The Floodway Overlay (FO) identifies land in in both rural and urban areas that, during a flood event, would allow the passage of flood waters or the store flood waters.
The Land Subject to Inundation Overlay (LSIO) have a lower flood risk than FO areas.
The FO and LSIO require a Planning Permit for certain developments and the subdivision of land.
You should seek advice from the Water Catchment Management Authority (Wimmera CMA) before you apply for a Planning Permit if these overlays partly or fully impact your property.