A Long–Term Response-Based Rainfall-Runoff Hydrologic Model: Case Study of The Upper Blue Nile

Keshta, Eatemad; Gad, Mohamed A.; Amin, Doaa

doi:10.3390/hydrology6030069

Cited by 6 publications

(3 citation statements)

References 25 publications

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“…It is often used for estimating peak runoff from impervious areas, and it is most accurate in small drainage basins [45,47,48] but is rarely used in the estimation of direct runoff depth or volume. On the other hand, the modified rational method is the simplest method to estimate infiltration and runoff with precise physical characteristics [49]. Wang et al [50] developed a modified rational method for arid-region runoff estimation.…”

Section: Modified Rational Methodsmentioning

confidence: 99%

Integrated Hydrological-Hydraulic Model for Flood Simulation in Tropical Urban Catchment

et al. 2019

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In recent decades, Malaysia has become one of the world’s most urbanized nations, causing severe flash flooding. Urbanization should meet the population’s needs by increasing the development of paved areas, which has significantly changed the catchment’s hydrological and hydraulic characteristics. Therefore, the frequency of flash flooding in Malaysia’s urban areas has grown year after year. Numerous techniques have been used, including the statistical approach, modeling, and storm design methods, in flood simulation. This research integrated hydrology and hydraulic models to simulate the urban flood events in the Aur River catchment. The primary objective is to determine water level and forecast peak flow based on hydrological assessment in the drainage system using XPSWMM software. The rainfall data for 60 min was used for this study in the hydrological analysis by obtaining an intensity-duration-frequency curve and peak flow value (Q peak). XPSWMM is used to simulate the response of a catchment to rainfall events in which runoff, water depth profile, and outflow hydrograph are obtained. Peak runoff is also obtained from the modified rational method for validation purposes. The proposed method was verified by comparing the result with the standard method. This is essential to identify flash flooding, which can lead to efficient flood mitigation planning and management in the urban catchment. The increase in residential areas results in the alteration of time of concentration, water quantity, and flow rate. Thus, to mitigate present and future problems, the effects of urbanization on water resources and flood should be analyzed.

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Section: Modified Rational Methodsmentioning

confidence: 99%

Integrated Hydrological-Hydraulic Model for Flood Simulation in Tropical Urban Catchment

et al. 2019

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“…For this research, the medium and long-term assessment of water resources is of specific relevance and a tool of the HEC HMS model is highly suitable for this purpose. This method is known as Soil Moisture Accounting (SMA) and involves several successive balances of the different layers in which water can be stored and consumed within the water-soil-plant cycle [44,58]. In addition, it is possible to describe the snow storage and melting of snow, a process of huge hydrological relevance in mountainous areas [34].…”

Section: Hec-hmsmentioning

confidence: 99%

Water resources availability in southern Europe at the basin scale in response to climate change scenarios

2022

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Background Climate and the hydrological cycle are closely linked; therefore, in the most likely scenarios of climate change, the increase in temperature may influence the expected variation in precipitation variation but will also have a major impact on the availability of water resources in the world in general and in southern Europe in particular. As a case study, it was applied to a western Mediterranean basin altered since antiquity. For this study, the medium and long-term water resources were assessed. The known method Soil Moisture Accounting (SMA) has been used. Mainly because due to its great hydrological relevance in mountainous areas, the accumulation and melting of snow. The aim of this research to assess the evolution of runoff distribution and its impact on available water resources under different climate change scenarios. Results It was observed clearly a decreasing of precipitation and evapotranspiration and otherwise an increasing of temperature. The major climatic effect is that at present, runoff is already much lower than that predicted in the different basin hydrological policy. Specifically for the studied basin, the available resources are expected to decrease by 50% with respect to the current ones, affecting mainly the current agricultural land uses, which should be reconsidered in the medium term. Conclusions It can be concluded that surface water use policy was calculated with climatic assumptions that are no longer met. Consequently, this research reveals the usefulness of basin-scale climate studies in southern Europe to determine the water resources availability in the near future.

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“…In addition, the geo-morphological conditions and climate change/variability have further exacerbated freshwater availability and thus increases its demand, both temporally and spatially [1][2][3]. Globally, climate change has been putting pressure on the problem, modifying hydrological responses and shifts in time of rainfall-runoff responses [1,4,5]. Consequently, it has been documented that about two-thirds of the world's population have been, or will be, suffering from water shortage or unavailability [1,6,7].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Surface Irrigation Potential of the Dhidhessa River Basin, Ethiopia

et al. 2020

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Assessing available water resources and their potential for irrigation water use is vital for sustainable agricultural development and planning. This is particularly of interest in developing countries like Ethiopia, where a small portion of largely accessible land for surface irrigation applications has been utilized, despite the majority of the population relying on agricultural productivity. This study utilized the Dhidhessa River Basin (Ethiopia) as a case study and analyzed the main challenges to balance the sustainable water resources utilization and enhance agricultural productivity of the basin. The study mainly focused on estimating the available water resources and their potential for surface irrigation water use in the basin. This was achieved by utilizing Geographic Information System (GIS)-based tools, a hydrological Soil and Water Assessment Tool (SWAT) model, and a Crop Water and Irrigation Requirements Program of FAO (CROPWAT) model. While the SWAT estimated the water availability in the basin, GIS-tools such as Model Builder were used to map the irrigation potential of the basin. For irrigation water potential assessment, we selected six crops (cabbage, maize, tomato, pepper, groundnut and sugarcane) and estimated their irrigation water requirements using the CROPWAT model. We developed the SWAT model for the period from 1986 to 2012 using the available hydro-meteorological and geo-spatial data. Due to many parameters used in the model, we first performed a parameter sensitivity analysis and identified the most essential/sensitivity parameters via Sequential Uncertainty Fitting-II (SUFI-2). The identified sensitive parameters were subsequently used for model calibration (1989–2000) and validation (2001–2012) procedures achieved via SUFI-2. SWAT was able to reproduce the observed monthly streamflow values with a coefficient of determination (R2) and Nash-Sutcliffe Coefficient (NSE) of 0.85 and 0.87 for the calibration period and 0.91 and 0.89 for the validation period, respectively. The findings generally indicated a “good” performance of the model in simulating the hydrology. The annual available water of the basin is 9.26 billion cubic meters (BCM) whereas the 70% and 80% dependable flow is 7.56 and 6.97 BCM, respectively. Based on the Model Builder of ArcGIS, the SWAT estimated available water can potentially irrigate an area of 259,028 ha for slope less than 8%, 643,162 ha for slopes less than 15% and 1,023,581 ha for slopes less than 30%. Moreover, the irrigation water requirements were calculated by the CROPWAT model for the six selected crops indicated that although the need for irrigation water varies depending on the season, the potential irrigation area of the Dhidhessa River Basin is greater than its irrigated land. Therefore, it is concluded that the basin’s surface irrigation systems need to be expanded to enhance the agricultural productivity and improve the livelihood of the basin’s communities and similar basins elsewhere.

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A Long–Term Response-Based Rainfall-Runoff Hydrologic Model: Case Study of The Upper Blue Nile

Cited by 6 publications

References 25 publications

Integrated Hydrological-Hydraulic Model for Flood Simulation in Tropical Urban Catchment

Integrated Hydrological-Hydraulic Model for Flood Simulation in Tropical Urban Catchment

Water resources availability in southern Europe at the basin scale in response to climate change scenarios

Assessment of Surface Irrigation Potential of the Dhidhessa River Basin, Ethiopia

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