Gereb Shegal
| Gereb Shegal | |
|---|---|
 | |
  Gereb Shegal | |
| Coordinates | 13°35′16″N 39°27′09″E / 13.58772585°N 39.45243401°E |
| Type | Freshwater artificial lake |
| Basin countries | Ethiopia |
| Surface area | 0.171 km2 (0.066 sq mi) |
| Water volume | 1×106 m3 (810 acre⋅ft) |
| Surface elevation | 1,900 m (6,200 ft) |
| Settlements | Romanat |
Gereb Shegal 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]
Dam characteristics
[edit]- Dam height: 20 metres
- Dam crest length: 363 metres
Capacity
[edit]- Original capacity: 1000000 m³
- Reservoir area: 17.1 ha
Irrigation
[edit]- Designed irrigated area: 52 ha
- Actual irrigated area in 2002: 14 ha
Environment
[edit]The catchment of the reservoir is 8.67 km² large, with a perimeter of 12.12 km and a length of 4320 metres. The reservoir suffers from rapid siltation.[2][3] The lithology of the catchment is Mekelle Dolerite and Antalo Limestone.[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
[edit]- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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.