**Acknowledgements**

The author wishes to acknowledge the assistance of TETFUND, a Federal Government of Nigeria sponsored funding agency, for providing the enabling grants for the research that buttressed this discussion. The effective participation of all academic and non- academic staff of the Institute of Erosion studies in the Federal University of Technology Owerri Nigeria, at the various segments of the research, is highly appreciated. My secretary, Ms. Rita Ugwu, who meticulously prepared this manuscript is highly esteemed.
