Gereb Awso is a reservoir located in the Inderta woreda of the Tigray Region in Ethiopia. The earthen dam that holds the reservoir was built in 1998 by SAERT.[1]

Gereb Awso
Gereb Awso is located in Ethiopia
Gereb Awso
Gereb Awso
Coordinates13°25′47″N 39°33′12″E / 13.4296493°N 39.55336882°E / 13.4296493; 39.55336882
TypeFreshwater artificial lake
Basin countriesEthiopia
Surface area0.0212 km2 (0.0082 sq mi)
Water volume0.119×10^6 m3 (96 acre⋅ft)
Surface elevation2,290 m (7,510 ft)
SettlementsKwiha

Dam characteristics

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  • Dam height: 10.5 metres
  • Dam crest length: 196 metres
  • Spillway width: 3 metres

Capacity

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  • Original capacity: 118944 m3
  • Dead storage: 3944 m3
  • Reservoir area: 2.12 ha

Irrigation

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  • Designed irrigated area: 9 ha
  • Actual irrigated area in 2002: 5 ha

Environment

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The catchment of the reservoir is 1.21 km2 large, with a perimeter of 4.62 km and a length of 1780 metres. The reservoir suffers from rapid siltation.[2][3] The lithology of the catchment is Agula Shale.[1] Part of the water that could be used for irrigation is lost through seepage; the positive side-effect is that this contributes to groundwater recharge.[4]

References

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  1. ^ a b De Wit, Joke (2003). Stuwmeren in Tigray (Noord-Ethiopië): kenmerken, sedimentatie en sediment-bronnen. Unpub. M.Sc. thesis. Department of Geography, K.U.Leuven.
  2. ^ Nigussie Haregeweyn, and colleagues (2006). "Reservoirs in Tigray: characteristics and sediment deposition problems". Land Degradation and Development. 17: 211–230. doi:10.1002/ldr.698. S2CID 129834993.
  3. ^ Vanmaercke, M. and colleagues (2019). "Sediment Yield and Reservoir Siltation in Tigray". Geo-trekking in Ethiopia's Tropical Mountains. GeoGuide. Cham (CH): Springer Nature. pp. 345–357. doi:10.1007/978-3-030-04955-3_23. ISBN 978-3-030-04954-6. S2CID 199112876.
  4. ^ Nigussie Haregeweyn, and colleagues (2008). "Sediment yield variability in Northern Ethiopia: A quantitative analysis of its controlling factors". Catena. 75 (1): 65–76. Bibcode:2008Caten..75...65H. doi:10.1016/j.catena.2008.04.011.