GIS based water balance components estimation in northern Ethiopia catchment

Gebru, Teklebirhan Arefaine; Tesfahunegn, Gebreyesus Brhane

doi:10.1016/j.still.2019.104514

Cited by 18 publications

(6 citation statements)

References 43 publications

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“…The results indicated that groundwater recharge was more affected by land-use than soil as the standard deviation of the groundwater recharge for the different land-use classes is higher than the standard deviation of groundwater recharge for the different soil textures (Table 4 ). Similar findings of groundwater recharge variability with soil textures and LULC classes to the present finding have been reported for the Guishui River Basin, China by Pan et al 51 , for the San Pedro watershed, USA and Mexico, by Nie et al 52 , for Flanders (Belgium) by Zomlot et al 53 and a catchment in northern Ethiopia by Kahsay et al 54 and Gebru and Tesfahunegn 55 . A higher evapotranspiration rate was observed in sites where the predominant cover is a water body, mudflat, grassland, and forest with clay loam and clay soils that could be due to high transpiration demand of vegetation cover and water availability of soil type (Table S4 ).…”

Section: Resultssupporting

confidence: 91%

Integrated assessment of the impact of land use changes on groundwater recharge and groundwater level in the Drava floodplain, Hungary

Salem

Abduljaleel

Dezső

et al. 2023

Sci Rep

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Land-use/land-cover (LULC) change is considered a key human factor influencing groundwater recharge in floodplains. Without accurate estimations, the impact of LULC change on water balance components may be either significantly understated or exaggerated. This paper assesses the impacts of LULC changes from 1990 to 2018 on water balance components and groundwater levels of the Drava floodplain, Hungary, where human interference has led to a critical environmental situation. In this study, a spatially-distributed water balance model (WetSpass-M), and a groundwater flow model (MODFLOW-NWT) were integrated to assess the impacts of LULC changes. The moderate expansion of built-up areas increased surface runoff, while the afforestation of arable land and meadows and the overgrowth of bare mudflats with willow shrubs increased evapotranspiration. As a consequence, total annual groundwater recharge decreased by 5.3 × 107 m3 in the floodplain with an average of 335 mm year−1 and 317 mm year−1 in 2012 and 2018, respectively. Moreover, an average groundwater level decline by 0.1 m is observed in the same period. Declined groundwater recharge, increased runoff, and evapotranspiration exerted a negative effect on water resources in the Drava basin. The approach tested in this paper allows temporal and spatial estimation of hydrological components under the changes of LULC, providing quantitative information for decision-makers and stakeholders to implement efficient and sustainable management of water resources in the Drava floodplain. The provided integrated model is also applicable to regionally.

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Section: Resultssupporting

confidence: 91%

Integrated assessment of the impact of land use changes on groundwater recharge and groundwater level in the Drava floodplain, Hungary

Salem

Abduljaleel

Dezső

et al. 2023

Sci Rep

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“…Moreover, the present findings indicate that LULC variability affects the spatial distribution of surface runoff more than the impact of soil type in the basin. Similar results of the impacts of LULC classes and soil textures on surface runoff variability are reported by [74][75][76].…”

Section: Water Balance Components Under Different Land Use/land Cover...supporting

confidence: 83%

Spatial-Temporal Water Balance Components Estimation Using Integrated GIS-Based Wetspass-M Model in Moulouya Basin, Morocco

Amiri

Salem

Ghzal

2022

IJGI

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The Moulouya basin in Morocco is one of many river basins around the world that are regulated with physical flow control, a range of regulations and storage structures. The water budget of the basin is unbalanced; the available water resources are insufficient for agricultural productivity, nature conservation and ecosystem services. This study evaluates spatial and temporal distributions of actual evapotranspiration, groundwater recharge and surface runoff for the period 2000–2020 using the WetSpass-M model in the Moulouya basin, Morocco. The WetSpass-M model’s input data are created in grid maps with the ArcGIS tool. They include monthly meteorological parameters (e.g., temperature, wind speed, rainfall,), soil map, land cover, topography, slope and groundwater depth. A good correlation has been observed between the simulated groundwater recharge and base flow, with the value of R2 = 0.98. The long-term spatial and temporal average annual precipitation of 298 mm is distributed as 45 mm (15.1%) groundwater recharge and 44 mm (14.8%) surface runoff, while 209 mm (70.1%) is lost through evapotranspiration. The simulated results showed that the average groundwater recharge of 15.1 mm (30%) falls during the summer and spring seasons, while the remaining 29.5 mm (70%) occurs during the winter and autumn seasons. Annually, 2430 million m3 of water recharges to the groundwater system from the rainfall for the entire basin. The study’s findings would help local stakeholders and policymakers in developing sustainable and effective management of available surface water and groundwater resources in the Moulouya basin.

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“…Methods and approaches of the geospatial analysis, data processing, modelling and visualisation in Earth sciences are diverse [BEYENE et al 2018;GEBRU, TESFAHUNEGN 2020;KLAUČO et al 2013;LINDH, LEMENKOVA 2021;SCHENKE, LEMENKOVA 2008;SUETOVA et al 2005;VILLARREAL-GUERRERO et al 2020]. However, the principal difference of the GMT from the traditional GIS consists in script-based philosophy which enables smooth repeatability of the workflow.…”

Section: General Informationmentioning

confidence: 99%

Journal of Water and Land Development

Lemenkova

2022

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In the present research, a scripting cartographic technique for the environmental mapping of Ethiopia using climate and topographic datasets is developed. The strength of the Generic Mapping Tools (GMT) is employed for the effective visualisation of the seven maps using high-resolution data: GEBCO, TerraClimate, WorldClim, CRUTS 4.0 in 2018 by considering the solutions of map design. The role of topographic characteristics for climate variables (evapotranspiration, downward surface shortwave radiation, vapour pressure, vapour pressure deficit and climatic water deficit) is explained. Topographic variability of Ethiopia is illustrated for geographically dispersed and contrasting environmental setting in its various regions: Afar, Danakil Depression, Ethiopian Highlands, Great Rift Valley, lowlands and Ogaden Desert. The relationships between the environmental and topographic variables are investigated with aid of literature review and the outcomes are discussed. The maps are demonstrated graphically to highlight variables enabling to find correlations between the geographic phenomena, their distribution and intensity. The presented maps honor the environmental and topographic data sets within the resolution of the data. Integration of these results in the interpretation maps presented here brings new insights into both the variations of selected climate variables, and the topography of Ethiopia.

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GIS based water balance components estimation in northern Ethiopia catchment

Cited by 18 publications

References 43 publications

Integrated assessment of the impact of land use changes on groundwater recharge and groundwater level in the Drava floodplain, Hungary

Integrated assessment of the impact of land use changes on groundwater recharge and groundwater level in the Drava floodplain, Hungary

Spatial-Temporal Water Balance Components Estimation Using Integrated GIS-Based Wetspass-M Model in Moulouya Basin, Morocco

Journal of Water and Land Development

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