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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/10580

Title: Change detection on the Volta river due to the construction of the Kpong dam using remote sensing techniques
Authors: Osei Jnr., E. M.
Amoah, A. S.
Prah, B. E. K.
Anyah, F. K.
Addo-Gyan, K. A.
Keywords: Volta River
Kpong Dam
Supervised Classification
Land cover changes
Landsat images
Issue Date: Apr-2016
Publisher: Journal of Geomatics
Citation: Journal of Geomatics: Vol 10 No. 1 April 2016
Abstract: Construction of dams brings about changes and this is the situation on the Volta River with the construction of the Kpong dam. The aim of this study is to detect these changes and the trend of change after some years of construction of the dam. Topographic map of the lake (1974), Landsat Thematic Mapper (TM) image (1990), Landsat Enhanced Thematic image (2000) and Landsat (UTM) image (2010) were used. The images were georeferenced and classified into six (6) classes namely, closed forest vegetation, open forest vegetation, dense shrub, grass/herbaceous cover, built up/bare surfaces and water body for the purpose of our study, using supervised classification. Maps were produced to show the changes in the land cover features. Careful observations of the produced maps showed that the most dominant change happened after the construction of the dam. wherebythe river overflew its boundary submerging some islands and communities along the river.This caused the Islands to reduce from 340.607ha in 1974 to 319.959ha in 1990 whilst the lake increased from 2266.398ha in 1974 to 4007.07ha in 1990. After that the water increase has been gradual and all other changes have been as a result of anthropogenic activities.
Description: An article published by Journal of Geomatics: Vol 10 No. 1, April 2016
URI: http://hdl.handle.net/123456789/10580
Appears in Collections:College of Engineering

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