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Microbiological
test for water sample
Melamchi Projects
A long term Water Supply Development Project
for the Kathmandu Valley towns was initiated in the late eighties
under which pre-feasibility and feasibility studies identified
(in 1991) the Melamchi river out-side the valley in the north-east,
45km. Away from the Valley and lying in the neighboring Sindhupalchowk
district. It is one of the important tributaries of Indrawati
River and the run-of-the-river diversion scheme was proposed
near Melamchi gaon (village), near Helambu. The system under
proposal is a 26km. Tunnel, 12-16 sq.m. cross sectional area
carrying 10 cum. Of raw water (ultimate) under gravity runs
to the Mahankal gaon near Sundarijal Water Treatment Plant site.
A new Water Treatment Plant is to be constructed to treat 170
mld raw water that will be serviced to the five Municipal towns
including the Capital and the adjoining villages in and around
the Valley. Other works will include constructions of 16 big
service reservoirs at high points, bulk transmission (Distribution
Trunk Mains). Urban distribution network system rehabilation
inside the core areas, etc. The feasibility study gave the Project
cost estimated to be around US $ 275million (in 1991) and now
up-dated to be around US $ 460 million. Detail Engineering Design
is currently underway on this mega-project. Many countries/Bilateral/Multilateral/Lending
Agencies Development Banks are ready to finance His Majesty’s
Government for this Melamchi Project till the completion stage,
which should bring in additional 170 mld of drinking water.
The full development of the long term Water Supply Project in
3 stages e.g., Melamchi river (170 mld), Yangri river (170mld)
and Larke river (170 mld) will bring in a total of 510 mld water
to the Capital, which will be sufficient till 2030 AD.
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