You can't build big enough drain systems to deal with flooding on this scale. It might be a start to limit the amount of emissions being spewed into the atmosphere creating the energy to cause these floods in the first place - #aucklandflooding

"A recent investigation into the world’s largest carbon standard found that 94% of its rainforest offset credits did not actually contribute to carbon reduction." There is a great scam being played out here and they're risking the biosphere for profit.

Women’s access to, & control of land is restricted by lack of implementation of existing laws, by harmful customary, traditional &social practices, norms &power structures within communities & households, & by lack of legal security systems to protect women against land grabbing