A5054384559- Hydrology and Watershed Management Studies
- Soil erosion and sediment transport
- Hydrology and Sediment Transport Processes
- Water resources management and optimization
- Irrigation Practices and Water Management
- Flood Risk Assessment and Management
- Fish Ecology and Management Studies
- Aquatic Ecosystems and Biodiversity
- Rangeland Management and Livestock Ecology
- Hydropower, Displacement, Environmental Impact
- Groundwater and Watershed Analysis
- Transboundary Water Resource Management
- Groundwater and Isotope Geochemistry
- Conservation, Biodiversity, and Resource Management
- Groundwater flow and contamination studies
- Water-Energy-Food Nexus Studies
- Water Quality and Pollution Assessment
- Aquatic Ecosystems and Phytoplankton Dynamics
- Freshwater macroinvertebrate diversity and ecology
- Genetics, Bioinformatics, and Biomedical Research
- Species Distribution and Climate Change
- Climate variability and models
- African Botany and Ecology Studies
- Hydraulic flow and structures
- Precipitation Measurement and Analysis
Government of Ethiopia
2024
Ministry of Water and Energy
2024
Bahir Dar University
2015-2023
Hawassa University
2019
The spatio-temporal characteristic of rainfall in the Beles Basin Ethiopia is poorly understood, mainly due to lack data. With recent advances remote sensing, satellite derived products have become alternative sources data for such gauged areas. objectives this study were: (i) evaluate a multi-source product (Climate Hazards Group Infrared Precipitation with Stations: CHIRPS) using gauge measurements and (ii) assess spatial temporal variability across basin validated CHIRPS period 1981–2017....
Abstract Landscape response to drivers of change is more visible and noticeable in deltas floodplains than upstream. Here, we address the changes Lake Tana basin by investigating delta development Gumara River sediment deposition Fogera floodplain over a 58‐year period when agricultural land expanded, agriculture intensified, flooding alluvial plain became frequent. Old maps show that formation before 1950s was minimal, indicating contributed rivers lake small. However, during last 58 years,...
Abstract Bathymetric and sedimentation surveys were conducted with a sonar‐based depth gauge system in two small reservoirs (Selamko Shina) the data‐scarce upper Blue Nile Basin, Ethiopia. survey data merged within geographic information ( GIS ) software to provide detailed visualization analyses of current depths. Preimpoundment topographic was obtained from dam owners designers. differencing used investigate quantify distribution estimate volumes deposited sediment, long‐term average...
Planning and decision making for new irrigation development projects requires the systematic assessment of irrigable land together with available water resources. The data required are usually not in developing countries, therefore a method was developed quantifying surface resources potentially ungauged watersheds Upper Blue Nile Basin using Soil Water Assessment Tool (SWAT) model Multi-Criterion Decision Evaluation (MCDE). tested Lah river basin Jabitenan district then applied whole area,...
The sustainable development of water resources includes retaining some amount the natural flow regime in bodies to protect and maintain aquatic ecosystem health human livelihoods wellbeing dependent upon them. Although assessment environmental flows is now occurring globally, limited studies have been carried out Ethiopian highlands, especially understand flow-ecological response relationships. This paper establishes a hydrological foundation Gumara River from an ecological perspective. data...
The meandering Ribb River flows in northwest Ethiopia to Lake Tana, the source of Blue Nile River. river has already undergone changes due several human interventions, such as embanking, sand mining, water extraction and lake level regulation for hydropower. At present, a dam weir are under construction store divert irrigation. This will strongly alter both sediment discharges downstream reaches, causing adjustments morphology. Assessing current morphodynamic trends is first necessary step...
Intensifying agriculture in Africa is degrading the water quality of rivers and lakes, thereby, threatening sustainable use resources. In Lake Tana Ethiopian highlands, first signs eutrophication were recently observed. Since relatively little known about non‐point source pollution sub‐Saharan Africa, objective was to examine sources phosphorus contribution an agricultural watershed near Tana. The 7‐km 2 Awramba selected. Dissolved concentration (DPC) groundwater soil‐available measured at...
This study was conducted to investigate technical and socio-political attributes that lead the underperformance of two selected irrigation schemes (Shina Bebeks) in Lake Tana floodplains, Ethiopia. Irrigation application efficiency (AE) at nine experimental fields showed a wide range, from 20 80%, but mostly between 40 60%. water-use (IWUE) varied 1.9 7.2 kg m−3 for onion 0.9 1.2 maize. The lined earthen canal conveyance losses Bebeks were 0.037 0.047 l s−1 m−1, whereas Shina they 0.033...
Abstract As one of the responses to global commitments against climate change, Ethiopian Government launched a nationwide Green Legacy Initiative (GLI) in 2019, which largely focused on forest tree plantations with some inclusion fruit trees. Despite its tremendous efforts and investments, effectiveness impacts have not been studied. This paper attempted address this necessity by conducting cross‐sectional quasi‐experiment three randomly selected woredas/districts Lake Hawassa Watershed from...
The present study investigates the impacts of industrial effluents on macroinvertebrate assemblages and water quality Lake Hawassa watershed. were assessed at 40 sampling sites. chemical ecological was evaluated using Basic Prati index Ethiopian Biological Score Index (ETHbios), respectively. Canonical Correspondence Analysis (CCA) used to evaluate relationship between abiotic factors metrics. A total 5 876 invertebrates belonging twentyfive families recorded. Coleoptera most dominant order...
There is an increasing need globally to establish relationships among flow, ecology, and livelihoods make informed decisions about environmental flows. This paper aimed the ecological foundation for a holistic flow assessment method in Gumara River that flows into Lake Tana Ethiopia Blue Nile River. First, conditions (fish, macro-invertebrate, riparian vegetation, physicochemical) of river system were characterized, followed by determining hydrological condition finally linking components....
This work investigates the applicability of an analytical method for quick assessments long-term morphological effects different dam operations on downstream river reaches with idea to apply in feasibility studies identify least morphologic-impacting operation scenario. The Ribb River (Ethiopia) is used as a study case. estimates idealized, new equilibrium bed profile without considering duration evolution. We distinguishing sand-bed from gravel-bed reaches. outcome compared that calibrated...
ABSTRACT Modeling sediment accumulation in constructed reservoirs is hampered by lack of historic concentration data developing countries. Existing models simulate using generated from rating curves usually defined as a power function the form S = aQb This often results residual errors that are not identically distributed throughout range stream flow values adding to uncertainty modeling practices. research measure accumulated Koga dam upper Blue Nile Basin and use result validate Soil...
The Fogera Plain, Ethiopia, is affected by recurrent flooding of the Ribb and Gumara Rivers. A large dam on River under construction for irrigation, but also to reduce flooding. We investigated effects flood regime floodplain wetlands using a combination hydrodynamic rainfall-runoff models. model was calibrated based inundation maps retrieved from Landsat images. Pre- post-dam comparison 10 years shows that will extent 11%, as it only regulates 23.8% upstream watershed. duration necessary...
Abstract The study was conducted to evaluate the performance of Selamko small scale irrigation scheme using internal and external indicators. command area 63 ha during season irrigated 42ha. Over all activities in primary data collected included: field observation, discharge measurements canals, soil moisture before after depth water applied at interviewing beneficiary farmers. Secondary were from secondary sources that South Gondar Small Scale Irrigation coordination office, SGBoWR WUA...