Understanding the Impact of Human Interventions on the Hydrology of Nile Basin Headwaters, the Case of Upper Tekeze Catchments

Gebremicael, Tesfay Gebretsadkan

doi:10.1201/9780367853167

Cited by 6 publications

(12 citation statements)

References 182 publications

(522 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A combination of human activities including land use/cover change, water abstraction and SWC can modify the low flow of a catchment (Chang et al, ; Li et al, ). SWC activities can cause visible changes in the dry season flow regimes (Gebremicael, ; Mu et al, ; Wang et al, ). Large scale implementations of such interventions can modify the hydrological processes of a catchment by changing the partitioning of the incoming rainfall at the land surface (Gates et al, ).…”

Section: Introductionmentioning

confidence: 99%

Change in low flows due to catchment management dynamics—Application of a comparative modelling approach

Gebremicael

Mohamed

Zaag

et al. 2020

Hydrological Processes

View full text Add to dashboard Cite

Understanding the natural low flow of a catchment is critical for effective water management policy in semi-arid and arid lands. The Geba catchment in Ethiopia, forming the headwaters of Tekeze-Atbara basin was known for its severe land degradation before the recent large scale Soil and Water conservation (SWC) programs. Such interventions can modify the hydrological processes by changing the partitioning of the incoming rainfall on the land surface. However, the literature lacks studies to

show abstract

Section: Introductionmentioning

confidence: 99%

Change in low flows due to catchment management dynamics—Application of a comparative modelling approach

Gebremicael

Mohamed

Zaag

et al. 2020

Hydrological Processes

View full text Add to dashboard Cite

show abstract

“…The Ghba River subbasin is one of the Nile River's principal tributaries. The landscape include hills and highlands in the north and northeast, as well as highlands in the center of the watershed [45,46]. Several rivers cut through the middle highlands before joining the major Tekeze River near Chemey in the southwest [47].…”

Section: Description Of the Study Subbasinmentioning

confidence: 99%

Future potable water supply demand projection under climate change and socioeconomic scenarios: A case of Gshba subbasin, Northern Ethiopia

Gebreyohannes Hiben,

Gebeyehu Awoke,

Adugna Ashenafi

2024

Int. Res. J. multidiscip. Technovation

View full text Add to dashboard Cite

This paper aims to quantify the subbasin’s potable water supply demand forecast from 2023 to 2050 under various scenarios of climate change and socioeconomic development. The variability of the climate and the resulting problems with urbanization threaten the availability of water resources, especially in less developed countries like Ethiopia. Thus, the main objective of this study is showing the necessary to determine the amount of water needed in advance, in order to comply with the availability of water resources within a specified future period under different scenarios. Our indicator-based approach used a multicriteria decision-making technique. Accordingly, several important variables were considered, including climatological, anthropological, demographic, socioeconomic, and economic variables, in addition to water engineering-related factors (e.g. Water losses). The method also considered a number of factors, such as unexpected and extreme temperature changes, and forecasting factors studied by the Ethiopian Ministry of Water and Energy. The projected population in the subbasin is estimated at 2.52 million, so the total projected water supply demand i.e., for domestic, non-domestic, industrial, commercial, public, and institutional is approximately 126.53 MCM/yr by 2050. Our results revealed how changes in both climatic and socioeconomic factors strongly influence future water resource system performance, and this will help the water services provider better prioritize the refurbishment of existing infrastructure and investment in new infrastructure, and more importantly, manage the subbasin effectively by introducing resilient adaptation options.

show abstract

“…Furthermore, the SAI result showed that most of the years exhibited negative anomalies in discharge, indicating a drier period. Moreover, a lot of large and small-scale irrigation schemes are found in Ghba subbasin [86,87], especially in the Agulai and Genfel catchments, which could be directly affected by low water availability during short rainy (MAM). e occurrence of high streamflow variability combined with the expansion of irrigation in the subbasin influences agriculture and crop productivity, which aggravates the prevalence of food insecurity and drought in the subbasin.…”

Section: Conclusion and Recommendationsmentioning

confidence: 99%

Hydroclimatic Variability, Characterization, and Long Term Spacio-Temporal Trend Analysis of the Ghba River Subbasin, Ethiopia

Hiben

Awoke

Ashenafi

2022

Advances in Meteorology

View full text Add to dashboard Cite

Understanding hydroclimatic variability and trend for the past four decades in the Upper Tekeze River basin is significant for future sustainable water resource management as it indicates regime shifts in hydrology. Despite its importance for improved and sustainable water allocation for water supply-demand and food security, varying patterns of streamflow and their association with climate change are not well understood in the basin. The main objective of this study was to characterize, quantify, and validate the variability and trends of hydroclimatic variables in the Upper Tekeze River basin at Ghba subbasin using graphical and statistical methods for homogeneous stations for the time period from 1953 to 2017, not uniform at all stations. The rainfall, temperature, and streamflow trends and their relationships were evaluated using the regression method, Mann–Kendall (MK) test, Spearman’s rho (SR) test, Sen’s slope, and correlation analysis. The analysis focused on rainfall, temperature, and streamflow collected from 11 climate and six hydrostations. For simplicity to discuss the interannual and temporal variability the stations were categorized into two clusters according to their record length, category 1 (1983–2017) and category 2 (1953–2017). About 73% and 27% of the rainfall stations exhibited normal to moderate annual rainfall variability. The MK and SR test showed that most of the significant trends in annual rainfall were no change except in one station decreasing and the test also showed no significant change in temperature except in three stations showed an increasing trend. Overall, streamflow trends and change point timings were found to be consistent among the stations and all have shown a decreasing trend. Changes in streamflow without significant change in rainfall suggest factors other than rainfall drive the change. Most likely the observed changes in streamflow regimes could be due to changes in catchment characteristics of the subbasin. These research results offer critical signals on the characteristics, variability and trend of rainfall, temperature, and streamflow necessary to design improved and sustainable water allocation strategies.

show abstract

Understanding the Impact of Human Interventions on the Hydrology of Nile Basin Headwaters, the Case of Upper Tekeze Catchments

Abstract: This research was conducted under the auspices of the Graduate School for SocioEconomic and Natural Sciences of the Environment (SENSE) CRC Press/Balkema is an imprint of the Taylor & Francis Group, an informa business

Cited by 6 publications

References 182 publications

Change in low flows due to catchment management dynamics—Application of a comparative modelling approach

Change in low flows due to catchment management dynamics—Application of a comparative modelling approach

Future potable water supply demand projection under climate change and socioeconomic scenarios: A case of Gshba subbasin, Northern Ethiopia

Hydroclimatic Variability, Characterization, and Long Term Spacio-Temporal Trend Analysis of the Ghba River Subbasin, Ethiopia

Contact Info

Product

Resources

About