demonstrates this pattern: unusually high intensity rainstorms were recorded in 2004, 2006, 2008,
and 2011, while abnormally dry years were recorded in 2013, 2015, and 2016-and in 2016. For the
first time ever, the dam serving as the main source of water for Windhoek received no inflows.
Windhoek's water supply is primarily climate dependent; surface run-off captured in surface water
dams is highly susceptible to evaporation, with estimated losses of approximately 50 percent over a
10 year period. Under the climate scenarios, evaporation is predicted to increase 10-15 percent,
further straining water supplies.
Long-term water supply options
In 2003, water planning studies for the central areas of Namibia and Windhoek predicted that demand
would use all the available water by 2013-which came true at the end of that year. But from 2003 to
2013, the area experienced unusually high rainfall, frequently far exceeding the average annual
amounts-and delaying implementation of proposed schemes to augment water supplies. But the
2014-16 drought clearly exposed the system's shortcomings, and several emergency schemes just
barely managed to save the capital city from disaster.
There are no feasible long-term supply options within a 300km radius of Windhoek. Today, two long-
distance supply options are undergoing feasibility studies:
1. Linking of the current supply system for the central areas and Windhoek to the Okavango River,
which is located to the north of Windhoek on the country's border with Angola. This long-distance
water transfer scheme, which would cover approximately 700km, has high infrastructure and
upgrading costs.
2. Desalinate sea water at the coast and transfer it over 365km and up to 1650m above sea level. The
exceptional altitude challenge complicates this long-distance water transfer scheme in terms of
operational cost.
The proposed schemes-which are both plagued by inherent weaknesses and uncertainties-are
considered the only viable long-term options. Regardless, the primary concern is that they are still in
preliminary study phase and are unlikely to be implemented before 2024-which would be more than
a decade after the fast-growing city first exceeded the limits of its water supply.
INSTRUCTIONS
Write only the following six sections of a SHORT FORMAL REPORT
1. Identification
(4)
2. Terms of reference
(5)
3. Three findings
(3)
4. Three conclusions
(3)
5. Three recommendations
(3)
Language and Style are marked out of
(8)
Format and presentation out of
(4)
NOTE: INVENT ALL THE INFORMATION THAT NEEDS TO BE USED WHEN WRITING THE REPORT
5