Environment Canterbury manages the Halswell Drainage District and, following significant damage in the earthquake of September 2010, produced a comprehensive Earthquake Reinstatement Plan.

This has now been updated and investigates changes to the Halswell River following the 2010 and 2011 earthquakes. The plan, which was outlined at a community meeting in March, covers progress, works required and costs to reinstate the waterway capacity and bank stability of the Halswell River and the associated drainage network.

The reports can be found on the ECan website.