ASSESSING THE COST AND APPROACHES OF GULLY EROSION CONTROL PROJECT IN GOMBE METROPOLIS, GOMBE STATE, NIGERIA

Abstract

Soil erosion, particularly gully erosion, poses a significant threat to land sustainability, ecological stability, and infrastructure in Gombe Metropolis, Nigeria. This study evaluates the extent of gully erosion, the control measures adopted, and the associated costs of these interventions. Using high-resolution satellite imagery, field observations, and official project documents from state and international agencies, the research identified controlled and uncontrolled gully sites across the metropolis. The findings reveal that while both agronomic and engineering control methods are employed, engineering interventions dominate and are notably costly. The estimated total cost of gully erosion control for 41,090 meters of affected areas stands at ₦16.28 billion, with only 18.4% of the sites fully controlled. Additional non-civil costs, such as resettlement and compensation for project-affected persons, further escalate the financial burden. The study highlights the need for a more holistic, adequately funded, and sustainable approach to erosion control, integrating both local and international support systems.