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learn the entire creation |
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posted by: naveed (reply) post date: 10.10.06 (10:24 pm) its realy amazing posted by: gopakistan (reply) post date: 10.12.06 (10:57 pm) Reply to: thx dear, have a nice time... |
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This, first-ever parabolic canal in Pakistan, has been constructed under an ADB financed Pehur High-Level Canal Project approved on 22 December 1993 for an amount of US$163.0 million, out of which $127.6 million was a soft loan. The Project completed on 30 June 2005 – 3 years later than the original schedule of completion.
The main goal of the Project is to realize the full agricultural potential of about 40,300 ha in the project area.
This 24.1 km long canal was constructed by a Turkish company (M/s. STFA), under the Project’s irrigation & drainage improvement and development component. The canal provides irrigation water supply in the rain-fed area of Topi, and augments the irrigation water supply in Maira branch of upper swat canal system (USC). The canal takes water from Terbela reservoir through two underground (30 meters deep) pressure tunnels (Gandaf Tunnel, 4.65 km long, with an internal dia 3.8 meter, and Baja Tunnel, 1.29 km long, with an internal dia of 3.5 m). With the construction of this canal, NWFP , for the first time, got irrigation water supplies from the Indus River.
Another interesting feature of this Project is that for the first time in Pakistan, against the conventional supply based irrigation system, a new approach of crop-based irrigation operations has been introduced to provide water (and reduce water wastage), based on crop requirement. Under this system, the tunnel gates at water intake from Terbela reservoir automatically open, and close based on the water supply requirements fed into the software especially developed for the purpose, to ensure that water is supplied only to the extent required, and no water is wasted. This also prevents water-logging due to excessive water supply under the conventional supply based irrigation system.
"This is the outlet of Baja tunnel. From here onward, water travels into the parabolic canal called Pehur High-Level Canal, which joins the Maira branch of Upper Swat Canal"
--AHH AT THT MOMENT AM FELING PROUD COZ I ALSO BELINGS TO THE VILLEGE WHERE THIS CANAL IS SITUATED--