THE GEOLOGY AND GEOMORPHOLOGY OF GULLY DEVELOPMENT IN AGULU-NANKA AND ITS ENVIRONS, SOUTHEASTERN NIGERIA.
Abstract
Gully erosion is recognized as one of the most destructive forms of land degradation in southeastern Nigeria, with Anambra State—particularly the Agulu–Nanka erosion complex—being severely affected. Unlike sheet or rill erosion, which remain relatively shallow, gully erosion develops deep and steep-sided channels that enlarge quickly, causing extensive damage to farmland, settlements, and infrastructure (Ofomata, 1985; Egboka, 1993). The Agulu–Nanka complex has been described as one of the most catastrophic erosion sites in West Africa, posing serious threats to thousands of residents
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