The Canterbury community of Hekeao / Hinds, located south of Ashburton, has advanced a nationally significant environmental initiative. Environment Canterbury's Long Term Plan 2021-2031 proposed a targeted community rating to fund the Hekeao / Hinds Managed Aquifer Recharge (MAR) project. Strong local support through public submissions resulted in confirmation of this funding mechanism.
The project represents New Zealand's largest managed groundwater rehabilitation project, delivering ecosystem health and enhanced environmental, cultural and recreational values.
How MAR Works
Managed Aquifer Recharge involves intentional aquifer recharging through infiltration basins that function as permeable ponds. Alpine water from the Rangitata River flows through irrigation infrastructure to MAR sites. Sediment settles in forebays before clean water seeps downward to replenish groundwater systems, providing natural water treatment benefits.
Project Results and Timeline
The fifth operational year concluded with a 66% increase in recharge volume compared to Year 4, along with measurable groundwater quality improvements and enhanced river flows. Government funding concludes mid-2022, transitioning leadership to the local community.
Environmental Compliance
Under Canterbury's Land and Water Regional Plan (Plan Change 2, 2018), the catchment must reduce nitrate leaching by 36% by 2035, with interim reductions by 2025.
Contact: Peter Lowe, Chair, Hekeao / Hinds Water Enhancement Trust, 0272233784