Journal of Environmental Protection

Volume 4, Issue 11 (November 2013)

ISSN Print: 2152-2197   ISSN Online: 2152-2219

Google-based Impact Factor: 1.55  Citations  h5-index & Ranking

Modeling of Quaternary Groundwater Pollution Risk by GIS and Multicriteria Analysis in the Southern Part of Abidjan District (Côte d’Ivoire)

HTML  Download Download as PDF (Size: 1302KB)  PP. 1213-1223  
DOI: 10.4236/jep.2013.411139    4,503 Downloads   6,338 Views  Citations

ABSTRACT

The pollution generated by human activities in the area “Vridi canal-Grand Bassam” puts more at risk the quaternary groundwater that supplies water to a large part of the population of the southern part of Abidjan city. This paper deals with the combined approach of geographic information systems and multicriteria analysis to delineate areas at risk of pollution of groundwater in the study area. The multicriteria analysis also incorporated the statistical and geostatistical techniques for defining the factor ratings and weightings of all the parameters under a GIS environment. The criterion for these factor ratings and weightings was the correlation coefficient of each parameter with the nitrates concentration in groundwater. Two indicators were combined for creating situations of pollution risks according to their importance: the intrinsic vulnerability indicators which combined the depth to groundwater, the net recharge, the slope, the soil media, the unsaturated hydraulic conductivity and extrinsic vulnerability characterized by the land use. The results showed that all to the site presents nitrate pollution risks with 50.7% of moderate risk, and 49.3% of high and very high risks. The areas which present the highest risks of pollution are the densely urbanized communes of Treichville, Marcory, Koumasi, Port-Bouet and Grand-Bassam. The sensitivity analysis indicates that parameters causing high sensitivity on the nitrate pollution risks map are the depth to groundwater and the recharge. The errors committed on the maps establishment are ±0.15%, ±0.40% and ±6% respectively for IV map, EV map and pollution risk map.

Share and Cite:

I. Kouame, A. Douagui, K. Koffi, B. Dibi, L. Kouassi and I. Savane, "Modeling of Quaternary Groundwater Pollution Risk by GIS and Multicriteria Analysis in the Southern Part of Abidjan District (Côte d’Ivoire)," Journal of Environmental Protection, Vol. 4 No. 11, 2013, pp. 1213-1223. doi: 10.4236/jep.2013.411139.

Cited by

[1] Using Water Quality Index for Assessing of Physicochemical Quality of Quaternary Groundwater in the Southern Part of Abidjan District (Côte d'Ivoire)
2019
[2] Contribution of the sensitivity analysis in groundwater vulnerability assessing using the Drastic method: application to groundwater in Dabou region (Southern …
2016
[3] Contribution of the Sensitivity Analysis in Groundwater Vulnerability Assessing Using the DRASTIC Method: Application to Groundwater in Dabou Region (Southern of Côte d’Ivoire)
Journal of Environmental Protection, 2016
[4] Contribution of the sensitivity analysis in groundwater vulnerability assessing using the DRASTIC method: application to groundwater in Dabou region …
2016
[5] CARTOGRAPHIE DE LA VULNÉRABILITÉ INTRINSÈQUE DES EAUX DE SURFACE DU BASSIN VERSANT DU LAC DE TAABO EN CÔTE D'IVOIRE AUX …

Copyright © 2021 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.