Geomorphological Characteristics of the Karadua River Basin Dutsin-Ma, Katsina State, Nigeria

Shehu Garba, A. A. Mohammed, M. M. Muhammad

Abstract


The presentation here so far analyses the geomorphology of the Karadua basin which is the study area. Three (3) major geographical regions were identified and mapped out. These are the upland plains, Lowland plains and the Riverine plains which formed the major division of the Geomorphological map of the area produced for the purpose of this work. Within these major divisions, other smaller landforms were identified and studied. They ranges from the highest hill or rock outcrop to the lowest lying borrow pit or quarry which are the common feature of the area. The geomorphology of the Karadua Basin, which is generally classified as homogenous undulating plains, was found to be a reflection of many natural as well as anthropogenic processes of the past and in current times. The common processes in operation were identified and the most spectacular features resulted were identified and studied. The common geomorphologic processes are denudation and the most common are rill and gully erosion. These were found to have wrecked many places and affected land use surfaces to the extent that over 1.6% of the total land area has been damaged by gully erosion. The rate of retreat in sampled gullied amount to as high as 36cm/yr and averaged more than 19cm/yr. The natural properties of the local soils and the tropical climate type greatly contribute to the spread of soil erosion, particularly the gully erosion, in the study area.


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