@article{Olubode-Awosola:160419,
      recid = {160419},
      author = {Olubode-Awosola, Femi and Paragahawewa, Upananda Herath  and Upsdell, Martin and Vattala, Don},
      title = {Economics of supply reliability of irrigation water},
      address = {2013-08},
      number = {1171-2016-93302},
      pages = {11},
      year = {2013},
      abstract = {In this study, we have assessed the economic impact of  potential increase in supply
reliability of irrigation  water in the Hinds Plains Area in the Ashburton district.  The
Hinds catchment has a number of irrigation schemes  namely, Rangitata Diversion
Race (provides water for  Mayfield Hinds and Valetta Schemes), Barrhill  Chertsey,
Eiffelton and Lynford Schemes. All these schemes  have varying supply reliability
which ranges from 40% to  80% approximately. First, we estimated the  relationship
between water availability and pasture growth  using experimental data. We then
employed this relationship  to estimate the potential incremental pasture growth  with
assumed increased supply reliability (95%) at farm  level. We estimated the farm level
benefit of increased  pasture production in terms of saved costs in supplementary  feed.
These farm level estimates were used to assess the  catchment level farm income gain.
The catchment level  income gain was then employed to assess the regional  level
economic gain (GDP and employment) by the  socio-accounting matrix input-output
model (SAMI-O)  simulation. Income gain at catchment level is estimated to  vary
from $16 to $17million. This implies an additional  gain in regional level income
(GDP) of $85 to $91million  and additional employment of 137 FTE to 207 FTE. The
study  indicates the importance of an increase in irrigation  efficiency at farm level for
the local and regional economy  and also discusses the potential environmental
impacts of  increase irrigation efficiency at catchment level.},
      url = {http://ageconsearch.umn.edu/record/160419},
      doi = {https://doi.org/10.22004/ag.econ.160419},
}