Much of Dargaville could be engulfed in a wide Kaihu River delta and the Ngunguru River mouth could open wide and swallow much of the estuary.
Low-lying land at Doubtless Bay, Ahipara, Bream Bay, Omapere and several other coastal sites could also be knee deep in the briny.
These are worst-case, 100-years-ahead scenarios revealed in draft maps identifying Northland's coastal erosion and flood-prone areas.
![Many properties in Ngunguru have been put on the coastal hazard map.](https://www.nzherald.co.nz/resizer/v2/7K7J5F4QNZHAFQBJ5CALK23JZI.jpg?auth=9e464601923eb8e68ef04083cf91df1f7e14090758894c3294b548fb5bea8840&width=16&height=15&quality=70&smart=true)
Northland Regional Council's (NRC) new maps pinpoint sites which may eventually be at risk from tide action, climate change and sea level rise; putting 13,000 Northland properties into a coastal hazard zone, on paper at least. They are at 31 erosion areas and 61 flood hazard sites now identified on both of Northland's coasts.