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Sieve Structures To Control Gully Erosion On The Borana Plateau, D. Layne Coppock, Brien E. Norton, Demisachew Tadele, Jaldesa Doyo, Bedasa Eba, Dereje Teshome

Environment and Society Faculty Publications

Gully erosion is a widespread problem in the Borana plateau. Gullies are the main pathway for sediment accumulation in community ponds, especially during heavy rains, which reduces pond capacity. Sediment movement in gullies can be substantially reduced by installation of sieve structures that slow down water flows and allow sediment to settle out of suspension. Sieves can be easily constructed from trees by community labour at low cost. The community should develop a landscape-level plan and follow a suitable sieve design. Project Kalo collaborators have demonstrated that a series of sieve structures down a secondary gully in the Dikale pond …