A new 113m-long flood wall is expected to increase the level of flood protection for several properties near the Whangārei CBD.
The Woods Rd flood wall is part of a wider flood mitigation programme the Northland Regional Council is rolling out under its Long-term Plan 2018-28 and will help protect flood-prone land along Raumanga Stream.
Regional council natural hazards manager Joseph Camuso said contractors Barfoote Construction built the flood wall in about 10 weeks at a cost of $360,000.
"Now it's finished, we've effectively given Commerce St one-in-50-year flood protection, a big improvement on the previous one-in-10-year protection," he said.
"This is the first place in the city that the Raumanga Stream overflows during a flood."