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  • 21 Aug, 2019

  • By, Wikipedia

Gereb Segen (Hintalo)
Gereb Segen is a reservoir located in the Hintalo Wajirat woreda of the Tigray Region in Ethiopia. The earthen dam that holds the reservoir was built in 2000 by SAERT.

Gereb Segen (with spillway)

Dam characteristics

  • Dam height: 14.86 metres
  • Dam crest length: 473 metres
  • Spillway width: 8 metres

Capacity

  • Original capacity: 337408 m³
  • Dead storage: 22400 m³
  • Reservoir area: 11.7 ha

In 2002, the life expectancy of the reservoir (the duration before it is filled with sediment) was estimated at 25 years.

Irrigation

  • Designed irrigated area: 24 ha
  • Actual irrigated area in 2002: zero ha

Environment

Gereb Segen with catchment

The catchment of the reservoir is 3.53 km large, with a perimeter of 11.66 km and a length of 5200 metres. The reservoir suffers from rapid siltation. The lithology of the catchment is Agula Shale. 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.

Homonymous places

There is a (much larger) dam with the same name, some 20 km to the northwest: Gereb Segen (May Gabat)

References

  1. ^ 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.
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