DIAGNOSTIC OF THE FACTORS REDUCING THE STORAGE CAPACITY OF THE TOUKOMTORE DAM IN BURKINA FASO
KAMBIRE Sami Hyacinthe; BAGRE Mathias Philippe; BACYE Bernard; YAMEOGO Augustin
KAMBIRE Sami Hyacinthe: National Center for Scientific and Technological Research/Institute of Environment and Agricultural Research (CNRST/INERA), 01 BP 476 Ouagadougou 01, Burkina Faso.
BAGRE Mathias Philippe: Dynamics of Spaces and Societies Laboratory (LDES), Department of Geography, Joseph KI-ZERBO University, 03 BP 7021 Ouagadougou 03, Burkina Faso.
BACYE Bernard: Soil fertility study laboratory, Nazi Boni University, Bobo Dioulasso, 01 BP 1091 Bobo-Dioulasso 01, Burkina Faso.
YAMEOGO Augustin: Human Sciences Laboratory (HSLABO), Norbert ZONGO University, BP 376 Koudougou, Burkina Faso.
ABSTRACT
The Toukomtore dam in Burkina Faso was built as a road embankment to meet the water needs of the populations of the commune of Koubri. The dam’s watershed is not immune to the various climatic and anthropogenic pressures that have caused it to fill up. The objective of this study is to identify the sources of sediment supply to the dam. To do this, the study relies on documentary research, individual interviews with agents of the deconcentrated technical services of the State and users as well as field observations. The results of the study reveal that the sediments in the dam basin come from intense gullying areas, bare areas, bank erosion, market gardening plots and local drains, but also from aggregate extraction sites and brick factories. The results also show that the basin of the dam has lost its initial capacity of reception due to the phenomenon of filling. These results provide indicative elements on the potential origin of the sediments of the dam and are useful for the implementation of the recommendations that have been formulated.
Keywords: Burkina Faso, Dam, Dam filling, Sediment, Erosion