The baro river is a river in southwestern ethiopia, which defines part of ethiopias border with south sudan. The increase in flow is likely to have considerable importance for local small scale irrigation activities. Awash basin covers parts of afar, amhara, oromia, somali regional states, snnp and addis ababa and dire dawa administrative councils. Pdf climate change projections in the upper gilgel abay. Current ecological scenario of some rift valley lakes, 2016. A followup project capacity building for nile basin water resources management synthesis report 3. The abay river basin zentrum fur entwicklungsforschung.
Today it provides a home and sustenance to tens of millions of people, many of them among the worlds poorest. The gilgel abay river and the lake tana are important for various socioeconomic purposes. The statistical downscaling tool sdsm was used to downscale the hadcm3 hadley centre climate model 3 global circulation model gcm scenario data into finer scale resolution. Hydroclimatic trends in the abayupper blue nile basin.
The study mainly focused on estimating land use change and stream flow under different land use land cover changes of the sub basin. River basin 16 development and management data sharing, or the introduction of other issues of common interest in the negotiations may assist in building trust and achieving equitable agreements. Threats and opportunities to major rift valley lakes wetland, 2017. Assessment of climate change impacts on the hydrology of. This is a prerequisite step to understand the cause and effect of trends and the links to water supply and use in the basin. Countries in the nile river basin need to adapt to climate change in water management without delay. Overview of the hydrogeology and groundwater occurrence in.
Keith patrick garrettgost is not necessarily the originator of this data, if you have questions. The area of study was the gilgel abay catchment that drains in lake tana. Discoveries in the ogaden basin indicated the gascondensate fields of calub and hilal, with estimated reserves of 2. Preliminary distribution of potential aquifer recharge in the nile basin. However, due to climate change and variability, the water level in the lake fluctuates. Assessment of future flood inundations under climate and. Hydrological modeling to assess climate change impact at. An indication of oil seep from wereilu locality in the northeastern margin of the basin makes the abay basin one of the promising areas to undertake petroleum exploration. The general objective of the study is to assess the validity of the semi distributed water balance model developed for the upper blue nile basin steenhuis et al. Nile river also called abbay river in ethiopia exits from the south east of lake tana and flows south and then. There is an alphabetic list at the end of this article. Land use land cove maps of 1986 and 2010 were developed using satellite image throughmaximum likelihood algorithm of. Hydrological response to climate change for gilgel abay. A river is a course of water that originates in the mountains and flows downwards until it reaches the sea.
This chapter presents basinlevel impact of climate change over the upper gilgel abay river catchment, blue nile basin, ethiopia. The results provide a basis for evaluating future impacts of climate change on the upper blue nile river abay river. It is the largest lake in ethiopia and the third largest in the nile basin. River, in the lake tana basin upper blue nile basin of.
Ministry of agriculture to write a construction manual, which was technically. Its two subbasins are referred to as abay on the ethiopian side and as. Basin, called the abay in ethiopia, is the largest branch of the nile draining the ethiopian highlands. The basin is characterized by different volcanic formations covered by thick alluvial and residual quaternary sediments at the center of the basin around lake tana. Perspectives of the grand ethiopian renaissance dam gerd 2017 global journals inc. With the white nile, it is one of the two major tributaries of the nile. Not all problems can or should be solved at the river basin level. The upper part of the blue nile flows through the central highlands of ethiopia before continuing its way to sudan. Typically, during julyoctober about 80% of the nile river total stream flow at aswan, egypt coming from the blue nile abbay river elsanabary and gan, 20. This may sound obvious, but it is precisely this aspect that allows us to understand what a river is and how it functions. Pdf hydrological effects of land use land cover changes. The baro river is created by the confluence of the birbir and gebba rivers, east of metu in the illubabor zone of the oromia region. Analysis of water use on a large river basin using mike.
Despite the importance of the river nile since antiquity, very little research has been conducted into the cultural and religious aspects of the blue nile in general or into its sources in particular. This is the main river basin contributing to the nile and a source of water for millions of people in sudan and egypt, downstream from ethiopia. Managing economic sectors water needs for iwrm in tana sub. So spoke sun yue, director of the international department of the stateowned china water resources and hydropower engineering corporation sinohydro. The basin is bordered on the north by the mediterranean. This is a list of streams and rivers in ethiopia, arranged geographically by drainage basin. Ethiopia is divided into 12 river basins, among these abay basin is one. The blue nile abay river is originating in the lake tana basin where many perennial and seasonal streams feed the largest lake of ethiopia tana. There are twelve major river basins in ethiopia of which awash basin is one and the most utilized river basin so far. A waterfall on the awash river laden with mud after a storm in central ethiopias oromia region. Application of swat soil and water assessment tool to. Abay river basin authority was established by proclamation no. The study evaluated the quality of observed meteorological and hydrological data, established swat hydrological model, identified the most sensitive parameters, evaluated the. The basin is characterized by different volcanic formations covered by thick alluvial and residual quaternary sediments at the.
Information products for nile basin water resources. Tekeze dam is for ethiopia what three gorges is for china. Overall, it appears that climate change will result in an annual increase in flow volume for the gilgel abay river. The nile river basin water, agriculture, governance and livelihoods the nile is the worlds longest river and sustains the livelihoods of millions of people across. Fish species diversity in major river basins of ethiopia. Extensive exposures of mesozoic sediments are also present in the southeastern plateau in harenge province. Hydrologic impacts of landuse change in the upper gilgel abay river basin, ethiopia. The increase in flow will help to harness a significant amount of water for the ongoing dam projects in the gilgel abay river basin.
The blue nile is the principal tributary of the main nile river. Assessment of water governance capacity, awash basin, 20. The aim of the present study was to assess the impact of climate change on the gilgel abay river, upper blue nile basin. The blue nile river basin is one of the most sensitiv e basins to. Pdf application of swat soil and water assessment tool to the. Moreover, it will help harnessing a significant amount of water for ongoing dam projects in the gilgel abay river basin. The objective of this paper is to identify the presence of hydroclimatic trends in the abayupper blue nile basin at subcatchment level. The abbayblue nile2 subbasin covers an area of 311,548 km2hydrosult et al 2006b. The source of the blue nile is usually seen as either the gish abay spring or the rivers outlet from lake tana. Analyzing catchment behavior through catchment modeling in the. The nbi developed a nile river basin cooperative framework agreement containing 44 articles clearly defining the intension, utilization, sustainability, optimization, benefit sharing and cost sharing principles of. Amazon river basin organization of american states. A total seventeen fish species were africa and the second longest in the world. Evaluation of stream flow under land use land cover change.
According to future projections, precipitation and temperature will increase over eastern africa in the coming century. Effects of climate change on water resources in the upper. Characterization and atlas of the blue nile basin and its sub. Among these river basins, abay, baroakobo, omo and tekeze encompass 80 90% of the countrys total surface water resource. The water of awash basin, a future challenge, ilri, no date. A contour map of soil loss for abay basin was developed from these estimated values and shown in figure 8. In this study the semidistributed model swat soil and water assessment tool, were applied to evaluate stream flow of didessa sub basin, which is one of the major sub basins in abay river basin of ethiopia.
The nile river basin the 6850km long nile is the worlds longest river, and flows from south to north with a catchment basin covering approximately 10% of the african continent exhibit 1. It flows recorded in upper head of blue nile river 26. From this point onwards, the river flows northwards through the sahara desert, where precipitation is less than 100 mm per year. Nile river basinthe water, agriculture, governance and livelihoods edited by seleshi bekele awulachew vladimir smakhtin david molden don peden. Preface the nile river basin is a truly unique environment that has played a significant part in world history. Upper blue nile basin ubnb is located in the ethiopian highlands, which is the most important subbasin of the nile. Us 2 bglobal journal of human social science y ear 201 ater in the blue nile gorge for hydropower generation according to kenawy 20, the issue of the nile water e conflict that was raised between egypt and. Abay originates in lake tana in ethiopia, and is the second principal stream of the nile. Application of swat soil and water assessment tool to the abay river basin of ethiopia.
These are 6,700 km from its source in the equatorial lake basin to the included in three families i. Figure 1 the location of the abay river basin with documented water projects. The blue nile supplies about 80% of the water in the nile during the rainy season. Hydrological effects of land use land cover changes on stream flow at gilgel abay river basin, upper blue nile, ethiopia article pdf available january 2016 with 270 reads how we measure reads. Dile yt, berndtsson r, setegn sg 20 hydrological response to climate change for gilgel abay river, in the lake tana basin upper blue nile basin of ethiopia. The river flow is primarily dependent on seasonal characteristics. Abay, ribb, gumera and megech are the main rivers feeding the lake, and con. Application of hechms model for flow simulation in the. Hydrological response to climate change for gilgel abay river, in. Ethiopias longest unique river is the awash, while its longest shared with other nations is the nile. It covers an estimated area of 311,437 km2 and is the white nile in khartoum, sudan. When planning adaptation across boundaries, riparian. The nile river basin, which covers about onetenth of the area of the continent, served as the stage for the evolution and decay of advanced civilizations in the ancient world. Manual calibration of the daily models for three differ ent catchment.
1104 569 866 120 928 53 505 147 456 519 1023 578 649 1392 1456 1205 992 580 526 618 162 975 451 374 297 1328 117 1355 226 985 393 379 969