NSW Flood Response Aerial Imagery from March 2021

Rapid response aerial imagery captured by Spatial Services to support emergency management during and after the March 2021 floods in New South Wales, Australia. The dataset includes orthorectified mosaics in both Standard Colour (RGB) and False Colour (NRG) formats, with ground sample distances ranging from 10cm to 36cm for specific areas like Forbes and Condobolin. It was published on 18/11/2021 and serves as a visible record of the landscape for comparative analysis over time.

Use Cases

• Assessing flood extent and damage based on high-resolution aerial mosaics mentioned in the description.
• Conducting comparative landscape analysis over multiple dates using the imagery as a temporal record.
• Supporting emergency management decision-making with visible terrain and feature identification.
• Analyzing land cover changes in flood-affected areas using the False Colour (NRG) orthorectified files.

Strengths

• Imagery has high spatial resolution, with ground sample distances as fine as 10cm for the Nanami West area.
• Data is provided in two spectral formats: Standard Colour (RGB) and False Colour (NRG) orthorectified mosaics.
• Capture dates for specific locations are documented, such as 16 November for Forbes East.
• The dataset is part of the NSW Foundational Spatial Data Framework (FSDF), suggesting an established data standard.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• The data currency date is listed as 01/01/3000, which is likely a placeholder and obscures actual freshness.
• The description metadata is limited; actual data quality and completeness require manual inspection via the API.

Provenance

Source

Spatial Services, a business unit of the Department of Customer Service NSW.

Collection Method

Imagery was created by ortho-rectifying and mosaicing data from flight lines captured using a Leica-Geosystems ADS80 airborne digital sensor.

Time Range

Captured in November and December 2021, covering the March 2021 flood event.

Freshness

Last updated 2026-05-18 06:14:08.152753; freshness should be verified.

Geography

Areas in New South Wales, Australia, affected by recent flooding, including Humbug Creek, Lake Cowal, Mirrool Creek, Condobolin, Forbes, and Nanami.