Mirani Dam
Mirani Dam
Mirani dam is located on the Desht river about 30 miles (48 Km) west of Turbat in the Makran division, Balochistan, Pakistan. The Project is located about 380 miles South-West of Quetta. It has Central Makran Range in the north and is located on the confluence of two rivers i.e. Kech and Nihang.
The Project aims at provision of dependable water supply for development of Irrigated agriculture on both banks of the Dasht River. This was the first Engineering Procurement & Construction (EPC) contract in the water sector Under WAPDA’s Vision2025 Water & Power Development Programme.
The contract was awarded in June 2002 to Mirani Dam Joint Venture (MDJV) consisting of three local construction companies for Completion of the Project within a period of 4 Years.
A joint venture of local and fireign consultants, Led by NESPAK, provided the Management Consultancy Services to WAPDA for the Project.
The project was completed in 2007.
| Hydrology | ||
| Total Catchment area | 7,964 sq. miles | 20,627 Sq. km |
| Total Catchment area | 7,964 sq. miles | 20,627 Sq. km |
| Average annual rainfall | 4.21 inches | 107 mm |
| Average annual flow | 223,000 acre ft. | 275 MCM |
| Maximum probable flow | 623,860 cusecs | 17,668 cumecs |
| DAM | ||
| Type | Concrete Faced Rockfill Dam (CFRD) | |
| Maximum Height | 127 ft. | 38.7 m |
| Crest Elevation (SPD) | El. 268 ft. | 81.7 m |
| Length | 3,080 ft. | 939 m |
| RESERVOIR | ||
| Area | 17,982 acres | 7,277 hectares(87 sq-km) |
| Gross Storage | 302,000 acre-ft. | 372 MCM |
| Live Storage | 152,000 acre-ft. | 187 MCM |
| Normal conservation level (SPD) | El. 244 ft. | El. 74.4 m |
| Highest flood level (SPD) | El. 276 ft. | El. 84.1 m |
| Average Annual Releases | 114,000 acre-ft | 141 MCM |
| SPILLWAY | ||
| Type | Ungated with stilling basin< | |
| Design capacity | 205,800 cusecs | 5,856.7 cumecs |
| Maximum capacity | 384,300 cusecs | 10,883.6 cumecs |
| Waterway (ogee length ) | 600 ft. | 182.9 m |
| Crest Level | El. 244 ft | El. 74.4 m |
| IRRIGATION OUTLET | ||
| Type | Steel conduit | |
| Diameter | 6 ft. | 1.8 m |
| Capacity | 377 cusecs | 10.7 cumecs |
| Length | 1,490 ft. | 454 m |
| LOW LEVEL OUTLET | ||
| Type | Steel conduit | |
| Diameter | 3 ft. | 0.9 m |
| Capacity | 120 cusecs | 3.4 cumecs |
| Length | 855 ft. | 260.6 m |
| IRRIGATION SYSTEM | ||
| Type | Gravity, lined canals | |
| Total command area | 33,200 acres | 13,436 hectares (160.7 sq-km) |
| On Left bank | 12,400 acres | 5,018 hectares (60 sq-km) |
| On right bank | 20,800 acres | 8,418 hectares (100.7 sq-km) |
| Left Bank Canal | ||
| Design discharge | 141 cusecs | 4 cumecs |
| Length | 11.84 miles | 19 km |
| No. of Distributaries / minors / water courses | 04 / 18 / 77 | |
| Right Bank Canal | ||
| Design discharge | 236 cusecs | 6.7 cumecs |
| Length | 12.55 miles | 20.2 km |
| Total Project Cost | Rs. 6,959 million | US $ 87 million |
| RAP Cost | Rs.1,688 million | US $ 21 million |
| Land affected | 19,038 acres | 7,705 hectares(92 sq-km) |
| Economic Internal Rate of Return E.I.R.R | 12% |