@article{fdi:010048257,
  title = {{E}stimating the role of a ditch network in groundwater recharge in a {M}editerranean catchment using a water balance approach},
  author = {{D}ages, {C}. and {V}oltz, {M}arc and {B}saibes, {A}. and {P}r{\'e}vot, {L}. and {H}uttel, {O}. and {L}ouchart, {X}. and {G}arnier, {F}. and {N}egro, {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}ater balance variables were monitored in a farmed {M}editerranean catchment characterized by a dense ditch network to allow for the separate estimation of the diffuse and concentrated recharge terms during flood events. {T}he 27 ha central part of the catchment was equipped with (i) rain gauges, (ii) ditch gauge stations, (iii) piezometers, (iv) neutron probes, and (v) an eddy covariance mast including a 3{D} sonic anemometer and a fast hygrometer. {T}he water balance was calculated for two autumnal rain and flood events. {W}e also estimated the uncertainty of this approach with {M}onte {C}arlo simulations. {R}esults show, that although ditch area represents only 6% of the total study area, concentrated recharge appeared to be the main source of groundwater recharge. {I}ndeed, it was 40-50% of the total groundwater recharge for autumnal events, which are the major annual recharge events. {T}his indicate that both, concentrated and diffuse recharge should be taken into account in any hydrological modeling approach for {M}editerranean catchments. {T}his also means that, since they collect overland flow that is often largely contaminated by chemicals, ditches may be a place where groundwater contamination is likely to occur. {T}he uncertainty analysis indicates that recharge estimates based on water balance exhibit large uncertainty ranges. {N}evertheless, {M}onte {C}arlo simulations showed that concentrated recharge was higher than expected based on their area.},
  keywords = {{G}roundwater/surface water interaction ; {D}iffuse recharge ; {C}oncentrated recharge ; {D}itches ; {U}ncertainty assessment ; {H}ydrological budget},
  booktitle = {},
  journal = {{J}ournal of {H}ydrology},
  volume = {375},
  numero = {3-4},
  pages = {498--512},
  ISSN = {0022-1694},
  year = {2009},
  DOI = {10.1016/j.jhydrol.2009.07.002},
  URL = {https://www.documentation.ird.fr/hor/fdi:010048257},
}