Mirani Dam

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Mirani Dam
Meeran Dam,turbat.jpg
Meerani Dam
Official name Mirani Dam
Location Kech District, Balochistan, Pakistan
Coordinates 25°56′28″N 62°41′35″E / 25.94111°N 62.69306°E / 25.94111; 62.69306Coordinates: 25°56′28″N 62°41′35″E / 25.94111°N 62.69306°E / 25.94111; 62.69306
Status In use
Construction began 8 July 2002[1]
Opening date October 2006
Owner(s) Government of Pakistan
Operator(s) Water and Power Development Authority (WAPDA)
Dam and spillways
Type of dam Concrete-faced rock-filled
Impounds Dasht River
Height 127 ft (39 m).
Length 3,350 ft (1,020 m).
Width (base) 35 ft (11 m).
Reservoir
Creates Mirani Reservoir (302,000 acre·ft (373,000,000 m3).)

Mirani Dam (Urdu: میرانی‎) is a medium-size multi-purpose concrete-faced rock-filled dam located on the Dasht River south of the Central Makran Range in Kech District in Balochistan province of Pakistan. Its 302,000 acre feet (373,000,000 m3) reservoir is fed by the Kech River and the Nihing River.[1] Mirani Dam was completed in July 2006 and it impounded the Dasht River in August 2006. It successfully withstood an extreme flood event in June 2007.[2] The dam is used for irrigation of 33,200 acres in Kech Valley and for the supply of clean drinking water to Turbat and Gwadar.

History and construction[edit]

The feasibility report of the Mirani dam project was first completed in 1956. The project then went in to the back screen due to the other major events of the time. 45 years passed like that and then in the wake of Gwadar Port development [3] Mirani Dam was commissioned by Pakistan's Water and Power Development Authority (WAPDA) in 2001 to provide water for the Gawadar city. Its ground breaking was performed by then President of Pakistan Gen. Pervez Musharraf in August 2001. The design was prepared by the National Engineering Services Pakistan (NESPAK) and the construction contract was awarded in June 2002 on EPC/Turnkey basis to Mirani Dam Joint Venture, a consortium led by Descon Engineering Limited.[4]

Commencement of work began in June 2002 and the project was completed in June 2007.[5] Impounding of reservoir started in July 2006 and was inaugurated by then President of Pakistan Gen. Pervez Musharraf on 16 November 2006.[4]

Construction of the dam consumed 10.87 million man-hours and, at its peak, 1,550 people were employed for its construction, mostly from Kech and Gwadar districts. 19038 Acres of land was acquired for the project.[4]

Geography and hydrology[edit]

Mirani Dam is located on Dasht River, approximately 30 miles (48 km) west of Turbat and 380 miles (610 km) south west of Quetta, in Makran Division of Balochistan. The Central Makran Range are located to the north of the dam site. The reservoir is located on the confluence of the two tributaries of Dasht; Kech River and Nihing River.[4]

Both Kech and Nihing are seasonal streams which flow during summer from rainfall and melting snow from the mountains upstream.

Structure and purpose[edit]

Kech Valley consists of cultivable soil upon which agriculture activity could be carried out if a constant water supply is ensured. The primary purpose of Mirani Dam was to store water from the three rivers during the summer season and during floods so that water could be available for irrigation purposes throughout the year in order to bring 33,200 acres of hitherto uncultivated land in Kech Valley under cultivation. The secondary purpose of Mirani Dam is to ensure a constant supply of clean drinking water to the towns of Turbat and Gwadar throughout the year.

Reservoir:
Gross Storage: 302,000 acre·ft (373,000,000 m3).
Live Storage: 52,000 acre·ft (64,000,000 m3).
Average Annual Releases: 114,000 acre·ft (141,000,000 m3).

Dam:
Type: Concrete-faced rock-filled
Height: 127 ft.
Length at Crest: 3,350 ft.
Top Width: 35 ft.

Spillway:
Type: Overflow
Clear Waterway: 344 ft.
Designed Capacity: 205,800 cu ft/s (5,830 m3/s)
Maximum Capacity: 384,300 cu ft/s (10,880 m3/s)

Outlet:
Tunnel Diameter: 8 ft.
Capacity: 377 cu ft/s (10.7 m3/s)

Irrigation System Command Area & Capacity:
Irrigation System: Gravity, Lined Channels
Right Bank Canal: 20,800 acres (84 km2) & 36 cu ft/s (1.0 m3/s)
Left Bank Canal: 12,400 acres (50 km2) & 141 cu ft/s (4.0 m3/s)
Total: 33,200 acres (134 km2) & 377 cu ft/s (10.7 m3/s) [6][1]

Gallery[edit]

See also[edit]

References[edit]

  1. ^ a b c "Mirani Dam". Scribd.com. 2008-11-10. Retrieved 2013-11-20. 
  2. ^ [1][dead link]
  3. ^ "PAKISSAN.com; Designing Mirani Dam for local needs". Pakissan.com. Retrieved 2013-11-20. 
  4. ^ a b c d General Manager (Projects) South, WAPDA House. "Mirani Dam Project Brief". Vision 2025. WAPDA, Govt. of Pakistan. p. 1. Retrieved 24 July 2012. 
  5. ^ "Mirani Dam Project". WAPDA, Govt. of Pakistan. Retrieved 24 July 2012. 
  6. ^ "descon Resources and Information. This website is for sale!". descon.com.pk. Retrieved 2013-11-20. 

External links[edit]