Climate Variability Impact on Groundwater Resources in the Highest Bandama Watershed at Tortiya (Northern Côte D′Ivoire)

Drissa, Soro Tanina; Bernard, Djé Kouakou; Ernest, Ahoussi Kouassi; Soro, Gbombélé; Michel, Kouassi Amani; Emmanuel, Kouadio Konan; Marie-Solange, Oga Yei; Soro, Nagnin

doi:10.11648/j.ajep.20130204.11

Cited by 3 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the Black Volta basin, this increase in land use and land cover changes leads to an increase the discharge at Bui [6]. This effect combined with climate change can also reduce the underground recharge water capacity as it has been confirmed the decline in underground water recharge of Bandama basin [63]. Water availability could be at risk with changes of land use and land cover.…”

Section: Basic Statistical Analysis Of Precipitation and Dischargementioning

confidence: 94%

“…So, the land use and land cover change could affect the hydrodynamic of the river. This has been found in different basins of the region namely Bandama [63], Senegal [55,64], Mono [25,65], Sahelo-Sudanian [61] and elsewhere [66,67]. The land use practices as the construction of large dams could have an influence on surrounding climate [67] and can lead to microclimatic changes [68].…”

Section: Basic Statistical Analysis Of Precipitation and Dischargementioning

confidence: 99%

See 1 more Smart Citation

Assessment of Spatio-Temporal Changes of Land Use and Land Cover over South-Western African Basins and Their Relations with Variations of Discharges

et al. 2018

View full text Add to dashboard Cite

West African basins play a vital role in the socio-economic development of the region. They are mostly trans-boundary and sources of different land use practices. This work attempts to assess the spatio-temporal land use and land cover changes over three South Western African basins (Volta, Mono and Sassandra basins) and their influence on discharge. The land use and land cover maps of each basin were developed for 1988, 2002 and 2016. The results show that all the studied basins present an increase in water bodies, built-up, agricultural land and a decline in vegetative areas. These increases in water bodies and land use are as a result of an increase in small reservoirs, of dugouts and of dam constructions. However, the decline in some vegetative clusters could be attributed to the demographic and socio-economic growth as expressed by the expansion of agriculture and urbanization. The basic statistical analysis of precipitation and discharge data reveals that the mean annual discharge varies much more than the total annual precipitation at the three basins. For instance, in the entire Volta basin, the annual precipitation coefficient of variation (CV) is 10% while the annual discharge CV of Nawuni, Saboba and Bui are 43.6%, 36.51% and 47.43%, respectively. In Mono basin, the annual precipitation CV is 11.5% while the Nangbeto and Athieme annual discharge CV are 37.15% and 46.60%, respectively. The annual precipitation CV in Sassandra basin is 7.64% while the annual discharge CV of Soubre and Dakpadou are 29.41% and 37%, respectively. The discharge varies at least three times much more than the precipitation in the studied basins. The same conclusion was found for all months except the driest months (December and January). We showed that this great variation in discharge is mainly due to land use and land cover changes. Beside the hydrological modification of the land use and land cover changes, the climate of the region as well as the water quality and availability and the hydropower generation may be impacted by these changes in land surfaces conditions. Therefore, these impacts should be further assessed to implement appropriate climate services and measures for a sustainable land use and water management.

show abstract

Section: Basic Statistical Analysis Of Precipitation and Dischargementioning

confidence: 94%

Section: Basic Statistical Analysis Of Precipitation and Dischargementioning

confidence: 99%

Assessment of Spatio-Temporal Changes of Land Use and Land Cover over South-Western African Basins and Their Relations with Variations of Discharges

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Furthermore, the decline in vegetative cover associated with an increase in land use could lead to low underground recharge and high runoff generation during the rainy period. The Bandama basin underground recharge water is decreasing due to the land use and land cover change associated with changing climatic conditions [56]. Consequently, this could contribute to the increase of river discharge [30] as showed in Chemoga river in Blue Nile basin [13] and in Black Volta basins [42,47].…”

Section: Discussionmentioning

confidence: 99%

Climate, Land Use and Land Cover Changes in the Bandama Basin (Côte D’Ivoire, West Africa) and Incidences on Hydropower Production of the Kossou Dam

Kouame

Obahoundje

Diedhiou

et al. 2019

Land

View full text Add to dashboard Cite

Climate and land use/cover changes are potential drivers of change in hydrology and water use. Incidences of these factors on Bandama hydrological basin and Kossou hydropower generation (1981–2016) in West Africa are assessed in this present work. Using Landsat products of United Stated Geological Survey, results show that water bodies areas and land use have increased by 1.89%/year and 11.56%/year respectively, whereas herbaceous savanna, savanna, forest and evergreen forest coverage have been reduced by 1.39%/year, 0.02%/year, 2.39%/year and 3.33%/year respectively from 1988 to 2016. Hydroclimatic analysis reveals that streamflow presents greater change in magnitude compared to rainfall though both increasing trends are not statistically significant at annual scale. Streamflow varies at least four (two) times greatly than the rainfall (monthly and seasonally) annually except during driest months probably due to land use/cover change. In contrast, Kossou hydropower generation is significantly decreasing (p-value 0.007) at both monthly and annual scales possibly due to water abstraction at upstream. Further works are required to elucidate the combined effects of land use/cover and climate changes on hydrological system as well as water abstraction on Kossou generation.

show abstract

Geochemical evaluation of soil, surface water and groundwater around the Tongon gold mining area, northern Côte d’Ivoire, West Africa

Sako

Semdé

Wenmenga

2018

Journal of African Earth Sciences

View full text Add to dashboard Cite

Climate Variability Impact on Groundwater Resources in the Highest Bandama Watershed at Tortiya (Northern Côte D′Ivoire)

Cited by 3 publications

References 9 publications

Assessment of Spatio-Temporal Changes of Land Use and Land Cover over South-Western African Basins and Their Relations with Variations of Discharges

Assessment of Spatio-Temporal Changes of Land Use and Land Cover over South-Western African Basins and Their Relations with Variations of Discharges

Climate, Land Use and Land Cover Changes in the Bandama Basin (Côte D’Ivoire, West Africa) and Incidences on Hydropower Production of the Kossou Dam

Geochemical evaluation of soil, surface water and groundwater around the Tongon gold mining area, northern Côte d’Ivoire, West Africa

Contact Info

Product

Resources

About