Gereb Segen (May Gabat)

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Gereb Segen
Aerial Gereb Segen and May Gabat.jpg
Gereb Segen is located in Ethiopia
Gereb Segen
Gereb Segen
Coordinates13°24′14″N 39°24′00″E / 13.404°N 39.4°E / 13.404; 39.4Coordinates: 13°24′14″N 39°24′00″E / 13.404°N 39.4°E / 13.404; 39.4
TypeFreshwater artificial lake
Primary inflowsMay Gabat
Primary outflowsMay Gabat
Basin countriesEthiopia
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 , with the main aim of providing Mekelle with water.

Gereb Segen dam and reservoir

Challenges[]

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

  • Pipe diameters are underfit
  • Leakage through the abutment
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).

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. ^ https://link.springer.com/article/10.1007/s10064-019-01577-0#Sec8 Electrical resistivity imaging and engineering geological investigation of Gereb Segen dam, northern Ethiopia
  4. ^ Nigussie Haregeweyn, and colleagues (2008). "Sediment yield variability in Northern Ethiopia: A quantitative analysis of its controlling factors". Catena. 75: 65–76. doi:10.1016/j.catena.2008.04.011.
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