Dataset
Central Coast Council
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Avoca Lagoon Floodplain Management Plan
NSW Flood Data Portal

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

Dataset Source Details

This dataset is connected from the NSW Flood Data Portal

Source dataset project Avoca Lagoon Floodplain Management Plan
Source dataset link Avoca Lagoon Floodplain Management Plan

Data and Resources

Metadata Summary What is metadata?

Field Value
Language English
Edition 27/06/2017
Purpose Land and Resource Management
Frequency of change As needed
Date of Asset Publication 2008-05-01
License 3rd party licence
Geospatial Topic Disaster
NSW Place Name Avoca
Extent

Dataset extent
River Basin 212 - Hawkesbury
Spatial Data Capture Method Exported from Model
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