The Environmental Impact of Gully Erosion and Its Implications for Soil Loss in Northern Adamawa State, Nigeria

Gully erosion has become a significant environmental issue that dramatically contributes to soil degradation and poses adverse effect on soil fertility, water quality, and ecosystem health worldwide. This study investigates the extent and impact of gully erosion on Northern Adamawa soils, focusing on Madagali, Michika, Mubi North, Mubi South and Maiha Local Government Areas. A total of 163 gully sites was randomly sampled for Studies. Using a 30-meter measuring tape and levelling staff, the dimensions (Mean width, Mean Depth and Length) of each gully were measured for soil lose estimation. The volume of displaced soil was calculated using the Field Office Technical Guide (FOTG).The study reveals a severe gully erosion problem in the area, marked by 163 gullies with a total length of 12,349.4 meters. The average gully dimensions 4.94 meters wide at the top, 3.46 meters at the bottom, and 1.41 meters deep indicate active widening from surface runoff. The total displaced soil volume is 73,133.15 cubic meters, translating to an annual soil loss of approximately 58,471.05 tonnes. These findings highlight significant environmental impacts, including soil fertility loss, decreased agricultural productivity, and increased susceptibility to flooding and land degradation. The study underscores the urgent need for comprehensive soil conservation and land management strategies, including reforestation, terracing, and community engagement, to mitigate these adverse effects and restore environmental stability.