Application of GIS and Remote sensing to identify changes in surface water bodies and wetland depletion in the Kumasi Metropolis, Ghana

Principal Investigator(s):  View help for Principal Investigator(s) Benjamin Amoako-Attah, Catholic University, Fiapre Ghana; Benjamin Amoako-Attah, Catholic University, Fiapre-Snyani

Version:  View help for Version V1

Name File Type Size Last Modified
data.zip application/zip 66.1 MB 04/13/2023 01:19:AM

Project Citation: 

Amoako-Attah, Benjamin , and Amoako-Attah, Benjamin. Application of GIS and Remote sensing to identify changes in surface water bodies and wetland depletion in the Kumasi Metropolis, Ghana. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2023-04-13. https://doi.org/10.3886/E188801V1

Project Description

Summary:  View help for Summary This study aimed to use remote sensing and GIS to detect changes in surface water and wetlands in the Kumasi Metropolis over a period of 20 years (2002-2022). Landsat images were processed using the QGIS software, and the Maximum Likelihood Algorithm was used to perform super-vised classification of land use land cover, while raster calculator aided in detecting wetlands by calculation for NDWI, MNDWI, and AWEI. The results showed that the majority of the landscape in the Kumasi metropolis was made up of built-up areas (79.4%), followed by agricultural lands (13.3%) and wetlands (7.3%). Over the 20-year period, built-up areas had gained 20.7% of the total landscape, while agricultural lands and wetlands had lost 16.7% and 4.0%, respectively. All water index methods recorded an increase in non-water cover and a loss of water cover over the period, with surface water decreasing by 5% and non-water land cover increasing by 5%. The study concludes that there have been significant changes in wetlands and surface water land use and land cover within the Kumasi Metropolis over the past 20 years, and recommends the enforce-ment of legislation on surface water protection in the area to protect wetlands

Scope of Project

Time Period(s):  View help for Time Period(s) 1/1/2002 – 1/1/2022
Collection Date(s):  View help for Collection Date(s) 12/20/2022 – 1/18/2023

Methodology

Unit(s) of Observation:  View help for Unit(s) of Observation meters
Geographic Unit:  View help for Geographic Unit zone 30 N

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V1 [2023-04-13]

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