Hawkesbury Nepean River Map

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The bounds of the river are shown as they are in normal conditions.

The Hawkesbury Nepean Catchment

About this map

Map type

Vector

Satellite

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This KML/KMZ file is an aggregation of publicly available geospatial information from a variety of sources, including:

Major watercourses:
https://data.gov.au/dataset/surface-hydrology-polygons-national
Minor Tributaries:
http://www.bom.gov.au/water/geofabric/
Flood overlays:
Land and Property Management Authority
Hawkesbury City Council, 2011.
NSW Reconstruction Authority (2024)
https://data.nsw.gov.au/data/dataset/2024-hawkesbury-nepean-river-flood-study
Local Government Boundaries:
https://data.gov.au/dataset/nsw-local-government-areas

This selection, processing, transformation, visualisation and software implementation is original work by Nathan Zamprogno, licensed under Creative Commons Attribution 4.0 (CC-BY 4.0). Free use is encouraged, with attribution.

This project was created in 2018 as a Google Earth overlay and updated in early 2026 incorporating new data such as the 2024 Hawkesbury-Nepean River Flood Study.
It is hoped to also soon include flood modelling from the Environmental Impact Statement for the shelved Warragamba Dam Raising project (State Significant Infrastructure ID: SSI-8441).

Further analysis and updates will be available at
https://councillorzamprogno.info/a-map-of-the-hawkesbury-nepean-river-and-its-tributaries-and-catchment-boundary/

This data is not recommended for the assessment of flood risk.
Any errors (such as in conversion from other GIS formats or my hand-tracing of the extent of creeks) are mine.