Figure 13. Piper diagram of groundwater samples collected for this study, including seawater facies for comparison. The red circle denotes seawater, Green squares are inland piezometers, orange triangles are riverside piezometers (<20m from surface water), and the yellow pentagon is from piezometer 119 that captures an aquifer below the quaternary.

From

Dynamics and Interactions between Surface Water, Irrigation Water, and Groundwater in the Senegal River Delta

Abdoul Aziz Gning, Mansour Gueye, Mapathé Ndiaye, Fatou Ngom Diop, Raymond Malou

American Journal of Water Resources. 2020, 8(2), 78-91 doi:10.12691/ajwr-8-2-4