@article{fdi:010086734,
  title = {{L}ong term monitoring of rainwater harvesting tanks : is multi-years management possible in crystalline {S}outh {I}ndian aquifers ?},
  author = {{B}oisson, {A}. and {V}illesseche, {D}. and {S}elles, {A}. and {A}lazard, {M}. and {C}handra, {S}. and {F}errant, {S}ylvain and {M}arechal, {J}. {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n semi-arid regions as in {I}ndia, where agriculture relies on groundwater abstraction, increase of water resources availability through managed aquifer recharge ({MAR}) or rainwater harvesting ({RWH}) is often perceived as a major solution. {S}tudies on these structures' efficiency exists but despite the interest, limited information is available on the temporal variation of their replenishment. {I}n a monsoon driven climate, the inter-annual variations are crucial to assess the potential of water storage and multiyear management especially for these structures. {H}ere, we aim at developing a methodology to reconstruct water storage of {RWH} tanks to further improve our understanding on long term efficiency and multi-years drought management. {T}o tackle this issue, long-term monitoring of a {RWH} tank located in {T}elangana in {S}outhern {I}ndia is achieved by a combination of field monitoring over 2 years (tanks surface and water levels) and a daily water balance compared to {LANDSAT} measurements of the tank area. {T}he procedure allows reconstructing the tank filling dynamic over a 14-years period at a daily time step and show the extreme variability of the tank filling level. {D}uring this period, the yearly maximum tank volume ranges from 8650 to similar to 200 000 m(3). {O}n the 14-years period, the tank reach its maximum capacity only once and, for 1/3 of the time, yearly maximum replenishment is below 15% of its capacity. {T}he surface water availability remains limited in time since the tank dries-up annually, except for 2 years. {H}owever, water percolation to the aquifer is slightly enhanced for some years. {D}uring this monitoring period, very few extreme raining events (6) contribute for more than 50% of the collected volume. {T}his observation highlights (1) the dependency of the structure to extreme storm events, (2) the limited capacity for a multi-year's management and (3) the farmers vulnerability to successive droughts.},
  keywords = {crystalline rocks ; {I}ndia ; managed aquifer recharge ; percolation tank ; rainwater harvesting ; remote sensing ; water budget ; {INDE}},
  booktitle = {},
  journal = {{H}ydrological {P}rocesses},
  volume = {36},
  numero = {12},
  pages = {e14759 [16 p.]},
  ISSN = {0885-6087},
  year = {2022},
  DOI = {10.1002/hyp.14759},
  URL = {https://www.documentation.ird.fr/hor/fdi:010086734},
}