Pasture BMP effectiveness using an HRU-based subarea approach in SWAT

Sheshukov, Aleksey Y.; Douglas-Mankin, Kyle R.; Sinnathamby, Sumathy; Daggupati, Prasad

doi:10.1016/j.jenvman.2015.10.023

Cited by 23 publications

(13 citation statements)

References 20 publications

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“…In either case, this is a tedious process when performed manually, and thus it is often accompanied by consideration of a limited parameter space. Most examples in the literature apply a stepwise, iterative process to the calibration of a single output variable such as in ADAPT (Anand et al, 2007), BASINS/HSPF (Duda et al, 2012), RZWQM2 (Ma et al, 2012), and SWAT (Maski et al, 2008;Sheshukov et al, 2015). Calibration of the integrated system model versions of DRAINMOD, i.e., DRAINMOD-FOREST (Tian et al, 2012) and DRAINMOD-DSSAT (Negm et al, 2014), is conducted using a stepwise, iterative approach applied to calibrate multiple variables.…”

Section: Stepwise Iterative Limited Parameter Spacementioning

confidence: 99%

A Recommended Calibration and Validation Strategy for Hydrologic and Water Quality Models

2015

Trans. ASABE

167

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Hydrologic and water quality (H/WQ) models are widely used to support site-specific environmental assessment, design, planning, and decision making. Calibration and validation (C/V) are fundamental processes used to demonstrate that an H/WQ model can produce suitable results in a particular application. However, the lack of comprehensive guidelines has led to the use of ad hoc, inconsistent, and incomplete C/V processes, which have made it difficult to interpret the myriad of published modeling studies, reduced the utility of many modeling applications, and slowed the advancement of H/WQ modeling. The objective of this article is to provide a generalized structure and process to assist modelers in developing a C/V strategy for H/WQ modeling applications. These best practice recommendations were developed based on an expansive review of the modeling literature, including a special collection of articles on H/WQ model calibration, validation, and use, as well as extensive discussion and debate among the authors. The model C/V recommendations include careful consideration, execution, and documentation of the following elements: (1) goals of model use, (2) data and parameters used in C/V, and (3) model C/V processes. Considerations in element 3 include the warm-up period, C/V strategy complexity, C/V process staging, spatiotemporal allocation of C/V comparison data, manual vs. automatic C/V, and additional diagnostics. Notable examples from the literature are provided for each strategy element. The comprehensive C/V strategy described herein will allow for better interpretation of future modeling studies, improved utility of modeling applications, and more systematic advancement of H/WQ models.

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Section: Stepwise Iterative Limited Parameter Spacementioning

confidence: 99%

A Recommended Calibration and Validation Strategy for Hydrologic and Water Quality Models

2015

Trans. ASABE

167

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“…Many researchers use BMPs to conserve agricultural and pastoral lands. For example, the effects of two BMP systems on water quality in a livestock pasture were discussed by Sheshukov et al [46]. Smith et al [47] presented BMPs to conserve agricultural lands.…”

Section: Best Management Practices (Bmps)mentioning

confidence: 99%

Hydrological Modeling and Runoff Mitigation in an Ungauged Basin of Central Vietnam Using SWAT Model

et al. 2017

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Abstract:The A-Luoi district in Thua Thien Hue province of Vietnam is under extreme pressure from natural and anthropogenic factors. The area is ungauged and suffering from data scarcity. To evaluate the water resources availability and water management, we used Soil and Water Assessment Tools (SWAT). A multi-approach technique was used to calibrate the hydrological model. The model was calibrated in three time scales: daily, monthly and yearly by river discharge, actual evapotranspiration (ETa) and crop yield, respectively. The model was calibrated with Nash-Sutcliffe and R 2 coefficients greater than 0.7, in daily and monthly scales, respectively. In the yearly scale, the crop yield inside the model was calibrated and validated with Root Mean Square Error (RMSE) less than 2.4 ton/ha. The water resource components were mapped temporally and spatially. The outcomes showed that the highest mean monthly surface runoff, 323 to 369 mm, between September and November, resulted in extreme soil erosion and sedimentation. The monthly average of actual evapotranspiration was the highest in May and lowest in December. Furthermore, installing "Best Management Practices" (BMPs) reduced surface runoff in agricultural lands. However, using event-based hydrological and hydraulic models in the prediction and simulation of flooding events is recommended in further studies.

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“…With the application and development of model research, the SWAT model has gradually become an important tool for simulating runoff processes, NPS pollution loads, spatio-temporal characteristics, and critical source areas and evaluating different measures at the basin scale [14]. Best Management Practices (BMPs) were a series of measures proposed by the United States in the mid-1970s to generate environmentally beneficial natural processes such as hydrology, soil erosion, ecology, and nutrient cycling in river basins, to avoid pollution in water environments of the river basin caused by agricultural production [15][16][17]. SWAT models were proposed to evaluate the effects of BMPs.…”

Section: Introductionmentioning

confidence: 99%

Non-Point Source Pollution Simulation and Best Management Practices Analysis Based on Control Units in Northern China

Ding

Dong

Zhao

et al. 2020

IJERPH

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Non-point source (NPS) pollution simulation in control units can identify critical pollution source areas and make Best Management Practices (BMPs) more effective for the responsible parties. In this study, the control unit division method is introduced, and the spatial and temporal distribution characteristics of NPS pollution in the Guishui River Basin of Northern China are analyzed using the Soil Water Assessment Tool (SWAT) model. In addition, five BMP scenarios were designed for environmental and cost-benefit analyses. The results show that the loss of total nitrogen (TN) and total phosphorus (TP) is concentrated in the rainy season, and the loss of TN and TP is mainly distributed in the middle and lower reaches of the main stream of the Guishui River. This area accounts for 22.34% of the basin area. The vegetated filter strips (VFS) scenario had the best environmental benefits with average TN and TP reduction efficiencies of 63.4% and 62.6%, respectively. The Grassed Waterway was the most cost-effective scenario measure, cost-benefit (CE) values of TN and TP were 1798.13 g/€ and 601.56 g/€. Generally, research on NPS pollution using control units can more clearly identify the critical source areas of pollution than other methods, and provides technical support for watershed management decision makers.

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Pasture BMP effectiveness using an HRU-based subarea approach in SWAT

Cited by 23 publications

References 20 publications

A Recommended Calibration and Validation Strategy for Hydrologic and Water Quality Models

A Recommended Calibration and Validation Strategy for Hydrologic and Water Quality Models

Hydrological Modeling and Runoff Mitigation in an Ungauged Basin of Central Vietnam Using SWAT Model

Non-Point Source Pollution Simulation and Best Management Practices Analysis Based on Control Units in Northern China

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