Jump to content

Addi Amharay

Coordinates: 13°24′18″N 39°34′24″E / 13.40500132°N 39.5733461°E / 13.40500132; 39.5733461
From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by Rastakwere (talk | contribs) at 13:06, 13 September 2019. The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Addi Amharay
Coordinates13°24′18″N 39°34′24″E / 13.40500132°N 39.5733461°E / 13.40500132; 39.5733461
TypeFreshwater artificial lake
Basin countriesEthiopia
Surface area0.315 km2 (0.122 sq mi)
Water volume0.957×10^6 m3 (776 acre⋅ft)
Surface elevation2,320 m (7,610 ft)
Islands0
SettlementsKwiha

Addi Amharay is a reservoir located in the Inderta woreda of the Tigray Region in Ethiopia. The earthen dam that holds the reservoir was built in 1997 by SAERT.[1]

Dam characteristics

  • Dam height: 14.7 metres
  • Dam crest length: 128 metres
  • Spillway width: 17 metres

Capacity

  • Original capacity: 957000 m³
  • Dead storage: 175000 m³
  • Reservoir area: 31.50 ha

In 2001, the life expectancy of the reservoir (the duration before it is filled with sediment) was estimated at 33 years.[1]

Irrigation

  • Designed irrigated area: 60 ha
  • Actual irrigated area in 2001: 5 ha

Environment

The catchment of the reservoir is 4.92 km² large, with a perimeter of 9.62 km and a length of 3560 metres. The reservoir suffers from rapid siltation.[2] The lithology of the catchment is Antalo Limestone and Agula shale.[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

  1. ^ 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.
  2. ^ Nigussie Haregeweyn, and colleagues (2006). "Reservoirs in Tigray: characteristics and sediment deposition problems". Land Degradation and Development. 17: 211–230.
  3. ^ Nigussie Haregeweyn, and colleagues (2008). "Sediment yield variability in Northern Ethiopia: A quantitative analysis of its controlling factors". Catena. 75: 65–76.

Addi Amharay