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Earth Observation Summer Irrigated Crop Areas

Created 09/03/2026

Updated 09/03/2026

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This dataset contains a satellite observed timeseries of the extent of irrigated summer crop areas in NSW from present day, back to 1987. Observations have been derived from medium-resolution multi-spectral satellite imagery (30m/pixel Landsat with a 16 day return interval and 10 m/pixel Sentinel-2 with a 5 day return interval). The presence of irrigated crops is derived from the application of the Normalised Difference Vegetation Index (NDVI), which quantifies vegetation density and health based upon the reflectance of red and near-infrared light in multispectral satellite imagery.
Expert opinion is then applied to qualify whether a field was irrigated, based on its greenness relative to the surrounding landscape throughout the summer season (December to April). The polygons are delineated in a semi-supervised manner and are accurate to the closest hectare.

It should be noted images captured in December may reflect signs of water application representative of irrigated areas, but on account of limited visible greenness from emerging crops may not be included.

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Additional Info

Field Value
Title Earth Observation Summer Irrigated Crop Areas
Language English
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/28547324-ea6a-416d-a428-ea03d8131f63
Remote Last Updated 06/03/2026
Contact Point
Spatial Services (DCS)
?datansw@customerservice.nsw.gov.au
Reference Period 06/03/2026
Geospatial Coverage New South Wales
Data Portal DataNSW

Data Source

This dataset was originally found on DataNSW "Earth Observation Summer Irrigated Crop Areas". Please visit the source to access the original metadata of the dataset:
https://data.nsw.gov.au/data/dataset/nsw-1-367a71babf92436c86a387ca643fc11a