Gereb Segen (May Gabat)

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Gereb Segen
Aerial Gereb Segen and May Gabat.jpg
Ethiopia relief location map.jpg
Red pog.svg
Gereb Segen
Coordinates 13°24′14″N39°24′00″E / 13.404°N 39.4°E / 13.404; 39.4
Type Freshwater artificial lake
Primary inflows May Gabat
Primary outflows May Gabat
Basin  countries Ethiopia
Surface area1.3 km2 (0.50 sq mi)
Surface elevation1,869 m (6,132 ft)

Gereb Segen is a reservoir located in the Inderta woreda of the Tigray Region in Ethiopia. The earthen dam that holds the reservoir was built in 2016 by the Tigray Water Bureau, with the main aim of providing Mekelle with water.

Contents

Gereb Segen dam and reservoir May Gabat dam.jpg
Gereb Segen dam and reservoir

Challenges

In 2018-2019 the reservoir was unable to sustain the water needs of Mekelle

Leakage from Gereb Segen dam Leakage from Gereb Segen dam.jpg
Leakage from Gereb Segen dam

Irrigation

Though the reservoir was not intended for irrigation, its seepage water is used in the downstream valley for irrigation. The lithology of the catchment is Antalo Limestone. [2] Part of the water is lost through seepage; [3] the positive side-effect is that this contributes to groundwater recharge, [4] and it allows irrigation by the downstream communities.

Homonymous places

There is a (much smaller) reservoir with the same name, some 20 km to the southeast: Gereb Segen (Hintalo).

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References

  1. ↑ Vanmaercke, M. and colleagues (2010). "Sediment dynamics and the role of flash floods in sediment export from medium-sized catchments: a case study from the semi-arid tropical highlands in northern Ethiopia". Journal of Soils and Sediments. 10 (4): 611–627. doi:10.1007/s11368-010-0203-9. hdl: 1854/LU-854315 . S2CID   53365853.
  2. ↑ De Wit, Joke (2003). Stuwmeren in Tigray (Noord-Ethiopië): kenmerken, sedimentatie en sediment-bronnen. Unpub. M.Sc. thesis. Department of Geography, K.U.Leuven.
  3. ↑ Mebrahtu, Gebreslassie; Abay, Asmelash; Hailu, Gebrerufael; Hagos, Miruts (2020). "Electrical resistivity imaging and engineering geological investigation of Gereb Segen dam, northern Ethiopia". Bulletin of Engineering Geology and the Environment. 79: 83–95. doi:10.1007/s10064-019-01577-0. S2CID   199098746.
  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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