USGS EROS Archive - Landsat Collection 2 Level-3 Dynamic Surface Water Extent (DSWE) Science Product
Landsat Collection 2 Level-3 Dynamic Surface Water Extent (DSWE) contains six acquisition-based raster data products pertaining to the existence and condition of surface water.
Dataset Citation
Please cite this dataset in the following manner:
Earth Resources Observation and Science (EROS) Center. (2022). Landsat Level-3 Dynamic Surface Water Extent, Collection 2 [dataset]. U.S. Geological Survey. https://doi.org/10.5066/P9DPWBUS
The U.S. Geological Survey (USGS) offers Landsat Collection 2 Level- 3 Dynamic Surface Water Extent (DSWE) science products for Landsat 8-9 Operational Land Imager (OLI), Landsat 7 Enhanced Thematic Mapper Plus (ETM+), and Landsat 4-5 Thematic Mapper (TM). Landsat DSWE contains six acquisition-based raster data products pertaining to the existence and condition of surface water.
Landsat C2 DSWE science products are generated from Landsat Collection 2 U.S. Analysis Ready Data (ARD) Surface Reflectance data, and use the cloud, cloud shadow, and snow information provided in the “PIXELQA” band.
Landsat C2 DSWE science products are processed to 30-meter spatial resolution in Albers Equal Area (AEA) projection using the World Geodetic System 1984 (WGS84) datum, and gridded to a common tiling scheme.
The following date ranges apply to the availability of the Landsat DSWE science product:
- Landsat 8-9 OLI: April 2013 to Present
- Landsat 7 ETM+: July 1999 to present
- Landsat 5 TM: March 1984 to May 2012
- Landsat 4 TM: November 1982 to December 1992
Most Landsat Collection 2 Level-1 scenes can be processed to generate a DSWE product. In addition to the caveats listed on the Landsat C2 ARD and C2 Surface Reflectance web pages, please note the following:
- Overcorrection of aerosol path radiance over water in Landsat 8 Collection 2 Surface Reflectance near clouds or other bright targets may adversely impact the quality of DSWE science product. Initial analysis showed that the C2 Landsat 8 DSWE may erroneously classify a pixel as non-water as a result of overcorrected Surface Reflectance over water. For additional information please see the Landsat Collection 2 Known Issues webpage.
Please refer Surface Reflectance Quality Assessment (QA) bands for pixel-level condition and validity flags and when using the DSWE product.
Additional Information
- Landsat Missions Collection 2 DSWE webpage
- Landsat Collection 2 Level-3 Dynamic Surface Water Extent Data Format Control Book
- Landsat Collection 2 Level-3 Dynamic Surface Water Extent Algorithm Description Document
Access Data
Landsat Collection 2 DSWE products are available for download from EarthExplorer .
The data are located under the Landsat category, Landsat Collection 2 Level-3 Science Products subcategory, and listed as Landsat 4-9 C2 Dynamic Surface Water Extent.
Visit the Landsat Data Access webpage for information about downloading C2 DSWE products.
The Landsat Data Access summary table provides information about all Landsat Collection 2 data access options.
Data Citation History
The preferred citation for this dataset was revised in 2024 to improve accuracy and alignment with USGS Fundamental Science Practices. The dataset digital object identifier (DOI) and version did not change.
Please cite this dataset in the following manner:
Earth Resources Observation and Science (EROS) Center. (2022). Landsat Level-3 Dynamic Surface Water Extent, Collection 2 [dataset]. U.S. Geological Survey. https://doi.org/10.5066/P9DPWBUS
The previously used citation shown below is provided here for historical reference only:
Earth Resources Observation And Science (EROS) Center. (2022). Collection-2 Landsat Level-3 Dynamic Surface Water Extent (DSWE) Science Product [dataset]. U.S. Geological Survey. https://doi.org/10.5066/P9DPWBUS
Below are other science projects associated with this product.
USGS EROS Archive - Landsat Archives - Landsat Collection 2 U.S Analysis Ready Data (ARD) Product
Landsat Collection 2 Level-3 Dynamic Surface Water Extent (DSWE) contains six acquisition-based raster data products pertaining to the existence and condition of surface water.
Dataset Citation
Please cite this dataset in the following manner:
Earth Resources Observation and Science (EROS) Center. (2022). Landsat Level-3 Dynamic Surface Water Extent, Collection 2 [dataset]. U.S. Geological Survey. https://doi.org/10.5066/P9DPWBUS
The U.S. Geological Survey (USGS) offers Landsat Collection 2 Level- 3 Dynamic Surface Water Extent (DSWE) science products for Landsat 8-9 Operational Land Imager (OLI), Landsat 7 Enhanced Thematic Mapper Plus (ETM+), and Landsat 4-5 Thematic Mapper (TM). Landsat DSWE contains six acquisition-based raster data products pertaining to the existence and condition of surface water.
Landsat C2 DSWE science products are generated from Landsat Collection 2 U.S. Analysis Ready Data (ARD) Surface Reflectance data, and use the cloud, cloud shadow, and snow information provided in the “PIXELQA” band.
Landsat C2 DSWE science products are processed to 30-meter spatial resolution in Albers Equal Area (AEA) projection using the World Geodetic System 1984 (WGS84) datum, and gridded to a common tiling scheme.
The following date ranges apply to the availability of the Landsat DSWE science product:
- Landsat 8-9 OLI: April 2013 to Present
- Landsat 7 ETM+: July 1999 to present
- Landsat 5 TM: March 1984 to May 2012
- Landsat 4 TM: November 1982 to December 1992
Most Landsat Collection 2 Level-1 scenes can be processed to generate a DSWE product. In addition to the caveats listed on the Landsat C2 ARD and C2 Surface Reflectance web pages, please note the following:
- Overcorrection of aerosol path radiance over water in Landsat 8 Collection 2 Surface Reflectance near clouds or other bright targets may adversely impact the quality of DSWE science product. Initial analysis showed that the C2 Landsat 8 DSWE may erroneously classify a pixel as non-water as a result of overcorrected Surface Reflectance over water. For additional information please see the Landsat Collection 2 Known Issues webpage.
Please refer Surface Reflectance Quality Assessment (QA) bands for pixel-level condition and validity flags and when using the DSWE product.
Additional Information
- Landsat Missions Collection 2 DSWE webpage
- Landsat Collection 2 Level-3 Dynamic Surface Water Extent Data Format Control Book
- Landsat Collection 2 Level-3 Dynamic Surface Water Extent Algorithm Description Document
Access Data
Landsat Collection 2 DSWE products are available for download from EarthExplorer .
The data are located under the Landsat category, Landsat Collection 2 Level-3 Science Products subcategory, and listed as Landsat 4-9 C2 Dynamic Surface Water Extent.
Visit the Landsat Data Access webpage for information about downloading C2 DSWE products.
The Landsat Data Access summary table provides information about all Landsat Collection 2 data access options.
Data Citation History
The preferred citation for this dataset was revised in 2024 to improve accuracy and alignment with USGS Fundamental Science Practices. The dataset digital object identifier (DOI) and version did not change.
Please cite this dataset in the following manner:
Earth Resources Observation and Science (EROS) Center. (2022). Landsat Level-3 Dynamic Surface Water Extent, Collection 2 [dataset]. U.S. Geological Survey. https://doi.org/10.5066/P9DPWBUS
The previously used citation shown below is provided here for historical reference only:
Earth Resources Observation And Science (EROS) Center. (2022). Collection-2 Landsat Level-3 Dynamic Surface Water Extent (DSWE) Science Product [dataset]. U.S. Geological Survey. https://doi.org/10.5066/P9DPWBUS
Below are other science projects associated with this product.