Hydrological modeling for watershed management

Prasad, Vikram; Yousuf, Abrar; Sharma, Navneet

doi:10.51396/anrcm.1.1.2020.29-34

Cited by 5 publications

(4 citation statements)

References 19 publications

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“…Hydrological models, developed based on mathematical principles, have become an important tool to quantitatively understand hydrological processes and predict their responses under changing environments (Mirchi et al, 2010; Prasad et al, 2020). During the last decade, the rapid development of computing and information technology has greatly improved the simulation efficiency, accuracy, and capability of the models.…”

Section: Introductionmentioning

confidence: 99%

A modified SWAT model for mechanistic simulation of soil water‐salt transport and the interactions with shallow groundwater

Mu,

Xun,

Gao

et al. 2023

Hydrological Processes

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Current hydrological models still face difficulties in accurately simulating vadose zone (VZ) hydrological processes in arid watersheds with shallow groundwater environments. Therefore, this article introduces a new mechanistic VZ module coupled with an improved groundwater‐balance (GWB) module to enhance the capabilities of the well‐known Soil Water Assessment Tools (SWAT) model. The main improvements and features of the modified SWAT model (M‐SWAT) include: a numerical VZ module to accurately simulate soil water‐salt transport under variably saturated conditions by solving the head‐formed Richards' equation and advection‐dispersion equation; a GWB module (on a sub‐basin scale for shallow aquifer) coupled with VZ module by proposing an effective way of boundary information exchanges; and a more reasonable water‐salt stress functions (i.e., based on matric head and osmotic head) to calculate root water uptake and plant growth. The M‐SWAT was then tested and evaluated with two‐year observation data from the Yangchang canal command area (YCA, an experimental site) and the Jiyuan Irrigation System (Jiyuan, region‐scale), located in the arid upper Yellow River basin of northwest China. The model produced a good agreement between the simulated and observed data in both calibration and validation with sufficiently small root mean square error (RMSE). The determination coefficient (R2) was greater than 0.51, 0.36, and 0.87 in simulating the soil water‐salt dynamics, groundwater depth fluctuations, and leaf area index development, respectively. Case testing also proved that the M‐SWAT had sufficient computational efficiency and stability for regional application. Further comparisons with previous studies indicated that the M‐SWAT could more accurately and rationally simulate the soil water‐salt dynamics and their interactions in arid watersheds with shallow groundwater tables.

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Section: Introductionmentioning

confidence: 99%

A modified SWAT model for mechanistic simulation of soil water‐salt transport and the interactions with shallow groundwater

Mu,

Xun,

Gao

et al. 2023

Hydrological Processes

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“…These data are scrutinized to draw informed conclusions and facilitate decisionmaking vis-à-vis hydrological phenomena. The watershed is a valuable entity for physical assessments and a pertinent socio-economic-political facet in implementing management strategies [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Analyzing the primary hydrological components (rainfall and discharge) within the context of Cipunagara Watershed management, West Java

Nurhayati,

Marselina,

Fuad

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The Cipunagara River Basin is a component of the Citarum Watershed, necessitating a thorough analysis of hydrological data particularly rainfall and discharge for effective management. The watershed spans a moderate area of 1,363 km2 across three administrative divisions: Subang Regency, Indramayu Regency, and a segment of Sumedang Regency. Hydrological data analysis is imperative in watershed management. This study aims to analyze the key hydrological elements relevant to Cipunagara Watershed management. Rigorous consistency and homogeneity tests were conducted on rainfall data from each station. Changes in watershed flow patterns were scrutinized by examining shifts in runoff coefficient values and base flow magnitudes. The upward trend in runoff during the rainy season and the corresponding decline in base flow throughout the dry season may be attributed to land use alterations within the Cipunagara Watershed zone. To proactively address drought concerns in watershed management, the study calculated the 80% dependable flow to assess water availability during arid months, yielding an 80% dependable flow rate of 16.25 m3/s for the Cipunagara Watershed.

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“…A watershed is a hydrological system where the input collects rainwater and is processed in the watershed to produce river flow discharge (Prasad et al, 2020;Winkler et al, 2010). If the processing of the watershed is disrupted, such as reduced water absorption, it will cause an increase in surface runoff resulting in flooding during the rainy season and a decrease in river discharge and even drought in the dry season Wang et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Wanggu Watershed Carrying Capacity on Water System Indicators in Southeast Sulawesi, Indonesia

2023

indones. j. env. man. sus.

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The water system or hydrological indicators determine the good and bad of a watershed’s carrying capacity. The hydrological indicators include discharge fluctuations, annual flow coefficient, sediment load, flood frequency, and water use index. The purpose of this study was to evaluate the carrying capacity of the Wanggu watershed based on hydrological indicators. The method used is the score and weight method for all hydrological indicator data in accordance with the watershed evaluation guidelines for hydrological indicators. The research data is sourced from primary data and secondary data. Primary data comes from direct observation, while secondary data comes from agencies related to this research. Data analysis using Microsoft Excel in monthly and annual data analysis by producing tables and figures. The results of this study indicate that fluctuations in discharge or the regime coefficient of the Wanggu River Basin are 96.45 which are classified as high, as well as erosion and surface runoff, namely sediment load conditions of 19.73 which are also included in the high category. While the value of the annual flow coefficient is 0.32, the average frequency of flooding every year occurs once in two years and the water use index is 0.69. The three parameters are categorized as being in the middle class. From the accumulated weights and scores of all water system indicator parameters, a value of 111.25 is included in the bad class category. So the Wanggu watershed has a poor carrying capacity value from the water management indicator.

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Hydrological modeling for watershed management

Cited by 5 publications

References 19 publications

A modified SWAT model for mechanistic simulation of soil water‐salt transport and the interactions with shallow groundwater

A modified SWAT model for mechanistic simulation of soil water‐salt transport and the interactions with shallow groundwater

Analyzing the primary hydrological components (rainfall and discharge) within the context of Cipunagara Watershed management, West Java

Evaluation of Wanggu Watershed Carrying Capacity on Water System Indicators in Southeast Sulawesi, Indonesia

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