John D. Njoku

Correlate Mapping of Impervious Surfaces as Flood Risk Assessment Strategy in Owerri, Southeastern Nigeria

John D. Njoku, Kingsley O. E. Ukaegbu, Ikenna E. Osumgborogwu, Anayo D. Udeh & Mercy Telu · Asian Journal of Environment & Ecology · 2017

Owerri is rapidly growing in population and built environment, with corresponding, high increase in pavements or paved surfaces. This study explores the integrated approach of Remote Sensing (RS) and Geographic Information systems (GIS) techniques in flood management with the goa...

Open access Research Article 10.9734/AJEE/2017/33974

Applying Satellite Remote Sensing and GIS Tools in the Study of Gully Erosion

Gordon T. Amanbagara, John D. Njoku & Moses Obenade · Journal of Scientific Research and Reports · 2014

Aim: Gully erosion is the most obvious form of soil erosion in southeastern Nigeria mainly because of the remarkable impressions the gullies make which are also visible manifestation of the physical loss of land due to erosion. In the literature, there are various accounts of the...

Open access Research Article 10.9734/JSRR/2015/12753

Assessing Groundwater Vulnerability to the Activities of Artisanal Refining in Bolo and Environs, Ogu/Bolo Local Government Area of Rivers State; Nigeria

Gordon T. Amangabara & John D. Njoku · International Journal of Environment and Climate Change · 2012

Artisanal refining typically involves primitive illegal stills in which crude oil is boiled and the resultant fumes are collected, cooled and condensed in tanks to be used locally for lighting, energy or transport. The distilleries are heated on open fires fed by crude oil that i...

Open access Research Article 10.9734/BJECC/2012/1088