1. Runoff response and sediment yield from urban road surfaces: an experimental study in semi-arid northern Ethiopia.
- Author
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Hagos, Araya, Grum, Berhane, Gebru, Fiseha, Yemane, Shishay, Berhane, Solomon, Berhe, Melaku, Tekleyohannes, Sesen, Abera, Tesfahunegn, Aregawi, Ashenafi, and Abebe, Bizuneh A.
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PAVEMENTS , *RUNOFF , *SEDIMENTS , *FIELD research , *GRAVEL - 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. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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