@article{fdi:010073744,
  title = {{M}od{\'e}lisation pluie-d{\'e}bit et analyse du r{\'e}gime d'un bassin versant semi-aride sous influence nivale. {C}as du bassin versant du {R}heraya ({H}aut {A}tlas, {M}aroc)},
  author = {{H}ajhouji, {Y}. and {S}imonneaux, {V}incent and {G}ascoin, {S}. and {F}akir, {Y}. and {R}ichard, {B}astien and {C}hehbouni, {A}bdelghani and {B}oudhar, {A}.},
  editor = {},
  language = {{FRE}},
  abstract = {{R}iver flow and groundwater recharge in the {M}arrakech region are closely linked to the hydrological dynamics in the {H}igh {A}tlas {M}ountains. {T}o anticipate the effects of climate change in this area where the pressure on water resources is increasing, it is essential to quantify the contribution of snowmelt and rainfall to runoff. {T}his study aims to modeling the runoff of the {R}heraya {R}iver in the {M}oroccan {H}igh {A}tlas (225 km(2), elevations ranging between 1030 and 4165 m.a.s.l.) taking into account its snow component. {F}or this purpose, the {GR}4{J} conceptual and lumped model was applied over the period 1989-2009, coupling it with the {C}ema{N}eige module for semi-distributed snow dynamics. {T}his work allows for an improved characterization of the hydrologic regime of this watershed. {T}he daily snow coverage simulated by {C}ema{N}eige is in good agreement with that extracted from the {MODIS} snow product in the period 2000-2009 ({R}-2 = 0,64). {I}n addition, the simulated daily snow water equivalent is consistent with that measured at a weather station (2004-2006, {R}-2 = 0,81). {F}inally, the runoff simulation reproduces quite well the strong seasonal and inter-annual variability. {H}owever, the low {N}ash value obtained as compared to standards (0,45), can be linked to the low quality of runoff measurements (unstable riverbed). {I}n conclusion, the hydrological regime of the {R}heraya {R}iver is pluvio-nival with an unimodal distribution whose maximum in {A}pril is linked with snowmelt. {I}t is at this time of the year that downstream populations are most vulnerable to the flow deficit because irrigated crops come into their growth period.},
  keywords = {{GR}4{J} ; rainfall-runoff modeling ; semi-arid ; snow ; {MAROC} ; {RHERAYA} {COURS} {D}'{EAU} ; {ATLAS}},
  booktitle = {},
  journal = {{H}ouille {B}lanche : {R}evue {I}nternationale de l'{E}au},
  numero = {3},
  pages = {49--62},
  ISSN = {0018-6368},
  year = {2018},
  DOI = {10.1051/lhb/2018032},
  URL = {https://www.documentation.ird.fr/hor/fdi:010073744},
}