Araya Hagos, B. Grum, Fiseha Gebru, Shishay Yemane, Solomon Berhane, M. Berhe, Sesen Tekleyohannes, Tesfahunegn Abera, Ashenafi Aregawi, B. Abebe
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Runoff response and sediment yield from urban road surfaces: an experimental study in semi-arid northern Ethiopia
ABSTRACT This study investigated the effect of gravel and cobblestone road surfaces on runoff responses and sediment yield in semi-arid northern Ethiopia. A field experiment was set up with six treatments of gravel and cobblestone road surfaces at 1, 3 and 7% slope gradients. Cobblestone road surface produced significantly lower runoff than gravel. Slope gradient had a significant effect on the runoff amount from gravel and cobblestone road surfaces. Runoff reductions by cobblestone road surface compared to gravel at 1, 3 and 7% slopes were 27, 30 and 31%, respectively. Runoff coefficients for gravel road surface at 1, 3, and 7% slopes were 0.60, 0.65 and 0.68, respectively. Runoff coefficients for cobblestone at 1, 3 and 7% slopes were 0.41, 0.45 and 0.47, respectively. Slope gradient had a significant effect on sediment yield for a gravel road surface. Sediment yield from cobblestone, however, was insignificant compared to gravel.
期刊介绍：
Hydrological Sciences Journal is an international journal focused on hydrology and the relationship of water to atmospheric processes and climate.
Hydrological Sciences Journal is the official journal of the International Association of Hydrological Sciences (IAHS).
Hydrological Sciences Journal aims to provide a forum for original papers and for the exchange of information and views on significant developments in hydrology worldwide on subjects including:
Hydrological cycle and processes
Surface water
Groundwater
Water resource systems and management
Geographical factors
Earth and atmospheric processes
Hydrological extremes and their impact
Hydrological Sciences Journal offers a variety of formats for paper submission, including original articles, scientific notes, discussions, and rapid communications.
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