Stormwater and Flood Protection

Storm Water Drainage Systems

Council provides stormwater drainage systems in Ōtorohanga and Kāwhia for limiting the potential for surface flooding that may occur in these communities.

Both the stormwater drainage and flood protection systems are designed to be effective in providing protection against most rainfall and flooding events.

They may not, however, provide absolute protection against the most severe events that could possibly occur.

The stormwater drainage systems are provided for the disposal of rainwater and groundwater from the communities. It is not to be used for disposal of wastewater or any other contaminated effluent or toxic materials.

Stormwater connections

Stormwater connection fees can be found here.

To apply for a stormwater connection you will need to fill out an application.  For Ōtorohanga click here and for Kāwhia here.


The Regional Infrastructure Technical Specification (RITS) is a document that sets out how to design and construct transportation, water supply, wastewater, stormwater and landscaping infrastructure in the participating councils’ areas. For Regional Infrastructure Technical Specifications click here.

Flood Pump Stations

A system of stopbanks and flood pump stations are provided in Ōtorohanga (with the support of the Waikato Regional Council) to reduce the potential for the Waipa River flooding the community.

When the Waipa River is at a high level, it is not possible for stormwater to flow out of Ōtorohanga by gravity, as it normally does.

In these circumstances, the flood pump stations at Mair Street, Huiputea Drive and Otewa Road are used to 'push' the stormwater out into the river.

For the pumps to operate, the water levels inside the adjacent ponding areas must first rise. Residents should not be concerned about these higher water levels.