Hardap Dam in dire need of water inflow

Hardap Dam in dire need of water inflow
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The Hardap Dam near Mariental is in dire need of more water inflow after it has only reached 18,9 million cubic metres, which constitutes 6,6%.
The dam supplies water to the residents of Mariental as well as the Hardap Irrigation Scheme, with consumption going up to a total 800 million litres per month.
Namibia Water Corporation (NamWater)’s acting chief for water supply in the south, Andries Kok, who took measurements of the dam on Monday explained that the poor inflow was caused by the below-average rainfall recorded during the last two rainy seasons.
He said water supply to the irrigation scheme will be stopped at 4,8%, which is 14 million cubic metres.
“Originally, it was planned to stop supply to the scheme by the end of December 2019, but due to saving measures implemented, the date will most probably be extended to the end of January 2020. A new depletion analysis will be done within the next week to determine the final date,” Kok said.
He added that once the supply is stopped to the irrigation scheme, there will be enough water to supply the town until the end of March 2021.
“This is when the dam reaches 1,5% equalling 4,3 million cubic metres. This means we still have two rainy seasons available to get inflow into the dam, from the current season as well as the 2020/21 rainy season,” he added.
Should the level reach 1,5% at the end of March 2021, the dam will experience the so-called “dead storage” area when levels are below the normal abstraction points.
“Water will still be available but will be abstracted by means of additional pumps that need to be installed into the dam basin. Once irrigation water is no longer available, more stress will be put on the potable water system,” Kok indicated.
For this reason, Kok said they are busy with the installation of a booster station on the potable water system, to be able to supply more potable water than normal.
This will however not be finished by end of January, resulting in difficulty to supply enough potable water as from February until the booster station is finished, a few months later.