Journal Article

FZJ-2023-00240

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Hydrochemical Characterization of the Continental Terminal Aquifer in Cap Skirring Area, Southwestern Senegal

Diouf, O. C. (Corresponding author) ; Weihermüller, L.FZJ* ; Dieng, N. M. ; Diedhiou, M. ; Beltoungou, E. ; Faye, S. ; Faye, S.

2022
Science Publishing Group New York

This record in other databases:

Please use a persistent id in citations: http://hdl.handle.net/2128/33454  doi:10.11648/j.ajwse.20220804.11

Abstract: Cap Skirring area is located in the southwestern part of Senegal, where groundwater is the only resource for drinking water supply. The present study helps to assess and determine the most dominant hydrogeochemical processes controlling the groundwater quality in the Cap Skirring area in Southwestern Senegal. For these purposes, 23 groundwater samples have been collected and analyzed for pH, Ca2+, Mg2+, Na+, K+, SO42-, Cl-, HCO3- and NO3- concentrations and the indices total hardness (TH) as well as total dissolved solid (TDS) were calculated based on the analytical results. The analysis indicated that the groundwater in the study area is generally soft. Comparison of these chemical data with the WHO drinking water standards showed that WHO standards were exceeded mainly in wells D30 (Ca2+, HCO3-) and PD122 (Cl-, NO3-, Na+ and K+), both located in the eastern part of the area. The Piper, Shadha, and other bivariate diagrams presenting the geochemical facies of the groundwater showed the HCO3 – Ca – Mg as the dominant water type (65.2 %) followed by the Cl – Na – K water type (21.7 %), and the Cl – Ca – Mg water type (13.0 %). This hydrogeochemical characterization indicates that the groundwater is mainly recharged by the high seasonal rainfall that occurs in the area. Salinization conditions and reverse ion exchange reactions were also observed in the some groundwater samples. This salinization process was mainly found along the eastern part (“bolong”) of the study area in samples taken at PD 122, PD 144, PD 55, and Marie Diatta or near the Atlantic coast (PD 154).

---

Contributing Institute(s):

1. Agrosphäre (IBG-3)

Research Program(s):

1. 2173 - Agro-biogeosystems: controls, feedbacks and impact (POF4-217) (POF4-217)

Appears in the scientific report 2022

---

Database coverage:
;

---