@article{fdi:010085082,
  title = {{I}mpact of withdrawals on karst watershed water supply},
  author = {{L}abat, {D}. and {A}rgouze, {R}. and {M}azzilli, {N}. and {O}llivier, {C}hlo{\'e} and {S}ivelle, {V}.},
  editor = {},
  language = {{ENG}},
  abstract = {{K}arst systems consist of heterogeneous aquifers characterized by non-linear hydrogeological behavior. {T}his is intrinsically linked to the coexistence of saturated versus unsaturated, open-channel versus closed-conduit flow and laminar versus turbulent flows within these aquifers. {T}hese multiple dualities together with a lack of knowledge of their internal structure lead to increasing difficulties in the management of groundwater resources related to karst aquifers. {H}owever, karst aquifers constitute strategic fresh water resources and many stakeholders carry out withdrawals sometimes continuously or centered on the period of low water level as for the irrigation. {T}hese withdrawals generate discharge decreases that can constitute sources of conflicts between upstream and downstream users of the resource. {I}n this study, we propose a methodology to assess the impact of withdrawals on the spring discharge of a karst aquifer based on a conceptual non-linear reservoirs model. {T}his methodology is applied to the second largest karst system in {F}rance: {T}he {T}ouvre karst system ({L}a {R}ochefoucauld). {T}he simulated influence of the total withdrawals on runoff deficit is larger than the total withdrawals in relationship with the non-linearity of the conceptual models. {G}lobally, this impact is about one and a half of the total withdrawal depending of the year under consideration. {M}oreover, we show that it also implies a decrease from 10% to 20% of the low-flow annual discharge. {T}he next step will be to also address the issues raised by the climate change projections.},
  keywords = {karst hydrology ; anthropic pressure ; fresh water supply ; {FRANCE} ; {LA} {ROCHEFOUCAULD}},
  booktitle = {},
  journal = {{W}ater},
  volume = {14},
  numero = {9},
  pages = {1339 [15 p.]},
  year = {2022},
  DOI = {10.3390/w14091339},
  URL = {https://www.documentation.ird.fr/hor/fdi:010085082},
}