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|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|
Land cover changes
|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|
|Appears in Collections:||College of Engineering|
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