Cited by 17 publications

(6 citation statements)

References 17 publications

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“…The following supporting information can be downloaded at: https: //www.mdpi.com/article/10.3390/su152215779/s1, S1: List of the CMIP5 GCMs and the resolution of atmospheric and ocean grids; S2: List of outputs of the 17 CORDEX RCMs available on ESGF; S3: Hydrological model and climate change impact studies by different authors worldwide (2018-2019); S4: The complete definitions of the SWAT calibration and validation parameters. References [215][216][217][218][219][220][221][222][223][224][225][226] are cited in supplementary materials.…”

Section: Supplementary Materialsmentioning

confidence: 99%

Hydroclimatic Impact Assessment Using the SWAT Model in India—State of the Art Review

Dubey,

Kim,

Her

et al. 2023

Sustainability

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The Soil and Water Assessment Tool (SWAT) has been widely employed to assist with decision making and management planning for assessing and mitigating the impact of climate change. This model has gained popularity in India as the country is facing increasing water issues under projected climate changes. However, a systematic review of the literature that discusses the applicability of the model, the impact assessment process, and the interpretation of the modeling results in India remains lacking. We synthesized and reviewed 110 recent SWAT modeling studies (published from 2012 to 2022) that evaluated the impact of future climate change on water resources in India to identify research gaps that need to be filled to advance SWAT modeling practices for impact assessments. The review revealed that the SWAT model provided acceptable accuracy statistics in most (90%) of the studies reviewed. Half of these studies identified the base curve number (CN2) as the parameter to which the water balance is the most sensitive; thus, this parameter was included in the calibration process. The accuracy of SWAT modeling is closely associated with the accuracy of the weather data fed to the model. However, extreme events, including heavy storm events and severe droughts, were rarely considered in climate change impact assessments using the SWAT model. Most studies downscaled global-scale climate modeling outputs to local weather stations when applying the SWAT model using various methods, such as the delta change method, multiple linear regression method, gamma–gamma transformation, fitted histogram equalization, and quantile mapping. Further, most studies investigated the performance of the SWAT model before applying the model to quantify the future hydrological consequences of projected climate change in a subsequent scenario analysis. This review suggests that further evaluations of the characteristics and development processes of existing climate data products are needed to effectively consider extreme events in impact assessments. In addition, this review finds that climate change impact modeling has been improved with advances in climate projection preparation, including ensemble averaging, bias correction, and downscaling methods. This regional review of current SWAT modeling practices for climate change impact assessments can be used to create reliable future hydrological projections in India.

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Section: Supplementary Materialsmentioning

confidence: 99%

Hydroclimatic Impact Assessment Using the SWAT Model in India—State of the Art Review

Dubey,

Kim,

Her

et al. 2023

Sustainability

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“…for the rest of months) for RCP85 scenario (2020-2040), as it can be seen in Figure 13a for PWS1; 4. Scenario IV: Monthly time series, that is, the maximum yearly water withdraws is calculated based on historical data of surface-water abstraction for the period of 1970-2004 that was estimated by Abbas and Xuan [38] for the RCP85 scenario (2020-2040), as it can be seen in Figure 13b for PWS1.…”

Section: Water Evaluation and Planning (Weap) Modelmentioning

confidence: 99%

Assessing Climate Change Impact on Water Resources in Water Demand Scenarios Using SWAT-MODFLOW-WEAP

2022

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In this article, we present the use of the coupled land surface model and groundwater flow model SWAT-MODFLOW with the decision support tool WEAP (Water Evaluation and Planning software) to predict future surface-water abstraction scenarios in a complex river basin under conditions of climate change. The modelling framework is applied to the Dee River catchment in Wales, United Kingdom. Regarding hydrology, the coupled model improves overall water balance and low-streamflow conditions compared with a stand-alone SWAT model. The calibrated SWAT-MODFLOW is employed with high-resolution climate model data from the UKCP18 project with the future scenario of RCP85 from 2020 to 2040. Then, water supply results from SWAT-MODFLOW are fed into WEAP as input for the river reach in the downstream region of the river basin. This system is utilized to create various future scenarios of the surface-water abstraction of public water supply in the downstream region—maximum licensed withdraw, 50% authorized abstractions, monthly time series with 1% increases in water use, and maximum water withdraw per year based on historical records repeated every year with 1% increases in water use—to estimate the unmet demands and streamflow requirement. This modelling approach can be used in other river basins to manage scenarios of supply and demand.

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“…Inappropriate administration and over-misuse of these water assets affects the entire water resource of a region and the environments that depend on water availability. Excessive groundwater use can cause the elevation of the water table to decline, and can therefore influence surface water bodies associated with springs (Abbas et al 2018). For waterways in which a significant part of the stream is base flow, this can affect the general stream cause the collapse of stream-dependent environments (Pardo and Garcia 2016).…”

Section: Introductionmentioning

confidence: 99%

Simulation of the ground water flow in Karbala Governorate, Iraq

2021

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The investigation region is found in the central part of Iraq within the of Karbala Governorate, where it is located in the western part of the Governorate and Lake Razaza in the north of the region, while in the western and southern part of the region is Anbar Governorate and geographically (43° 10′ 25.7″, 43° 39″ 0.3″) longitude and (32° 10′ 25.7″, 32° 36′ 25.7″) latitude. The area of study is about 2400 Km2. The groundwater modeling system (GMS) v10.3 program was used for the modeling of ground water in the area containing about 22 wells distributed throughout the study area and the discharge of these wells ranges from 7 to 100 l/s and the rate of discharge of these wells up to 36 l/s. The model was initially operated within a steady state and after obtaining a match between the models results with the initial values of groundwater levels, the results of this case were adopted as inputs to run the model within the unsteady state. The model was worked within the sight of the above wells for 3 years and the results of the operation indicate a decrease in groundwater levels ranging from 2 to 21 m distributed uniformly throughout the study area.

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Improving River Flow Simulation Using a Coupled Surface-Groundwater Model for Integrated Water Resources Management

Cited by 17 publications

References 17 publications

Hydroclimatic Impact Assessment Using the SWAT Model in India—State of the Art Review

Hydroclimatic Impact Assessment Using the SWAT Model in India—State of the Art Review

Assessing Climate Change Impact on Water Resources in Water Demand Scenarios Using SWAT-MODFLOW-WEAP

Simulation of the ground water flow in Karbala Governorate, Iraq

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