Tag Archives: stormwatermanagement

Addressing Nigeria’s Water Pollution Crisis: The Role of Storm Water Management

By John Cee Onwualu (FNSE, FNICE, FNIWE, P.E., R.ENG)

Understanding the Environmental Challenge

Water Pollution: A Major Crisis in Nigeria

Nigeria, the most populous country in Africa, is grappling with a severe environmental crisis – water pollution.

Despite its wealth of water resources, including rivers, lakes, and underground aquifers, the nation struggles to provide its citizens with clean and safe drinking water.

This crisis is exacerbated by poor storm water management practices in Nigerian cities.

The Role of Storm Water in Pollution

Storm water, the excess water accumulated during heavy rainfall, plays a crucial role in water pollution.

In urban areas, this water gathers pollutants such as trash, chemicals, and sediment as it flows through streets and other surfaces.

This contaminated storm water ultimately finds its way into water bodies, compromising water quality and posing a significant threat to public health.

Factors Contributing to Poor Storm Water Management

Rapid Urbanization and Infrastructure Challenges

The link between water pollution and inadequate stormwater management can be attributed to rapid urbanization and insufficient infrastructure development.

As urban populations grow, so does the demand for housing and infrastructure. Consequently, the construction of impermeable surfaces like roads and buildings impedes the natural absorption of stormwater, leading to rapid runoff and increased pollution.

Inadequate Drainage Systems

Most Nigerian cities lack adequate stormwater management systems. Existing drainage infrastructure is often outdated, poorly maintained, or nonexistent.

This deficiency exacerbates flooding, causing damage to property and exacerbating water pollution. During floods, sewage and other hazardous substances mix with stormwater, posing serious health risks.

Lack of Awareness and Enforcement

Another significant factor contributing to poor stormwater management is the lack of awareness and enforcement of environmental regulations.

Many industries and businesses in Nigeria lack proper waste management systems, resulting in the release of untreated wastewater into storm drains.

This further contaminates water sources and harms the environment and public health.

Consequences and Urgent Actions Needed

Far-Reaching Consequences

The consequences of poor stormwater management and water pollution are extensive. Contaminated water sources not only jeopardize clean drinking water, but also impact the livelihoods of communities dependent on fishing and agriculture.

Moreover, water pollution facilitates the spread of waterborne diseases, posing severe health risks, particularly to vulnerable populations.

Linking the upstream and downstream stormwater channels at Owa-Alero in Ika Notth East L.G.A, Delta State
Linking the upstream and downstream stormwater channels at Owa-Alero in Ika Notth East L.G.A, Delta State

Urgent Action Required

To address the nexus between water pollution and inadequate stormwater management, immediate action is imperative.

The government must invest in upgrading existing drainage systems and constructing new ones to manage stormwater effectively.

Strict enforcement of environmental regulations is necessary to ensure compliance with waste management practices.

In addition, public education campaigns are essential to foster responsible behaviour among citizens.

Conclusion: Collaborative Efforts for a Sustainable Future

In conclusion, the interconnection between water pollution and poor stormwater management poses a significant threat to Nigeria’s environment and public health.

Addressing this complex issue requires coordinated efforts from the government, industries, and citizens. Only through collective action can we safeguard clean and safe water for future generations.

References

Obeta, M. C., & Ugwu, J. N. (2019). Urbanization, storm water management, and water pollution: A case study of Enugu, Nigeria. Environmental Monitoring and Assessment, 191(12), 745.

Oyebande, L., Adelekan, B., & Adedeji, O. (2018). Storm water management challenges in Lagos, Nigeria: Implications for water quality and public health. Journal of Environmental Health Science and Engineering, 16(2), 111-120.

Ojekunle, Z. O., Taiwo, A. M., & Odukoya, A. M. (2017). Assessment of storm water quality in selected urban areas of Lagos State, Nigeria. Journal of Environmental Management, 186(Part 1), 120-128.

Obinaju, B. E., Ufodike, E. B. C., & Uchendu, U. C. (2016). Impact of urbanization on storm water quality in Awka, Anambra State, Nigeria. Journal of Environmental Protection, 7(6), 882-891.

Oyedele, D. J., & Olaniyi, S. B. (2015). Urbanization, storm water management, and water pollution: Challenges and solutions in Nigerian cities. International Journal of Environmental Science and Development, 6(11), 825-830.

Akoteyon, I. S., & Akomolafe, G. F. (2014). Storm water management practices in Nigeria: A review of challenges and prospects. International Journal of Environmental Science and Development, 5(1), 75-80.

Odiyo, J. O., & Makungo, R. (2013). Assessment of the impact of urbanization on water quality of selected South African rivers. Environmental Monitoring and Assessment, 185(6), 4793-4805.

Afolabi, A. O., Okonny, U., & Oluwatoyin, O. (2012). Storm water management practices in Ibadan, Nigeria: Challenges and prospects. International Journal of Science and Advanced Technology, 2(10), 66-71.

Ojolo, S. J., Ojolo, S. J., Oladele, I. O., & Afolalu, T. D. (2011). Urbanization and storm water management in Nigeria: Challenges and prospects. African Journal of Environmental Science and Technology, 5(5), 329-338.

Adewole, A. T., & Adesina, G. A. (2010). Storm water management in Ijebu-Ode, Nigeria: Challenges and possible solutions. Journal of Sustainable Development in Africa, 12(6), 111-125.

The urgent need for sustainable stormwater management engineering practices

By John Cee Onwualu (FNSE, FNICE, FNIWE, P.E., R.ENG)

As urbanization continues, the impacts of land-use change on urban hydrology become increasingly severe.

Without sustainable stormwater management practices, cities will face more frequent and severe flooding, erosion, and water pollution.

It is necessary to take an integrated approach to manage stormwater that involves a combination of engineering practices, community engagement, and education. Here are two key takeaways:

Recommeded: The relationship between land-use change and urban hydrology

Summary of challenges and solutions

The challenges of managing stormwater are significant and complex.

However, sustainable stormwater management engineering practices can help to achieve stormwater management goals while minimizing negative impacts.

Examples of such practices include green roofs, bioretention cells, and permeable pavement.

Overall, the impacts of land-use change on urban hydrology highlight the need for sustainable stormwater management engineering practices.

By implementing these practices, we can mitigate the negative impacts of land-use change on urban hydrology and promote more sustainable and resilient urban environments.

Recommended: EXAMPLES OF SUSTAINABLE STORM WATER MANAGEMENT PRACTICES IN URBAN AREAS

Call to action for Sustainable Storm Water Management practices

There is an urgent need to adopt sustainable stormwater management practices in urban areas.

To achieve this, it is necessary to engage the community in the planning process and provide education programs for residents and decision-makers.

Implementing sustainable stormwater management practices is not only beneficial for the environment but provides social and economic benefits too. It’s time to act now!

In conclusion, sustainable stormwater management engineering practices are critical in mitigating the impacts of land-use change on urban hydrology.

By adopting green infrastructure, low-impact development approaches, and integrating land use planning and stormwater management, we can ensure that our cities are resilient and sustainable for generations to come.

The urgency of these practices is clear, and it is essential that we work together to promote and implement them.

Read Also: Challenges posed by traditional Stormwater Management Practices

References


Alshammari, E. et al., 2023. The Impacts of Land Use Changes in Urban Hydrology, Runoff and Flooding: A Review. In: E. Alshammari, et al. eds. Current Urban Studies. Malaysia: Scientific Research Publishing Inc., pp. 120-141.


Bibi & Sambeto, T., 2022. Modeling Urban Stormwater Management in the Town of Dodola based on Land-use and Climate Change using SWMM 5.1. Journal of Hydrology: Regional Studies, Volume 44.
Hale, R. L., 2016. Spatial and Temporal Variations in Local Stormwater Infrastructure Use and Stormwater Management Paradigms over the 20th Century. Urban Drainage and Urban Stormwater Management, 8(7).

Li, L. et al., 2021. The Effect of Urban Land-Use Change on Runoof Water Quality: A Case Study in Hangzhou City, Hangzhou City: Environmental Research and Public Health.

Wu, J. et al., 2013. Using the Storm Water Management Model to predict Urban Headwater Stream Hydrological response to Climate and Land cover change. Hydrology and Earth System Sciences, 17(12), pp. 4743-4758.
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Impacts of land-use change on Urban Hydrology and the need for Sustainable Storm Water Management Engineering Practices

By John Cee Onwualu (FNSE, P.E., R.ENG., M.ASCE)

Urbanization and the resultant land-use change have a profound impact on the hydrology of a region. As natural vegetation is replaced with impervious surfaces such as roads, parking lots, and buildings, the way rainwater and stormwater are managed is altered.

Traditional stormwater management practices, such as gray infrastructure, are often insufficient to handle increased runoff and can cause downstream flooding and water quality issues. In response, there is an urgent need for sustainable stormwater management engineering practices.

This article will explore the impacts of land-use change on urban hydrology, the challenges posed by traditional stormwater management practices, and the sustainable stormwater management practices that can address these challenges.

In addition, the article will discuss the importance of community engagement and education in promoting sustainable stormwater management practices.

A Peep into Land-use Change on Urban Hydrology

Land-use change can have significant impacts on urban hydrology, including changes in runoff and flooding. The development of land-use causes a rapid increase in impervious surfaces, which reduces infiltration and increases surface runoff.

This can lead to increased flooding and erosion, as well as changes in water quality due to increased pollutants in runoff. Climate change can also exacerbate these impacts by altering precipitation patterns and intensities.

To address these issues, sustainable stormwater management engineering practices are needed. This includes the use of green infrastructure, such as rain gardens and green roofs, to increase infiltration and reduce runoff.

In addition, Storm Water Management Model (SWMM), can be used to predict hydrological responses to land-use and climate change. These models can help inform decision-making and planning for sustainable stormwater management practices.

References

Alshammari, E. et al., 2023. The Impacts of Land Use Changes in Urban Hydrology, Runoff and Flooding: A Review. In: E. Alshammari, et al. eds. Current Urban Studies. Malaysia: Scientific Research Publishing Inc., pp. 120-141.

Bibi & Sambeto, T., 2022. Modeling Urban Stormwater Management in the Town of Dodola based on Land-use and Climate Change using SWMM 5.1. Journal of Hydrology: Regional Studies, Volume 44.

Hale, R. L., 2016. Spatial and Temporal Variations in Local Stormwater Infrastructure Use and Stormwater Management Paradigms over the 20th Century. Urban Drainage and Urban Stormwater Management, 8(7).

Li, L. et al., 2021. The Effect of Urban Land-Use Change on Runoof Water Quality: A Case Study in Hangzhou City, Hangzhou City: Environmental Research and Public Health.

Wu, J. et al., 2013. Using the Storm Water Management Model to predict Urban Headwater Stream Hydrological response to Climate and Land cover change. Hydrology and Earth System Sciences, 17(12), pp. 4743-4758.

The importance of community engagement and education in sustainable storm water management

By John Cee Onwualu (FNSE, FNICE, FNIWE, P.E., R.ENG)

Owa-Alero Stormwater project in Ika North East L.G.A, Delta State
Owa-Alero Stormwater project in Ika North East L.G.A, Delta State

Implementing sustainable stormwater management practices requires a collaborative effort between residents, decision-makers, and engineers.

It is necessary to engage the community in the planning process and educate stakeholders on the importance of sustainable stormwater management practices. Here are two examples of community engagement and education practices:

Engaging stakeholders in the planning process

Stakeholder engagement is critical in the planning process of sustainable stormwater management practices.

Engaging community members and local businesses can provide valuable insight into the potential impacts and benefits of different stormwater management strategies.

Moreover, involving the public in the decision-making process can increase support for sustainable stormwater management projects.

EXAMPLE OF STATEHOLDERS ENGAGEMENT DURING PLANNING STAGES OF OSUBI STORMWATER CONTROL & MANAGEMNT

Education Programs for Residents and Decision-makers

Education programs for residents and decision-makers are essential in promoting sustainable stormwater management practices.

These programs can raise awareness of the importance of managing stormwater runoff sustainably and provide information on the benefits of implementing green infrastructure.

Education programs for decision-makers can also help to ensure continued support for sustainable stormwater management practices.

References


Alshammari, E. et al., 2023. The Impacts of Land Use Changes in Urban Hydrology, Runoff and Flooding: A Review. In: E. Alshammari, et al. eds. Current Urban Studies. Malaysia: Scientific Research Publishing Inc., pp. 120-141.

Li, L. et al., 2021. The Effect of Urban Land-Use Change on Runoff Water Quality: A Case Study in Hangzhou City, Hangzhou City: Environmental Research and Public Health.

Wu, J. et al., 2013. Using the Storm Water Management Model to predict Urban Headwater Stream Hydrological response to Climate and Land cover change. Hydrology and Earth System Sciences, 17(12), pp. 4743-4758.

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