@article{fdi:010085088,
  title = {{T}he combination of the quality index, isotopic, and {GIS} techniques to assess water resources in a semi-arid context ({E}ssaouira watershed in {M}orocco)},
  author = {{R}afik, {A}. and {B}ahir, {M}. and {B}eljadid, {A}. and {C}hehbouni, {A}bdelghani and {D}hiba, {D}. and {O}uhamdouch, {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n arid and semi-arid zones, water resources remain unknown in terms of quality and quantity. {T}he current paper aims to evaluate the water quality for drinking and irrigation purposes within the {E}ssaouira basin and to define the origin and recharge areas of groundwater. 122 samples from the {P}lio-{Q}uaternary, {C}enomano-{T}uronian, and {H}auterivian aquifers, as well as surface water, were taken in {J}uly 2020 are the subject of hydrogeochemical analyses. {B}ased on the results of these analyses, almost all elements are within the allowable limit fixed by {WHO} except {C}l- and {SO}42- in a few points, which require treatment before human consumption. {T}he indices {SAR}, % {N}a, {KR}, {MR}, {CR}, {RSC}, {PI}, and {EC}, show that the water of the study area is adequate for agricultural purposes. {T}herefore, the waters of {E}ssaouira basin meet the standards according to the indices used except for {EC} where almost 50% of the points have poor quality and for {CR} the waters require a non-corrosive pipe. {T}he spatial distribution of {WQI} shows a slight improvement of the quality even though the prolonged drought in the region. {T}his is explained by the impact of the {C}ovid 19 pandemic, which has caused a total shutdown of tourist activity. {T}racing the waters using stable isotopes {O}-18 and {H}-2 show that the recharge of these waters is ensured by precipitation of {A}tlantic origin without significant evaporation and the recharge altitude varies between 400 and 1400 m. {T}he mixing ratios deduced from the mass balance of stable isotopes shows that surface water contributes between 32.16 and 70.42% to the {C}enomano-{T}uronian aquifer recharge. {H}owever, the results of this study could provide valuable information on the water quality for drinking and agricultural purposes.},
  keywords = {{G}roundwater ; {D}rinking and irrigation water quality ; {S}emi-arid ; {S}table ; isotope ; {R}echarge altitude ; {MAROC} ; {ZONE} {ARIDE} ; {ZONE} {SEMIARIDE} ; {ESSAOUIRA}},
  booktitle = {},
  journal = {{G}roundwater for {S}ustainable {D}evelopment},
  volume = {17},
  numero = {},
  pages = {100768 [23 p.]},
  ISSN = {2352-801{X}},
  year = {2022},
  DOI = {10.1016/j.gsd.2022.100768},
  URL = {https://www.documentation.ird.fr/hor/fdi:010085088},
}