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Papers by justin imhanfidon
Science World Journal, Mar 31, 2021
This study examines the changes in the urban growth of the city using empirical methods. First, t... more This study examines the changes in the urban growth of the city using empirical methods. First, the population growth was analysed to track changes between 1978, 1991, and 2016. Secondly, the city's physical, structural expansion was assessed from 1990 to 2016 using earth observation satellite images over the two epochs on supervised classification and the maximum likelihood criterion. The study generated digital maps of land use/land cover changes of the two epochs. Results showed that the developed area had increased from 8.93 % in 1990 to 22.1 % in 2016. Most expansion took place at the periphery of the town. Considering population indices, from 1978 to 1991, there was 9.6% growth and a tremendous growth between 1991 and 2016 of 227.6%. Considering population growth and spatial land cover change increase, there is over 200% growth of both indices. The study recommends the need for the Kaduna State Urban Planning and Development Agency (KASUPDA to continuously monitor urban growth and compliance with the Master plan using similar empirical methods developed in this study.
Global Journal of Environmental Science and Management, 2020
Runoff assessment and estimation is crucial for watershed management as it provides information t... more Runoff assessment and estimation is crucial for watershed management as it provides information that is needed to expedite the course of watershed planning and development. The most commonly used model due to its simplicity and versatility in runoff estimation is the soil conservation service curve number developed by the United States Department of Agriculture. The study estimates the surface runoff of Upper Benue watershed using a geospatial based soil conservation service curve number model. Datasets utilized for this purpose are; Rainfall, land use, digitial elevation model and FAO-Soil. The soil and land use data were intersected to create the curve number grid and database. The curve number grid combined with the mean annual rainfall data from 1990 – 2017 was used to estimate runoff. The result revealed that 61.5% of rainfall was direct runoff while 38.5% of the rainfall was retained by tree/plant cover and soil. The average curve number for the normal condition was calculated...
Science World Journal, Mar 31, 2021
This study examines the changes in the urban growth of the city using empirical methods. First, t... more This study examines the changes in the urban growth of the city using empirical methods. First, the population growth was analysed to track changes between 1978, 1991, and 2016. Secondly, the city's physical, structural expansion was assessed from 1990 to 2016 using earth observation satellite images over the two epochs on supervised classification and the maximum likelihood criterion. The study generated digital maps of land use/land cover changes of the two epochs. Results showed that the developed area had increased from 8.93 % in 1990 to 22.1 % in 2016. Most expansion took place at the periphery of the town. Considering population indices, from 1978 to 1991, there was 9.6% growth and a tremendous growth between 1991 and 2016 of 227.6%. Considering population growth and spatial land cover change increase, there is over 200% growth of both indices. The study recommends the need for the Kaduna State Urban Planning and Development Agency (KASUPDA to continuously monitor urban growth and compliance with the Master plan using similar empirical methods developed in this study.
Global Journal of Environmental Science and Management, 2020
Runoff assessment and estimation is crucial for watershed management as it provides information t... more Runoff assessment and estimation is crucial for watershed management as it provides information that is needed to expedite the course of watershed planning and development. The most commonly used model due to its simplicity and versatility in runoff estimation is the soil conservation service curve number developed by the United States Department of Agriculture. The study estimates the surface runoff of Upper Benue watershed using a geospatial based soil conservation service curve number model. Datasets utilized for this purpose are; Rainfall, land use, digitial elevation model and FAO-Soil. The soil and land use data were intersected to create the curve number grid and database. The curve number grid combined with the mean annual rainfall data from 1990 – 2017 was used to estimate runoff. The result revealed that 61.5% of rainfall was direct runoff while 38.5% of the rainfall was retained by tree/plant cover and soil. The average curve number for the normal condition was calculated...