An enhanced SWAT wetland module to quantify hydraulic interactions between riparian depressional wetlands, rivers and aquifers

Rahman, Mohammed Mizanur; Thompson, J. R.; Flower, Roger J.

doi:10.1016/j.envsoft.2016.07.003

Cited by 47 publications

(31 citation statements)

References 90 publications

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“…1(a)). The hydrological behaviour of the Meghna River Basin is generally characterized by the UMRB (63 746 km 2 ) that has its downstream outlet at Bhairab Bazar, approximately 50 km upstream of the confluence of the Padma (Ganges in India) and Meghna rivers (Rahman et al 2016). Based on topographic and climatic characteristics ( Fig.…”

Section: Upper Meghna River Basinmentioning

confidence: 99%

“…Drainage patterns are complex in the lower Sylhet Basin and include the numerous haor wetlands. The deepest portions of the haors, locally called beels, seldom completely dry out and water levels are maintained by exchange with shallow aquifers (Rahman et al 2016). Beels are an important habitat in the dry season for hundreds of fish species and are managed as fisheries by local communities (Miah et al 2017).…”

Section: Figurementioning

confidence: 99%

“…Subsequently, as river flows decline following the monsoon, water drains back towards the rivers (Rahman et al 2016). Further declines in water levels between December and January are driven by evaporation and seepage.…”

Section: Figurementioning

confidence: 99%

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Hydrological impacts of climate change on rice cultivated riparian wetlands in the Upper Meghna River Basin (Bangladesh and India)

Rahman

Thompson

Flower

2019

Hydrological Sciences Journal

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Riparian depressional wetlands (haors) in the Upper Meghna River Basin of Bangladesh are invaluable agricultural resources. They are completely flooded between June and November and planted with Boro rice when floodwater recedes in December. However, early harvest period (April/May) floods frequently damage ripening rice. A calibrated/validated Soil and Water Assessment Tool for riparian wetland (SWATrw) model is perturbed with bias free (using an improved quantile mapping approach) climate projections from 17 general circulation models (GCMs) for the period 2031-2050. Projected mean annual rainfall increases (200-500 mm per 7-10%). However, during the harvest period lower rainfall (21-75%) and higher evapotranspiration (1-8%) reduces river discharge (5-18%) and wetland inundation (inundation fraction declines of 0.005-0.14). Flooding risk for Boro rice consequently declines (rationalized flood risk reductions of 0.02-0.12). However, the loss of cultivable land (15.3%) to increases in permanent haor inundation represents a major threat to regional food security.

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Section: Upper Meghna River Basinmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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Hydrological impacts of climate change on rice cultivated riparian wetlands in the Upper Meghna River Basin (Bangladesh and India)

Rahman

Thompson

Flower

2019

Hydrological Sciences Journal

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“…However, excess water inside the polders needs to be drained out when heavy rainfall occurs. In this case, the polders are providing temporary storages and in turn attenuate/delay peak flows further downstream (Gao & Han, ; Mo, ; Rahman, Thompson, & Flower, ; van Ek et al, ). Furthermore, irrigation activities inside the polders depend largely on water supplied from the outer rivers during the rice‐growing season.…”

Section: Overview Of Polders In the Plain River Network Region Of Chinamentioning

confidence: 99%

Development of a polder module in the SWAT model: SWATpld for simulating polder areas in south‐eastern China

Lai

Deng³

et al. 2018

Hydrological Processes

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Polders are one of the most common artificial hydrological entities in the plain river network regions of China. Due to enclosed dikes, manual drainage, and irrigation intake operations, polders have had a significant impact on the hydrological processes of these areas. Distributed hydrological models are effective tools to understand and reproduce the hydrological processes of a watershed. To date, however, few models are able to simulate the drainage and irrigation intake interactions of polders at a watershed scale. This study develops a modified version of the Soil and Water Assessment Tool (SWAT) model, which is designed to better represent polders (SWATpld). The SWATpld model simulates drainage and irrigation intake processes by calculating the excess-water storage in the inner rivers and irrigation schedule for paddy rice in the polder.Both SWAT and SWATpld models were tested for the Liyang watershed. SWATpld outperformed SWAT in simulating the daily discharge and intake of the experimental polder and predicting the monthly peak flow at the outlet of the Liyang watershed, which suggests that the modified model simulates the hydrological responses of the study watershed with polder operations more realistically than the original SWAT model does. Further evaluation at various locations and in various climate conditions would increase the confidence of this model.

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“…An aquatic ecological model was developed using the STELLA (Structural Thinking, Experiential Learning Laboratory with Animations) modeling software, demonstrating that the simulation precision of the model is sufficient to reflect the trend of changes in the aquatic ecological indexes . Jones, Hawkins, et al (2016) concluded that the use of model- thus, SWATrw integrates a more flexible wetland morphometric formula to model wetland-river interaction (Rahman et al, 2016).…”

Section: Wetland Modelingmentioning

confidence: 99%

Wetlands for Wastewater Treatment

Castillo-Valenzuela¹,

Martinez‐Guerra²,

Gude³

2017

Water Environment Research

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This article provides an update on the wastewater treatment technologies, which utilize natural processes or passive components to remove various pollutants. The focus is on the wetland systems and their applications in wastewater treatment (as an advanced treatment unit or a decentralized system), and nutrient and pollutant removal (heavy and hazardous metals, industrial and emerging pollutants including pharmaceutical and personal care products and endocrine disrupting chemicals). A summary of studies involving the effects of vegetation, wetland design and operation, modeling, hybrid and innovative systems, storm water treatment, sludge treatment, landfill leachate treatment, and pathogen removal is also included.

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An enhanced SWAT wetland module to quantify hydraulic interactions between riparian depressional wetlands, rivers and aquifers

Cited by 47 publications

References 90 publications

Hydrological impacts of climate change on rice cultivated riparian wetlands in the Upper Meghna River Basin (Bangladesh and India)

Hydrological impacts of climate change on rice cultivated riparian wetlands in the Upper Meghna River Basin (Bangladesh and India)

Development of a polder module in the SWAT model: SWATpld for simulating polder areas in south‐eastern China

Wetlands for Wastewater Treatment

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