Mapping and Analysis of Irrigation Water Quality in the Coastal Region of Skhirat, Morocco

This study analyzes map irrigation water quality in the region of Skhirat, Morocco. This study involves the evaluation of the physico-chemical quality of the irrigation water using Piper and ULSS diagrams and spatial mapping using GIS. The results showed significant salinization power, and demonstrated that the salinity and alkalinity classes of irrigation water dominating in the region are C3-S1 (i.e., average to poor quality; ‘use with caution’), C4-S1 (i.e., poor quality; ‘exclude sensitive plants and heavy soils’), and C4-S2 (i.e., poor quality; ‘to be used with great care, only in light soils’). The evaluation of the Piper diagram determines two hydrochemical facies. The bathymetric map indicates a shallow level downstream and South-West. The salinity map shows high salinity downstream and upstream. In conclusion, a very alarming degradation of water in terms of salinity is noted in the region.