Coordinates: 19°01′04.39″S 47°50′59.43″E / 19.0178861°S 47.8498417°E / -19.0178861; 47.8498417

Mantasoa Dam

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Mantasoa Dam
Mantasoa Dam is located in Madagascar
Mantasoa Dam
Location of Mantasoa Dam in Madagascar
CountryMadagascar
LocationMantasoa, Analamanga Region
Coordinates19°01′04.39″S 47°50′59.43″E / 19.0178861°S 47.8498417°E / -19.0178861; 47.8498417
PurposePower, water supply
StatusOperational
Construction began1937
Opening date1938; 86 years ago (1938)
Owner(s)Jirama
Dam and spillways
Type of damButtress
ImpoundsVarahina-North River
Height20 m (66 ft)
Length122 m (400 ft)
Reservoir
CreatesLake Mantasoa
Total capacity125,000,000 m3 (101,000 acre⋅ft)
Surface area20 km2 (7.7 sq mi)

Mantasoa Dam is a buttress dam on the Varahina-North River, a tributary of the Ikopa River, near Mantasoa in the Analamanga Region of Madagascar. The dam was constructed by French contractors between 1937 and 1938. It creates Lake Mantasoa which has a surface area of 20 km2 (7.7 sq mi). The dam itself is made of 8,000 m3 (10,000 cu yd) of concrete and has a reinforced buttress design.[1] Water released from the dam supplies a regulated flow to hydroelectric power station at the Antelomita Dams downstream. A saddle dam on the north side of the Mantosoa reservoir regulates water flow into the Mandraka River for the Mandraka Dam downstream.[2][3]

See also

References

  1. ^ "The French civil engineering works in the world dams 1860-2012" (PDF). IESF. Archived from the original (PDF) on 18 March 2014. Retrieved 17 March 2014.
  2. ^ "Mantasoa and lake". Mantasoa. Retrieved 17 March 2014. {{cite web}}: Check |url= value (help)[permanent dead link]
  3. ^ "Dams of Madagascar". UN FAO. Archived from the original on 5 September 2013. Retrieved 17 March 2014.
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