[PDF] Top 20 Changes in land cover, rainfall and stream flow in Upper Gilgel Abbay catchment, Blue Nile basin – Ethiopia

... analyzed changes in the land cover and rainfall and the hydrological regimes of the Upper Gilgel Ab- bay catchment with size of approximately 1656 km 2 ...The ... See full document

... of land use as a result of several factors such as population growth, climatic varia- bility, and national ...years, land cover and land use changes induced by human population pressure ... See full document

... and stream flow (Woldeam- lak ...head stream of Blue Nile ...LU/LC changes is fundamental, which have national and international ...LU/LC changes from 1985 to 2015 periods ... See full document

... annual rainfall recorded was 1730 mm (averages from 1960 to 2004) with mono-modal rainfall (Gebrehiwot et ...the catchment (Solomon N: Error in high-resolution satellite rainfall produc- tion ... See full document

... of land cover change to streamflow was evaluated by analyzing historical land cover dynamics with reference to streamflow and rainfall ...that land cover change is one of ... See full document

... significant changes in the stream flow in the Nyangores River have ...simulated stream flow hydrographs shows a higher flow peaks for the 2010 land-use cover ... See full document

... Poor land use practices and improper management systems have played a significant role in causing high soil erosion rates, sediment transport and loss of agricultural nutrients ...significance. Gilgel Abay ... See full document

... In Ethiopia, few studies have analysed the trend of hydro- climatic variables, including streamflow and ...annual rainfall over the Blue Nile and Atbara basins, resulting in a reduction of ... See full document

... the Gilgel Abay catchment in the validation ...not cover well the catchments. This is particularly the case for the Gilgel Abay catchment, where the rainfall stations are poorly ... See full document

... base flow is decreasing due to the expansion of cultivated land and reduction of forest coverage that reduce evapotran- spiration during the periods 1985 and 1995, as compared to the baseline-period 1973 ... See full document

... area. Blue Nile River is one of the most sensitive rivers towards climate change ...of Blue Nile River is Lake Tana where the two adjacent tributary rivers, Ribb & Gumera, are located and ... See full document

... of Blue Nile River is Lake Tana and flows at the Eastern outskirts of Bahir Dar town, forming the famous Blue Nile Fall (Tiss Isat Fall) after 30 km travel from its source which drops down ... See full document

... 2.2. The Maize Based Farming System Maize is the dominant crop in this farming system, which is situated in the southwestern part of the Abbay Basin, but a number of other crops like tef, wheat (Triti- cum ... See full document

... This aquifer group is formed by weathered and fractured zones of the aphanitic basalts only and is found mainly in the central, eastern, southeastern, southern, northeastern and northern parts of the study area occupying ... See full document

... main changes in wa- tersheds mentioned above with afforestation and climate adaptation should be in place to mitigate and keep the health of ...Low flow frequency analysis has indicated that the long term ... See full document

... cludes latitude (Lat [degree-decimal]) and longitude (Long [degree-decimal])) of the center of each watershed, area of the watersheds (Area [km 2 ]), average elevation (El [m]) and average slope class (Slope [%]). All ... See full document

... The planting of coniferous forests on uplands previously characterised by moorland vegetation is likely to cause an increase in base cation uptake. Following harvesting the base cations are lost to the system thus ... See full document

... an estimated 1.9–3.5 billion tons of topsoil in Ethiopian highlands has been lost and as a result about 20,000– 30,000 ha of cropland was taken out of production due to severe soil erosion in the earlier decades (EFAP ... See full document

... A quantitative assessment is needed to infer on the extent and magnitude of soil erosion problems so that sound management strategies can be developed on a regional basis with the help of field measurements [10]. ... See full document

... of rainfall, however, frequency analysis works only when there is a fixed rainfall ...duration. Rainfall can be study for different durations, say 1 hour, 24 hours, can be months to years (Chulsang ... See full document