Hydrological modeling of the pipestone creek watershed using the Soil Water Assessment Tool (SWAT): Assessing impacts of wetland drainage on hydrology

Perez-Valdivia, Cesar; Cade-Menun, Barbara J.; McMartin, Dena W.

doi:10.1016/j.ejrh.2017.10.004

Cited by 21 publications

(14 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Soil albedo was calculated using an equation proposed by Baumer [44]. Soil available water capacity was calculated as the difference between water held at field capacity and water present at wilting point [45]. The weather station is located in approximately the center of the catchment, and records data including: precipitation, air temperature, air humidity, wind speed and direction, and incoming and outgoing solar radiation.…”

Section: Input Datamentioning

confidence: 99%

“…Sensitivity analysis for all these parameters would be exhausting and time-consuming [59]. However, several researchers, have investigated and documented the most important parameters for SWAT model calibration [33,45]. These studies were used as basis for selecting parameters for sensitivity analysis.…”

Section: Sensitivity Analysismentioning

confidence: 99%

“…The P-factor is the percentage of measured data bracketed by the 95PPU while the R-factor is the average thickness of the 95PPU band divided by the standard deviation of the measured data. A P-factor greater than 0.7 and an R-factor of less than 1.5 are loosely suggested as measures of good model performance [45].…”

Section: Uncertainty Analysismentioning

confidence: 99%

“…Groundwater flow and surface runoff components are constantly interacting within a watershed, which means changing one component will influence the others. Due to this interaction, it is common practice during model calibration to parameterize groundwater parameters and surface runoff parameters concurrently [45,71]. However, in our study, the parameters governing groundwater flow and surface runoff were adjusted separately to better understand the model's simulation of flow components.…”

Section: Surface Runoff and Groundwater Flow Calibrationmentioning

confidence: 99%

See 3 more Smart Citations

Multi-Step Calibration Approach for SWAT Model Using Soil Moisture and Crop Yields in a Small Agricultural Catchment

Musyoka

Strauß

Zhao

et al. 2021

Water

View full text Add to dashboard Cite

The quantitative prediction of hydrological components through hydrological models could serve as a basis for developing better land and water management policies. This study provides a comprehensive step by step modelling approach for a small agricultural watershed using the SWAT model. The watershed is situated in Petzenkirchen in the western part of Lower Austria and has total area of 66 hectares. At present, 87% of the catchment area is arable land, 5% is used as pasture, 6% is forested and 2% is paved. The calibration approach involves a sequential calibration of the model starting from surface runoff, and groundwater flow, followed by crop yields and then soil moisture, and finally total streamflow and sediment yields. Calibration and validation are carried out using the r-package SWATplusR. The impact of each calibration step on sediment yields and total streamflow is evaluated. The results of this approach are compared with those of the conventional model calibration approach, where all the parameters governing various hydrological processes are calibrated simultaneously. Results showed that the model was capable of successfully predicting surface runoff, groundwater flow, soil profile water content, total streamflow and sediment yields with Nash-Sutcliffe efficiency (NSE) of greater than 0.75. Crop yields were also well simulated with a percent bias (PBIAS) ranging from −17% to 14%. Surface runoff calibration had the highest impact on streamflow output, improving NSE from 0.39 to 0.77. The step-wise calibration approach performed better for streamflow prediction than the simultaneous calibration approach. The results of this study show that the step-wise calibration approach is more accurate, and provides a better representation of different hydrological components and processes than the simultaneous calibration approach.

show abstract

Section: Input Datamentioning

confidence: 99%

Section: Sensitivity Analysismentioning

confidence: 99%

Section: Uncertainty Analysismentioning

confidence: 99%

Section: Surface Runoff and Groundwater Flow Calibrationmentioning

confidence: 99%

See 2 more Smart Citations

Multi-Step Calibration Approach for SWAT Model Using Soil Moisture and Crop Yields in a Small Agricultural Catchment

Musyoka

Strauß

Zhao

et al. 2021

Water

View full text Add to dashboard Cite

show abstract

“…This model uses mathematical equations to impersonate watershed processes such as hydrology, soil erosion, and the cycle of nutrients on the land. Moreover, the small spatial units are the hydrological response units (HRUs), which contain soil type, land use, and slopes(Perez-Valdivia et al, 2017).…”

mentioning

confidence: 99%

Trend Analysis of River Flow in Langat River Basin Using Swat Model

2022

JETA

View full text Add to dashboard Cite

The increase in population and the human activities in this basin area has led to many water shortage problems. This research was carried out to investigate the impacts of land-use changes and urbanization on water discharge in Langat River Basin using ArcGIS. It was applied using the Soil Water Assessment Tool (SWAT). This research aimed to identify how critical land-use changes and the increment of the population in Langat River Basin could impact the water discharge. The rainfall, humidity, solar, wind speed data from 2010 – 2016 were used for modelling purposes. The results obtained from calibrated results were satisfactory, with the value of the coefficient of determination of 0.63 and the value of Nash-Sutcliffe Efficiency (NSE) of 0.69. The precipitation and river flow pattern observed shows decreasing in the river flow from May to September 2016 and increased in November to December 2016. It can be observed that the river flow decreased due to some factors, and this may be a concerning issue as Langat River Basin is used to supply water to people in Klang Valley. This paper has proven that the GIS technology and Arc SWAT model can simulate the streamflow in Langat River Basin and can be further demonstrated to other basins. The model also can be used for further analysis and for in the future.

show abstract