Evaluation of Water Supply Capacity of a Small Forested Basin Water Supply Facilities Using SWAT Model and Flow Recession Curve

Choi, Jung-Ryel; Kim, Byung-Sik; Kang, Dong-Ho; Chung, Il-Moon

doi:10.1007/s12205-022-1075-4

Cited by 6 publications

(2 citation statements)

References 24 publications

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“…Due to their simplicity, hydrograph recessions are widely used in watershed hydrology (Smakhtin, 2001). This methodology has been successfully used on daily streamflow time series (Choi et al, 2022; Kottegoda et al, 2000; Santos et al, 2018), and thus it was preferred in our analysis. For analyses comparing precipitation events of different lengths and across different sites, we normalized total event P ( Q or ET ) by the length of the event, hereafter referred to as normalized event values.…”

Section: Methodsmentioning

confidence: 99%

Storage variability controls seasonal runoff generation in catchments at the threshold between energy and water limitation

Grande

Zimmer

Mallard

2022

Hydrological Processes

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Annual water balance calculations may elide intra‐annual variability in runoff generation, which could limit understanding of the similarities and differences between water‐ and energy‐limited catchments. This may be especially important in comparisons between catchments close to the threshold between water‐ and energy‐limitation. For this study, we examined runoff generation as a function of catchment storage in four watersheds, with focus on two that exist close to these thresholds, to identify how year‐to‐year variability in storage that results in intra‐annual variations of runoff generation efficiency. Specifically, we focused on one energy‐limited catchment in the humid subtropics and one water‐limited catchment in a Mediterranean climate. We used measured and calculated daily water balance components to calculate variations in the relative magnitude of daily storage. We isolated precipitation events to draw connections between storage and runoff generation at intra‐annual scales and compared our findings to the same metrics in two intensely energy‐limited landscapes. We observed distinct stages in daily storage across water years in watersheds at the threshold, where systems experienced wet‐up, plateau, and dry‐down stages. During the wet‐up, precipitation was partitioned to storage and runoff ratios (RR) were low. In the plateau, storage was filled and precipitation was partitioned to runoff, causing high RRs. During the dry‐down, storage decreased as precipitation was partitioned to evapotranspiration and runoff, causing low RRs. The critical role of evapotranspiration during the growing season resulted in relatively higher RRs during the wet‐up than during the dry‐down for a given storage value. Thus, the same storage amount was partitioned to evapotranspiration or runoff differently throughout the year, depending on the storage stage. Despite their different positions on opposite sides of the threshold, the similarity between the two focus catchments suggests a potential characteristic behaviour of systems at the threshold common to both humid and semi‐arid landscapes.

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Section: Methodsmentioning

confidence: 99%

Storage variability controls seasonal runoff generation in catchments at the threshold between energy and water limitation

Grande

Zimmer

Mallard

2022

Hydrological Processes

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“…Their analyzed data from three LULC scenarios unveiled an increase in cropland, grassland, and urban areas, and it created an augmentation in the river runoff within the study catchment. This model was also employed to weigh the impact of LULC alterations in deep recharge [24][25][26][27], water balance [7,28], water yield [9,29], sediment yield [3], ET [30,31], drought analysis [32][33][34], and surface runoff [8,23,35]. Therefore, in previous studies and in further research, the SWAT model has demonstrated its effectiveness in appraising hydrological reactions to LULC transformation scenarios.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Hydrological Responses to Land Use and Land Cover Changes in Forest-Dominated Watershed Using SWAT Model

Ware,

Chang,

Lee

et al. 2024

Water

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Recognizing how human activities affect hydrological systems is vital for the sustainable preservation and effective management of water resources in the watershed. Hence, this paper focuses on the hydrological response to land use and land cover (LULC) change scenarios in the Anyang watershed, South Korea. We obtained LULC data maps for the years 2000, 2013, and 2022 from the local government, revealing significant changes over the years. Agricultural lands experienced a 6.2% increase from 2000 to 2022, and pastureland expanded by 8.67% over two decades. The SWAT model was utilized to assess the impact of LULC on the hydrological components of the study watershed. Model calibration and validation for each LULC change were carried out using the SWAT-CUP program, considering the recorded streamflow information of the region. An excellent agreement was reached between the simulated and measured streamflow in both the calibration and validation stages under various LULC conditions. The Nash–Sutcliffe model efficiency (NSE), the objective function, demonstrated values of 0.9, 0.89, and 0.89 during the calibration for 2000, 2013, and 2022, respectively, in the LULC scenario, while for the validation, we obtained values of 0.82, 0.78, and 0.80 for 2000, 2013, and 2022, respectively. Our findings indicate that the surface runoff rise contributed much to the water yield increase over the two decades compared to the other components in terms of the water yield, while the contribution of evapotranspiration (ET) to the watershed hydrological cycle declined by 1.66% from 2000 to 2022. The southeastern sub-basin part showed a high groundwater recharge distribution due to agricultural land, rice area, and forest area changes.

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Assessment of regional drought risk coupled with drought response capacity considering water supply systems

Kim,

Lee,

Kim

2023

Stoch Environ Res Risk Assess

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Evaluation of Water Supply Capacity of a Small Forested Basin Water Supply Facilities Using SWAT Model and Flow Recession Curve

Cited by 6 publications

References 24 publications

Storage variability controls seasonal runoff generation in catchments at the threshold between energy and water limitation

Storage variability controls seasonal runoff generation in catchments at the threshold between energy and water limitation

Assessment of Hydrological Responses to Land Use and Land Cover Changes in Forest-Dominated Watershed Using SWAT Model

Assessment of regional drought risk coupled with drought response capacity considering water supply systems

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