30/08/2026
STATE OF GULLY EROSION IN ANAMBRA STATE 2026
A Community and Environmental Resilience Assessment
Issued by: SWEEP Foundation NG with the support of Anambra State Waste Recyclers Association
Date: August 2026
Theme: From Gully Sites to Green Assets
1. EXECUTIVE SUMMARY
Gully erosion remains one of the most serious environmental and community-development challenges confronting Anambra State. In 2026, the scale and persistence of the problem continue to threaten homes, roads, farmlands, public infrastructure, businesses, livelihoods and, increasingly, the safety and future of vulnerable communities. Today, the state is widely referenced as the gully erosion capital of Nigeria.
The challenge is no longer simply the existence of individual erosion sites. It is the rapid degradation of interconnected landscapes, driven by uncontrolled stormwater, inadequate drainage infrastructure, deforestation, inappropriate land-use practices, poor waste management and increasing climate pressures.
SWEEP Foundation NG and ASWRA therefore calls for a shift from a predominantly reactive, project-by-project approach to an integrated system of prevention, early intervention, ecosystem restoration, community participation and long-term maintenance.
The Foundation believes that erosion sites should not be viewed only as environmental disasters requiring engineering interventions. With the right approach, degraded landscapes can become entry points for nature-based solutions, green infrastructure, community employment, environmental education and climate-resilient local economies.
2. THE STATE OF THE PROBLEM
Anambra is widely recognised as one of Nigeria's most erosion-prone states. Numerous active and emerging gully sites occur across communities, particularly within areas of highly vulnerable terrain.
The situation is characterised by:
- Expansion and deepening of existing gullies;
- Emergence of new erosion channels during heavy rainfall;
- Destruction of roads and access routes;
- Threats to houses and community infrastructure;
- Loss of productive agricultural land;
- Sedimentation and pollution of waterways;
- Displacement and disruption of livelihoods;
- Increased vulnerability of low-income households;
- Rising costs of emergency intervention and infrastructure repair.
The persistence of these impacts demonstrates that erosion must be treated not merely as a construction problem, but as a landscape, water-management, climate and community-resilience challenge.
3. KEY DRIVERS OF GULLY EROSION
SWEEP Foundation NG identifies a combination of environmental, infrastructural and human factors contributing to the continuing erosion crisis.
A. Inadequate Stormwater Management
Poorly designed, undersized or poorly maintained drainage systems concentrate large volumes of stormwater into vulnerable areas, accelerating soil removal and gully formation.
B. Road Construction and Land Development
Roads and other developments can alter natural water flows. Where appropriate drainage outlets, erosion-control structures and downstream protection are absent, runoff can become a major trigger for erosion.
C. Deforestation and Loss of Vegetative Cover
The removal of trees and vegetation exposes soil to direct rainfall impact and reduces the landscape's capacity to absorb and slow down water.
D. Poor Waste Management
Plastic waste, refuse and other materials dumped in drainage channels obstruct water flow, redirect runoff and worsen flooding and erosion.
E. Unsustainable Land Practices
Unplanned development, indiscriminate excavation, poor farming practices and construction on environmentally sensitive terrain can increase landscape vulnerability.
F. Climate Change and Extreme Rainfall
Changing rainfall patterns and increasingly intense rainfall events can place additional pressure on already vulnerable drainage and ecological systems.
4. COMMUNITIES AT RISK
The erosion challenge affects communities across different parts of Anambra State, with particularly visible vulnerability in areas including the Nanka–Agulu–Oko axis, parts of Orumba, Onitsha and surrounding areas, and erosion-prone communities in Nnewi South and other parts of the state.
However, SWEEP Foundation NG cautions against treating erosion as a problem confined to a few famous gully locations.
Every active erosion site has the potential to become a larger landscape disaster if early intervention is delayed.
The priority should therefore be to establish a comprehensive, continuously updated State Erosion Risk Map and Community Gully Register, identifying active, dormant, emerging and high-risk sites.
5. WHAT IS NOT WORKING ENOUGH
Despite significant government interventions and investments over the years, the continued emergence and expansion of erosion sites indicate that intervention alone is not sufficient.
A sustainable response must address the causes and pathways of erosion, rather than concentrating exclusively on repairing the visible gully.
SWEEP Foundation NG is particularly concerned about:
- Limited preventive action before gullies become catastrophic;
- Weak community ownership of erosion-control infrastructure;
- Poor maintenance of drainage systems;
- Fragmented institutional responsibilities;
- Insufficient integration of waste management and drainage planning;
- Limited use of nature-based solutions;
- Inadequate community environmental education;
- Weak local monitoring and early-warning mechanisms.
6. FROM GULLY CONTROL TO LANDSCAPE RESTORATION
SWEEP Foundation NG recommends a new approach:
STOP — STABILISE — RESTORE — REUSE
STOP: Prevent further expansion through appropriate drainage, runoff management and immediate protection of vulnerable areas.
STABILISE: Secure active gullies using appropriate engineering and nature-based interventions.
RESTORE: Rebuild vegetation, soil health, biodiversity and ecological functions around degraded landscapes.
REUSE: Where feasible, transform restored areas into productive community assets through green livelihoods, environmental education, recreation, urban greening and other sustainable uses.
This approach recognises that successful erosion management does not end when construction is completed. A restored landscape must remain protected, monitored and maintained.
7. THE ROLE OF COMMUNITIES
Communities must move from being passive beneficiaries of erosion interventions to becoming active partners in environmental protection.
We recommend the establishment of Community Gully Monitoring Teams responsible for:
- Identifying emerging erosion threats;
- Reporting blocked or damaged drainage;
- Monitoring restored sites;
- Supporting tree planting and vegetation restoration;
- Promoting responsible waste disposal;
- Conducting community sensitisation;
- Supporting early-warning and emergency reporting.
Local knowledge is an important resource. Residents often observe changes in water flow, cracks, drainage failure and soil movement before these become major disaster.
8. THE GULLY PROJECT
In response to this challenge, SWEEP Foundation NG is advancing THE GULLY PROJECT — a community-led climate resilience, erosion control and ecosystem restoration initiative.
The project seeks to demonstrate how communities can participate directly in:
Gully Control + Climate Resilience + Nature-Based Solutions + Ecosystem Restoration + Green Livelihoods + Community Advocacy.
The Gully Project is designed not simply to ask, “How do we stop this gully?”
It asks a broader question:
“How do we restore the landscape, protect the community and turn environmental vulnerability into an opportunity for resilience and green development?”
The project will promote demonstration sites, community mobilisation, environmental education, restoration activities, documentation and solutions journalism so that successful interventions can be replicated across other erosion-prone communities.
9. OUR POLICY RECOMMENDATIONS
SWEEP Foundation NG calls for:
1. A Statewide Erosion Risk and Gully Mapping Programme covering active, emerging and high-risk sites.
2. Integrated drainage and erosion planning for roads, housing developments and other major infrastructure.
3. Community-based early-warning and monitoring systems in erosion-prone communities.
4. Mandatory environmental and stormwater considerations in major construction and land-development projects.
5. Greater adoption of nature-based solutions, including vegetation restoration, bioengineering and watershed management where technically appropriate.
6. Integration of waste management and drainage management, recognising the connection between blocked waterways, flooding and erosion.
7. Long-term maintenance plans for completed erosion-control infrastructure.
8. Community ownership and participation in planning, implementation and monitoring.
9. Youth and women's participation in green livelihoods connected to restoration, tree growing, waste recovery, environmental monitoring and maintenance.
10. A multi-stakeholder Anambra Erosion Resilience Framework bringing government, communities, technical institutions, civil society, development partners and the private sector together.
10. A CALL TO ACTION
The erosion crisis cannot be solved by government alone.
It requires coordinated action from government institutions, traditional and community leaders, engineers, planners, environmental professionals, businesses, development partners, civil society organisations and citizens.
Every blocked drainage channel, indiscriminate dumping site, exposed landscape and uncontrolled stormwater pathway can become the beginning of a larger erosion problem.
Prevention must therefore become everyone's responsibility.
SWEEP Foundation NG and ASWRA calls on the Anambra State Government to strengthen collaboration with communities and civil society organisations and to establish a more integrated, transparent and preventive approach to erosion management.
We also call on Anambra communities to become the first line of environmental defence by protecting drainage channels, reporting emerging erosion threats, restoring vegetation and participating actively in local environmental governance.
11. OUR POSITION
Gully erosion is not only an environmental problem. It is a development problem, an infrastructure problem, a livelihood problem and a community resilience problem.
The objective should not be to simply close gullies.
The objective should be to restore landscapes, protect communities, strengthen infrastructure, create green livelihoods and build a more climate-resilient Anambra.
SWEEP Foundation NG and ASWRA believes:
«Every gully is a warning.
Every degraded landscape is an opportunity for restoration.
Every community can become part of the solution.»
FROM GULLY SITES TO GREEN ASSETS.
Issued by:
SWEEP Foundation NG
Statewide Waste and Environmental Education Foundation
August 2026
