Drainage system lacks proper design

NATURE is now progressively becoming more violent due to the global warming and climate change.
Mankind has to learn to manage and live with this violent and unpredictable environment.
Yet, here in Papua New Guinea, humans do not learn and manage the forces of nature in a manner that reduces its destructive impact on societies and lives.
This lack of understanding and management of the environment happens in the National Capital District (NDC).
A contractor has been awarded the work to re-construct the drainage system at the Waigani and Tokarara junction traffic light.
The old drainage system has three wide valves each, three at the main Waigani Road and three at the Pitpit Street Road to Morata.
A wide and straight drain connects the valves of the two Roads.
The drainage system was designed to drain as much water during wet and rainy periods without damage to the roads.
The contractor now working on the same drain between the Waigani Road and Pitpit Street Road has changed the original design.
It has narrowed the drain, as well as diverted it to the East at the Waigani Road side.
This is an engineering and design disaster and will become very expensive to maintain over time.
Water from flash floods coming down from Tokarara will now get clogged at the Waigani end of the road.
The force and intensity of the clogged water will destroy both the drainage system and existing road infrastructure at the traffic light junction.
This is now real, given the adverse weather effects emanating from the global warming and climate change.
The cost of maintaining the entire road system at the Waigani and Tokarara junction will increase over time.
The tax payers, unfortunately, will have to pay the cost of this poor engineering and design work by the contractor.
There are no supervising and design engineers from the State and National Capital District Commission who are supposed to be overseeing the design and construction of the new drainage system.
This is very concerning.
Where are the city and State civil engineers?

Concerned