Two flood mitigation projects in Queensland will bring economic benefits at least five times more than their cost, a new analysis produced in conjunction with Suncorp
The analysis, Economic benefits of flood mitigation investments
by services firm Urbis, shows that for capital and running costs of $5.9m, St George’s flood mitigation project will deliver protective benefits totalling $31.6m over the next 50 years for a benefit cost ratio of 5.4. Roma’s project cost is $16.4m, delivering protective benefits totalling $81.1m over the next 50 years for a benefit cost ratio of 4.9.
Suncorp Personal Insurance executive general manager Lisa Harrison said the analysis excluded other benefits that are hard to quantify such as prevention of death and injury, emotional trauma and lost heritage value.
She said the report complemented the findings of the Productivity Commission’s recent draft report, which recommended significant increases in Federal Government funding on natural disaster mitigation.
“Councils can’t do it all themselves,” Harrison said. “Local government must be given more support to protect their communities. They need the funding to make it worthwhile and many councils struggle to access the expertise to plan the solutions that work best for them.
“The commission also calls for more targeted studies to identify critical areas of potential investment and this report helps fill the gap in the knowledge base.”
“We know effective flood mitigation protects vulnerable communities, safeguards property, builds stronger economies and, ultimately, reduces the cost of insurance,” Harrison said.
“And as these new figures show, if properly done in the right place it’s one of the smartest investments governments can make.”
Harrison said analysis also showed a 2.2 benefit cost ratio for Grafton’s much older levee infrastructure which has been protecting the town from flood since the 1970’s.
“Our experience in disaster-prone communities tells us that it’s much better to invest once rather than pay many times over," Harrison said.
"Over time, mitigation pays for itself, even old levees with lower risk protection as shown in Grafton.
“Many communities in Queensland and Australia-wide could be better protected and pay lower premiums – with the right funding and government policies."