Tributaries to the River Niger Within Asaba, DELTA STATE, NIGERIA by engr. john cee onwualu

Asaba is situated at the western bank of River Niger, overlooking the point where the Anambra River flows into it.  It is sandwiched between Anwai in the North, Issele-Azagba in the West, Ibusa in the South, and River Niger in the East.  

The eastern axis of the territory is marked with low relief that falls to about 22 metres above mean sea level, while the western axis shows the features of high relief that rises to about 175 metres above mean sea level.

The 2006 census shows that Asaba had a population of 149,603.  Asaba has a large population of Igbo-speaking people, but her position as Delta State Capital has brought her a cosmopolitan population drawn from other ethnic nationalities such as Urhobo, Isoko, Ijaw, Itsekiri, Hausa and Yoruba people, etc. 

Its geographical location lies between latitude 060 15’ 17.84” N and 060 09’ 38.49” N and longitude 060 36’ 23.48” and 060 45’ 13.35” E as shown in Figure 1.  Asaba lies in a plain between 88m to 41m, and about sixty-five percent (65%) within this plain is sitting in a flat terrain, which is between 44m – 41m.

There are some nature-based drainage routes that are tributaries to River Niger within Asaba, such as Iyi-Abi that is in the South, and Anwai River in the North-East.  The project section covers only an area of about 8,521.24 hectares (85.212-sqkm).

Flooding: A Global Warming Aftermath by Engr. John Cee Onwualu

Climate change which is a direct effect of global warming has brought extreme weather changes to our environment, such as sea-level rise, more frequent rainfall with its associated flooding. The effects of these extreme changes have brought more flooding in our Cities, especially Asaba, Warri, Effurun, and Environs since they lie within the Niger Delta region of Southern Nigeria.

Despite these extreme weather changes from global warming, less attention is being given to the management, and control of stormwater by the government. The excess stormwater leads to the loss of agricultural farmlands, contamination of groundwater and rivers, and loss of lives and property of immeasurable values.

Today, due to the global climate change, Asaba, Warri, Effurun, and its environs are experiencing more months and frequent rainfall rather than the old known pattern of six months dry and six months rainy seasons. The effect on these cities and environs has defied the efficacy of existing drainage systems put in place by government and corporate bodies over the years. Hence, there was an urgent need by the government of Delta State to study and construct sustainable drainage systems for the management and control of Stormwater in Asaba, Warri, Effurun, and Environs.

This desire led to the Engineering Study and Design conducted in Asaba, Warri, Effurun, and Environs. Using interviews of locals, participatory meetings, and engineering surveys more in-depth knowledge of the flooding and causes was gathered.

The study looked at how overland drainages can be incorporated into nature-based gifts, such as Valleys, Waterways, and Rivers for the safe evacuation of the excess runoff generated from the environment.

Results obtained showed that improving the efficiency of these Natural Watercourses and Rivers would bring better management and control of the outfalls of both existing and new drainages into these Natural Watercourses. For this to be successful, the inhabitants must be aware of the environmental hazards associated with blocking of Valleys and Waterways with structures and dumping of waste materials into Storm Sewers and Drains, which would create blockages for the efficient evacuation of the Stormwater generated from the Environment.

Recommended Actions for a Young Engineer-2 by Engr. John Cee Onwualu

IMAGINATION

Imagination is another challenge to a young engineer’s career.

An engineer must have the power of imagination. Every engineering product is a creation of the engineer’s imagination from the astral world. Such imagination should transform into an acceptable and useful product for the sustainability of the environment and mankind.

An engineer is a philosopher who can create ideas from the astral environment and by his application of the scientific and natural laws, make life meaningful for man and his environment. So, if one is not capable of doing so, then one is in the wrong profession.


GET INVOLVED IN TECHNICAL COMMITTEE WORKS

Getting involved in technical committee works is part of the challenges that shape up a young engineer.

Senior partners in the engineering profession should create opportunities for younger engineering professionals to serve in various committees, such as codes and standards committees. This will make them understand the origins of some of the codes and the reasons for their application in engineering works. This will also shore up their confidence level in their engineering career to defend their work without fear.


TRAIN TO OBTAIN THE PROFESSIONAL LICENCE

Training to obtain a professional licence is a great challenge and one of the pre-requisites for making an engineering career fulfilled. The registration standard in Nigeria recommends a minimum of four years of practice to become eligible for Corporate Registration with the professional body (Nigeria Society of Engineers) and thereafter, with Council for Regulation of Engineering in Nigeria, COREN.

This registration will become easy for a young engineer who, from the beginning, accepts to undergo training and mentorship under a senior partner in his or her chosen professional career. Registration with the engineering body is supposed to create confidence, courage, and authority for the young engineer to undertake serious engineering works.

This means, with the licence issued by COREN, they are authorised to practice within the Federal Republic of Nigeria as engineers and are responsible for the safe use of the structure or infrastructure they design or develop for public use.

Recommended Actions for a Young Engineer-1 by Engr. John Cee Onwualu

HUNGER FOR KNOWLEDGE
This is one of the greatest steps to make you succeed as a professional engineer. As an Engineer, you must have that strong desire and willingness to learn new technical skills and apply the scientific and mathematical principles acquired during your engineering education.

This will enable you to create engineering designs in accordance with the code of practice and standards governing the engineering profession, which products will meet all safety and structural requirements for the comfort of mankind.

HUMILITY AND SINCERITY
Humility and Sincerity are parts of the challenges that shape a successful engineering career. A young Engineer desirous of growth in his or her career must follow the superiors with humility and sincerity coupled with a strong desire to learn.

These are the stimuli that your superiors want to see in you. It will motivate them to teach you the basic technical steps in your engineering field which most often defer in arrangements from textbook methods. This is where you learn how to correlate the academic work taught in engineering schools with what is practiced in the real world of work.

COURAGE AND INTEGRITY
Courage and Integrity are part of the challenges for a successful engineering career. You must be courageous and honest enough to approach senior partners/mentors in your profession to guide you through some of the basic steps needed in your early design works. Their technical review inputs on your work will make you a better Engineer.

Do not assume you know it, because many of our engineering personnel today lack that quality training and mentorship they should have obtained at their formative stage. You must eliminate fear from your mind when making decisions on design problems. Be courageous enough to take calculated risks and make decisions based on available information. It is important to note that to be a good engineer requires you to exhibit a character of courage and integrity, just as the habit of cleanliness is to the Surgeons in the operating theatre.

WORKING WITH STANDARD ENGINEERING CODES by Engr. John Cee Onwualu

The engineering profession is guided by standards, codes, and ethics of practice which set minimum safety guides for the profession. However, because we are in a dynamic world with lots of complexity occurring daily, the codes of practice have also become revolutionised with many countries coming out with their codes of practice to suit the dynamics of their environment.

For this reason, the British Standard (BS) code is now used alongside the European Standard codes (Eurocodes) in many countries, including Nigeria. Most engineering books nowadays come in both British Standard (BS) code and European Standard codes (Eurocodes). The use of either code in design does not invalidate the work of the designer.

It is important to get familiar with recent developments by reading these volumes of codes instead of relying on the use of only familiar and simplified codes.

For a young graduate, probably, the first challenge and one of the major decisions upon graduation from engineering school is the type of job to start with.

This decision is of great consequence because it defines the path to professional development. Some may choose to work as planning Engineers, Quality Engineers, Structural Engineers, Design Engineers, or Site Engineers while some may choose to become Bankers.

The establishment a young engineer chooses to work in may not be much of a problem compared to their personal determination, quality of training, and mentorship. All these put together will have defining roles in their lives as engineers.

IMPROVING PROFESSIONAL EFFICIENCY AND QUALITY OF ENGINEERING PRODUCTS

To further improve professional efficiency and quality of engineering products, Government Agencies authorised with the approving powers can also play the role of external reviewers of technical documents seeking approval.

This will force engineering professionals to conduct their work diligently in accordance with professional codes and ethics, and produce quality jobs that will not be subjected to an embarrassing rejection by the approving authorities. It will also discourage quacks from the profession and reduce the incessant cases of infrastructural failures that are recorded almost on a yearly basis in our Country.


It is encouraging to note that some States in the Federal Republic of Nigeria, like Lagos, Federal Capital Territory – Abuja, and Rivers have been implementing external review checks on Technical Documents submitted for approval. It will be in the interest of our developing economy if other States in the Federation emulate the earlier mentioned States in this practice.

This can be achieved through the recruitment of professional Engineers to manage these external review functions in the various Establishments vested with such powers. The essence of this is to ensure that set standards and recommended codes of practice are followed in the design and execution of engineering projects.

Most of these practising States require in addition to the calculation sheets and drawings submitted for approval, a letter of undertaking, passport photograph, and a photocopy of the COREN certificate of the designer to accompany these design documents. This alone portrays that enormous responsibility is rested on the Engineer, and demands that confidence, courage, and good quality product delivery for the safe use of the structure for clients and the public is not negotiable.

The Young Engineer: Importance of Training and Mentorship

A young engineer, who is at the threshold of a professional career, transiting from a fresh engineering graduate to a leadership role in engineering should bear in mind that there are many challenges along the journey. The challenges encountered in this transition are of great importance because when the necessary training and mentorship needed at those various stages of engineering are truncated, there is the likelihood to have engineering personnel that lack courage and confidence during execution and defence of their works.

Study and design of stormwater management and control measures for Asaba, Warri, Effurun and environs in Delta State, Nigeria

Presentation at Nigerian Society of Engineers, Asaba Chapter Technical Section of Study & Design of Stormwater Management. & Control by Engr. John Cee Onwualu, Jefcon & Associates Ltd – Engineering Consultants.

ABSTRACT

Climate change which is a direct effect of global warming has brought extreme weather changes to our environment, such as sea-level rise, more frequent rainfall with its associated flooding. The effects of these extreme changes have brought more flooding in our Cities, especially Asaba, Warri, Effurun, and Environs since they lie within the Niger Delta region of Southern Nigeria. Despite these extreme weather changes from global warming, less attention is being given to the management, and control of stormwater by government. The excess stormwater leads to loss of agricultural farmlands, contamination of groundwater and rivers and loss of lives and property of immeasurable values. Today, due to the global climate change, Asaba, Warri, Effurun, and its environs are experiencing more months and frequent rainfall rather than the old known pattern of six months dry and six months rainy seasons. The effect on these cities and environs has defied the efficacy of existing drainage systems put in place by government and corporate bodies over the years. Hence, there was an urgent need by the government of Delta State to study and construct sustainable drainage systems for the management and control of Stormwater in Asaba, Warri, Effurun, and Environs. This desire led to the Engineering Study and Design conducted in Asaba, Warri, Effurun, and Environs. Using interviews of locals, participatory meetings, and engineering survey, more in-depth knowledge of the flooding and causes was gathered. The study looked at how overland drainages can be incorporated into the nature-based gifts, such as Valleys, Waterways and Rivers for the safe evacuation of the excess runoff generated from the environment. Results obtained showed that improving the efficiency of these Natural Watercourses and Rivers would bring a better management and control of the outfalls of both existing and new drainages into these Natural Watercourses. For this to be successful, the inhabitants must be aware of the environmental hazards associated with blocking of Valleys and Waterways with structures and dumping of waste materials into Storm Sewers and Drains, which would create blockages for the efficient evacuation of the Stormwater generated from the Environment.

Read More… https://jefconassociates.com/blog/wp-content/uploads/2020/08/NSE-PRESENTATION.pdf

CHALLENGES OF A YOUNG ENGINEER

In our engineering education, we were taught the use of science and mathematics which form the fundamental basis for the application of the knowledge to interpret, invent, innovate, and solve engineering problems. We live in a dynamic world whose environment is in constant disturbance by humans. These environmental disturbances create complex engineering problems yearning for solutions. But these complex problems are challenges that engineering through the application of the scientific and natural laws are constantly providing solutions for the benefit of mankind.

We design and build super bridges, houses, roads and storm sewers…