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Avoca Lagoon Floodplain Management Plan

Created 05/06/2025

Updated 05/06/2025

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Seven flooding precincts have been identified around the lagoon foreshore. These have been sub-divided into four management areas. These management areas have been classified for flood hazard as: High Hazard - Floodways - Avoca Lagoon beach berm; - Saltwater Creek, from the upstream study boundary to its confluence with Avoca Lagoon (identified as Saltwater Creek floodway); and High Hazard – Low Hazard Floodway (Floodway Investigation area) - Avoca Lagoon at its entrance to the ocean (Floodway/Investigation area); Low Hazard - Flood Storage - Avoca Lagoon and foreshores excepting high hazard areas above. These management areas are illustrated on Figure 2, while Figure 3 provides more detailed information for the Avoca Lagoon entrance area and Figure 4 tables the specific provisions applicable to each of the management areas. Council has adopted a policy of opening the lagoons when water level reaches RL 2.09 m AHD (identified as the let-out-level). Council has, in the past, also adopted a policy that requires new buildings to have floor levels above RL 3.7 m AHD. These two policies effectively constitute Council's current floodplain management practice around Avoca Lagoon. Specific components of the Floodplain Management Plan are outlined in the report

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Additional Info

Field Value
Title Avoca Lagoon Floodplain Management Plan
Language English
Licence lsba
Landing Page https://devweb.dga.links.com.au/data/dataset/050cdece-0e74-4b96-b322-5771b33c6acf
Remote Last Updated 25/03/2024
Contact Point
Central Coast Council
ask@centralcoast.nsw.gov.au
Reference Period 02/02/2022 - 01/05/2008
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    147.0179,
    -32.1618
  ],
  "type": "Point"
}
Data Portal DataNSW

Data Source

This dataset was originally found on DataNSW "Avoca Lagoon Floodplain Management Plan". Please visit the source to access the original metadata of the dataset:
https://data.nsw.gov.au/data/dataset/nsw-fdp-avoca-lagoon-floodplain-management-plan-report