Addi Akhor
| Addi Akhor | |
|---|---|
  Addi Akhor | |
| Coordinates | 13°30′N 39°40′E / 13.500°N 39.667°E |
| Type | Freshwater artificial lake |
| Basin countries | Ethiopia |
| Surface area | 0.0819 km2 (0.0316 sq mi) |
| Water volume | 0.510777×106 m3 (414.094 acre⋅ft) |
| Settlements | Kwiha |
Addi Akhor is a reservoir located in the Enderta district 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: 18 metres (59 ft)
- Dam crest length: 210 metres (690 ft)
- Spillway width: 1.3 metres (4 ft 3 in)
Capacity
[edit]- Original capacity: 510,777 m3 (18,037,900 cu ft)
- Dead storage: 6,008 m3 (212,200 cu ft)
- Reservoir area: 8.19 ha (20.2 acres)
In 2002, the life expectancy of the reservoir (the duration before it is filled with sediment) was estimated at 30 years.[1]
Irrigation
[edit]- Designed irrigated area: 30 ha (74 acres)
- Actual irrigated area in 2002: 20 ha (49 acres)
Environment
[edit]The catchment of the reservoir is 2.75 km2 (1.06 sq mi) large. The reservoir suffers from rapid siltation.[2] The lithology of the catchment is Antalo Limestone and Mekelle Dolerite.[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.[3]
References
[edit]- ^ a b c 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.
- ^ 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.