Assesment of the Morphometry of Gullies in Kastina-Ala, Nigeria

The analysis of morphometry characteristics of four gullies in Katsina-Ala local government area of Benue State was carried out to assess the severity and economic losses associated with it. Field inspection at various sites and reduced level against various chainages at the identified gully sites were carried out in attempt to define the initial and final geometry of the gully sites. The mophometric characteristics of length, depth width, slope and shape were evaluated on site by geophysical survey of dumpy and physical measurement. Mathematical model of simpson’s rule was used in quantifying the volume of earth lost to gullies. From the analysis of mophometry of these gullies, the total volume of earth lost is standing at 17,680.36m 3 covering 737.01m 2 of urban land area. The estimated cost of recovering this area by earth filling is put at N61,500.000.00 which will be an economic set back to the inhabitant of the old urban centre