Flood protection and drainage bylaw
Environment Canterbury manages 59 river control and drainage schemes from Kaikōura to Waitaki, protecting a total asset value of $691 million.
The purpose of the flood protection and drainage bylaw is to manage, regulate and protect these assets, or those under our control, from inappropriate modification, damage or destruction.
It is also vital we keep up maintenance across our flooding and erosion control and drainage schemes to prevent damage or danger to nearby communities and keep people and properties safe.
The bylaw ensures all this happens.
If you are planning work in a scheme area that we manage, you may require written authority before carrying out certain activities.
Obtaining authority under the bylaw is free of charge; however, we need you to apply using this online form so we can ensure the activity doesn’t affect the integrity or effective operation of our schemes.
You can also download a hardcopy version of the form and associated guidance notes using the buttons at the bottom of this page.
Scheme areas and property maps
You can search for your property on Canterbury Maps to see if you are in a scheme area, or you can look on the individual maps below. The maps have been grouped into three Schedules, covering Flood Protection Schemes, Drainage Networks, or Floodways.
Open the Main Stopbanks flood protection Index Map and click on the map number that you would like to view, or view each map individually (Maps 1-72).
Open the Drainage Networks Index Map below and click on the map number that you would like to view, or view each map individually (Maps 73-85).
Open the Floodway Area Index Map below and click on the map number that you would like to view, or you can view each map individually (Maps 86-92)
Infrastructure protected by the bylaw includes, but is not limited to:
- drains and small watercourses
- defences against water including stopbanks, rock protection and groynes
- floodgates and culverts
- flood protection vegetation
- hydrological devices and equipment
- survey benchmarks.
The types of activities that are likely to require prior written authority include, but are not limited to:
- widening deepening and infilling any drain or small watercourse
- altering, damaging or otherwise interfering with any drain or small watercourse, defences against water, flood protection vegetation, hydrological equipment and survey benchmarks
- placing any material or structure in, on or near a drain or small water course or defence against water
- connecting any pipe, channel or other flow conduit to a drain or small watercourse
- allowing stock to damage drains or small watercourses, defences against water and flood protection vegetation
- growing, damaging or removing flood protection vegetation.