DEA Water Observations Statistics 3.1.6 [deprecated]

AI-generated Key Takeaways

• This dataset, DEA Water Observations Statistics, uses Landsat satellite imagery to classify pixels as 'wet', 'dry', or 'invalid' to provide statistics on water presence.

• The statistics indicate how many times an area was clearly seen by satellites, how many times water was detected, and the percentage of time water was observed annually.

• This dataset is a publisher dataset managed by Geoscience Australia and was available from 1987 to 2022, but was removed on March 01, 2025.

Caution: This dataset was removed on March 01, 2025. Learn more.

info

This dataset is part of a Publisher Catalog, and not managed by Google Earth Engine. Contact Geoscience Australia for bugs or view more datasets from the Geoscience Australia Catalog. Learn more about Publisher datasets.

Catalog Owner

Geoscience Australia

Dataset Availability

1987-01-01T00:00:00Z–2022-01-01T00:00:00Z

Dataset Provider

Geoscience Australia NGIS

Contact

Geoscience Australia

Earth Engine Snippet

ee.ImageCollection("projects/geoscience-aus-cat/assets/ga_ls_wo_fq_cyear_3")

Tags

australia ga geoscience-aus-cat landsat-derived publisher-dataset water

Description

Digital Earth Australia (DEA) Water Observations uses an algorithm to classify each pixel from Landsat satellite imagery as 'wet', 'dry', or 'invalid'. Water Observations Statistics provides information on how many times each year the Landsat satellites were able to clearly see an area, how many times those observations were wet, and what that means for the percentage of time that water was observed in the landscape.

Combining the classified pixels into summaries covering each year gives the information on where water is usually, and where it is rarely. As no confidence filtering is applied to this product, it is affected by noise where misclassifications have occurred in the input water classifications, and can be difficult to interpret on its own.

For more information, please see the DEA Water Observations Statistics Landsat

This product is part of the Digital Earth Australia Program

Bands

Pixel Size
25 meters

Bands

Name	Units	Min	Max	Description
count_clear	count	-32768*	32767*	Clear count: how many times an area could be clearly seen.
count_wet	count	-32768*	32767*	Wet count: how many times water was detected in observations that were clear.
frequency	%	0	1	Water frequency: what percentage of clear observations were detected as wet.

* estimated min or max value

Terms of Use

Terms of Use

CC-BY-4.0

Citations

Citations:

• Mueller, N., Lewis, A., Roberts, D., Ring, S., Melrose, R., Sixsmith, J., Lymburner, L., McIntyre, A., Tan, P., Curnow, S., & Ip, A. (2016). Water observations from space: Mapping surface water from 25 years of Landsat imagery across Australia. Remote Sensing of Environment, 174, 341-352 doi:10.1016/j.rse.2015.11.003

DOIs

• https://doi.org/10.1016/j.rse.2015.11.003

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DEA Water Observations Statistics 3.1.6 [deprecated]

Digital Earth Australia (DEA) Water Observations uses an algorithm to classify each pixel from Landsat satellite imagery as 'wet', 'dry', or 'invalid'. Water Observations Statistics provides information on how many times each year the Landsat satellites were able to clearly see an area, how many times those observations were wet, …

projects/geoscience-aus-cat/assets/ga_ls_wo_fq_cyear_3, australia,ga,geoscience-aus-cat,landsat-derived,publisher-dataset,water

1987-01-01T00:00:00Z/2022-01-01T00:00:00Z

-44.41 108.81 -9.13 157.82

Google Earth Engine

https://developers.google.com/earth-engine/datasets

• https://doi.org/10.1016/j.rse.2015.11.003
• https://doi.org/10.1016/j.rse.2015.11.003
• https://doi.org/10.1016/j.rse.2015.11.003