Climate-smart tank irrigation: A multi-year analysis of improved conjunctive water use under high rainfall variability

C. Siderius, H. Boonstra, V. Munaswamy, C. Ramana, P. Kabat, E.C. van Ierland, P.J.G.J. Hellegers

Research output: Contribution to journalArticleAcademicpeer-review

11 Citations (Scopus)

Abstract

Although water harvesting is receiving renewed attention as a strategy to cope with increasing seasonal and inter-annual rainfall variability, many centuries-old local water-harvesting reservoirs (tanks) in India are rapidly deteriorating. Easy access to groundwater is seen as one of the major threats to their maintenance and functioning. Potentially, however, conjunctive use of water from rain, tanks and groundwater reserves, supported by proper monitoring, could improve the resilience and productivity of traditional tank irrigation systems. To date, few quantitative multi-annual analyses of such climate-smart systems have been published. To redress this, we assess the sustainability of a rehabilitated tank irrigation system, by monitoring all inputs and outputs over a period of six years (12 cropping seasons). Our results show that during the period considered, improved conjunctive use resulted in a more stable cropping intensity, increased economic water productivity and higher net agricultural income. Groundwater tables were not negatively affected. We argue that improved conjunctive use can considerably reduce the vulnerability of tank irrigation to rainfall variability and thus is a valuable strategy in light of future climate change.
LanguageEnglish
Pages52-62
JournalAgricultural Water Management
Volume148
DOIs
Publication statusPublished - 2015

Fingerprint

tank irrigation
water use
irrigation
irrigation system
climate
rain
rainfall
groundwater
cropping practice
water harvesting
water economics
productivity
irrigation systems
water
monitoring
agricultural income
vulnerability
sustainability
income
climate change

Keywords

  • surface-water
  • tamil-nadu
  • india
  • groundwater
  • management
  • projections
  • efficiency

Cite this

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title = "Climate-smart tank irrigation: A multi-year analysis of improved conjunctive water use under high rainfall variability",
abstract = "Although water harvesting is receiving renewed attention as a strategy to cope with increasing seasonal and inter-annual rainfall variability, many centuries-old local water-harvesting reservoirs (tanks) in India are rapidly deteriorating. Easy access to groundwater is seen as one of the major threats to their maintenance and functioning. Potentially, however, conjunctive use of water from rain, tanks and groundwater reserves, supported by proper monitoring, could improve the resilience and productivity of traditional tank irrigation systems. To date, few quantitative multi-annual analyses of such climate-smart systems have been published. To redress this, we assess the sustainability of a rehabilitated tank irrigation system, by monitoring all inputs and outputs over a period of six years (12 cropping seasons). Our results show that during the period considered, improved conjunctive use resulted in a more stable cropping intensity, increased economic water productivity and higher net agricultural income. Groundwater tables were not negatively affected. We argue that improved conjunctive use can considerably reduce the vulnerability of tank irrigation to rainfall variability and thus is a valuable strategy in light of future climate change.",
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author = "C. Siderius and H. Boonstra and V. Munaswamy and C. Ramana and P. Kabat and {van Ierland}, E.C. and P.J.G.J. Hellegers",
year = "2015",
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Climate-smart tank irrigation: A multi-year analysis of improved conjunctive water use under high rainfall variability. / Siderius, C.; Boonstra, H.; Munaswamy, V.; Ramana, C.; Kabat, P.; van Ierland, E.C.; Hellegers, P.J.G.J.

In: Agricultural Water Management, Vol. 148, 2015, p. 52-62.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Climate-smart tank irrigation: A multi-year analysis of improved conjunctive water use under high rainfall variability

AU - Siderius, C.

AU - Boonstra, H.

AU - Munaswamy, V.

AU - Ramana, C.

AU - Kabat, P.

AU - van Ierland, E.C.

AU - Hellegers, P.J.G.J.

PY - 2015

Y1 - 2015

N2 - Although water harvesting is receiving renewed attention as a strategy to cope with increasing seasonal and inter-annual rainfall variability, many centuries-old local water-harvesting reservoirs (tanks) in India are rapidly deteriorating. Easy access to groundwater is seen as one of the major threats to their maintenance and functioning. Potentially, however, conjunctive use of water from rain, tanks and groundwater reserves, supported by proper monitoring, could improve the resilience and productivity of traditional tank irrigation systems. To date, few quantitative multi-annual analyses of such climate-smart systems have been published. To redress this, we assess the sustainability of a rehabilitated tank irrigation system, by monitoring all inputs and outputs over a period of six years (12 cropping seasons). Our results show that during the period considered, improved conjunctive use resulted in a more stable cropping intensity, increased economic water productivity and higher net agricultural income. Groundwater tables were not negatively affected. We argue that improved conjunctive use can considerably reduce the vulnerability of tank irrigation to rainfall variability and thus is a valuable strategy in light of future climate change.

AB - Although water harvesting is receiving renewed attention as a strategy to cope with increasing seasonal and inter-annual rainfall variability, many centuries-old local water-harvesting reservoirs (tanks) in India are rapidly deteriorating. Easy access to groundwater is seen as one of the major threats to their maintenance and functioning. Potentially, however, conjunctive use of water from rain, tanks and groundwater reserves, supported by proper monitoring, could improve the resilience and productivity of traditional tank irrigation systems. To date, few quantitative multi-annual analyses of such climate-smart systems have been published. To redress this, we assess the sustainability of a rehabilitated tank irrigation system, by monitoring all inputs and outputs over a period of six years (12 cropping seasons). Our results show that during the period considered, improved conjunctive use resulted in a more stable cropping intensity, increased economic water productivity and higher net agricultural income. Groundwater tables were not negatively affected. We argue that improved conjunctive use can considerably reduce the vulnerability of tank irrigation to rainfall variability and thus is a valuable strategy in light of future climate change.

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KW - tamil-nadu

KW - india

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