These Landsat Collection 2 Tier 1 Level 2 composites are made from Tier 1 Level 2 orthorectified scenes.
The Normalized Difference Water Index (NDWI) is sensitive
to changes in liquid water content of vegetation canopies. It is
derived from the Near-IR band and a second IR band, ≈1.24μm when
available and the nearest available IR band otherwise. It ranges in
value from -1.0 to 1.0. See
Gao (1996)
for details.
These composites are created from
all the scenes in
each 32-day period beginning from the first day of the year and
continuing to the 352nd day of the year. The last composite of the
year, beginning on day 353, will overlap the first composite of the
following year by 20 days. All the images from each 32-day period are
included in the composite, with the most recent pixel as the composite value.
Notes:
Only daytime images with WRS_ROW < 122 are included.
For Landsat 7 , images after 2017-01-01 are excluded due to orbital drift.
For Landsat 8, images before 2013-05-01 are excluded due to pointing issues.
Bands
Bands
Name
Pixel Size
Description
NDWI
30 meters
Normalized Difference Water Index
Terms of Use
Terms of Use
Landsat datasets are federally created data
and therefore reside in the public domain and may be used, transferred, or reproduced without copyright restriction.
Acknowledgement or credit of the USGS as data source should be provided
by including a line of text citation such as the example shown below.
(Product, Image, Photograph, or Dataset Name) courtesy of
the U.S. Geological Survey
Example: Landsat-7 image courtesy of the U.S. Geological Survey
These Landsat Collection 2 Tier 1 Level 2 composites are made from Tier 1 Level 2 orthorectified scenes. The Normalized Difference Water Index (NDWI) is sensitive to changes in liquid water content of vegetation canopies. It is derived from the Near-IR band and a second IR band, ≈1.24μm when available …
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],[],[[["\u003cp\u003eThis dataset provides 32-day composites of Landsat Collection 2 Tier 1 Level 2 data, spanning from 1984-01-01T00:00:00Z to 2025-02-02T00:00:00Z, sourced from Google Earth Engine.\u003c/p\u003e\n"],["\u003cp\u003eThe primary focus of the dataset is the Normalized Difference Water Index (NDWI), calculated using near-infrared bands to measure liquid water content in vegetation canopies, with values ranging from -1.0 to 1.0.\u003c/p\u003e\n"],["\u003cp\u003eComposites are created from all scenes within each 32-day period, with the most recent pixel value represented, and only daytime images with WRS_ROW < 122 are included in the data.\u003c/p\u003e\n"],["\u003cp\u003eThe Landsat data is in the public domain, allowing for unrestricted use and reproduction, however, proper credit to the U.S. Geological Survey (USGS) as the data source is required.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is accessible through Google Earth Engine for research, education, and nonprofit use, along with a code snippet provided for direct implementation and is available for use on the platform.\u003c/p\u003e\n"]]],["The Landsat Collection 2 Tier 1 Level 2 composites, available from 1984-01-01 to 2025-02-02 and provided by Google, are generated using orthorectified scenes. These composites, updated every 32 days, include the Normalized Difference Water Index (NDWI), calculated from near-infrared bands. Data includes only daytime images and excludes specific dates for Landsat 7 and 8 due to technical issues. The data is in the public domain and can be accessed via Earth Engine using a provided code snippet.\n"],null,["Dataset Availability\n: 1984-01-01T00:00:00Z--2025-07-12T00:00:00Z\n\nDataset Provider\n:\n\n\n [Google](https://earthengine.google.com)\n\nCadence\n: 32 Days\n\nTags\n:\n landsat \n ndwi \n usgs \nvegetation-indices \n\nDescription \nThese Landsat Collection 2 Tier 1 Level 2 composites are made from Tier 1 Level 2 orthorectified scenes.\n\nThe Normalized Difference Water Index (NDWI) is sensitive\nto changes in liquid water content of vegetation canopies. It is\nderived from the Near-IR band and a second IR band, ≈1.24μm when\navailable and the nearest available IR band otherwise. It ranges in\nvalue from -1.0 to 1.0. See\n[Gao (1996)](https://www.sciencedirect.com/science/article/pii/S0034425796000673)\nfor details.\n\nThese composites are created from\nall the scenes in\neach 32-day period beginning from the first day of the year and\ncontinuing to the 352nd day of the year. The last composite of the\nyear, beginning on day 353, will overlap the first composite of the\nfollowing year by 20 days. All the images from each 32-day period are\nincluded in the composite, with the most recent pixel as the composite value.\n\nNotes:\n\n- Only daytime images with WRS_ROW \\\u003c 122 are included.\n\n- For Landsat 7 , images after 2017-01-01 are excluded due to orbital drift.\n\n- For Landsat 8, images before 2013-05-01 are excluded due to pointing issues.\n\nBands\n\n**Bands**\n\n| Name | Pixel Size | Description |\n|--------|------------|-----------------------------------|\n| `NDWI` | | Normalized Difference Water Index |\n\nTerms of Use\n\n**Terms of Use**\n\nLandsat datasets are federally created data\nand therefore reside in the public domain and may be used, transferred, or reproduced without copyright restriction.\n\nAcknowledgement or credit of the USGS as data source should be provided\nby including a line of text citation such as the example shown below.\n\n(Product, Image, Photograph, or Dataset Name) courtesy of\nthe U.S. Geological Survey\n\nExample: Landsat-7 image courtesy of the U.S. Geological Survey\n\nSee the\n[USGS Visual Identity System Guidance](https://www.usgs.gov/information-policies-and-instructions/usgs-visual-identity-system)\nfor further details on proper citation and acknowledgement of USGS products.\n\nExplore with Earth Engine **Important:** Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please [register for Earth Engine access.](https://console.cloud.google.com/earth-engine)\n\nCode Editor (JavaScript) \n\n```javascript\nvar dataset = ee.ImageCollection('LANDSAT/COMPOSITES/C02/T1_L2_32DAY_NDWI')\n .filterDate('2017-01-01', '2017-12-31');\nvar colorized = dataset.select('NDWI');\nvar colorizedVis = {\n min: 0.0,\n max: 1.0,\n palette: ['0000ff', '00ffff', 'ffff00', 'ff0000', 'ffffff'],\n};\nMap.setCenter(6.746, 46.529, 6);\nMap.addLayer(colorized, colorizedVis, 'Colorized');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/LANDSAT/LANDSAT_COMPOSITES_C02_T1_L2_32DAY_NDWI) \n[Landsat Collection 2 Tier 1 Level 2 32-Day NDWI Composite](/earth-engine/datasets/catalog/LANDSAT_COMPOSITES_C02_T1_L2_32DAY_NDWI) \nThese Landsat Collection 2 Tier 1 Level 2 composites are made from Tier 1 Level 2 orthorectified scenes. The Normalized Difference Water Index (NDWI) is sensitive to changes in liquid water content of vegetation canopies. It is derived from the Near-IR band and a second IR band, ≈1.24μm when available ... \nLANDSAT/COMPOSITES/C02/T1_L2_32DAY_NDWI, landsat,ndwi,usgs,vegetation-indices \n1984-01-01T00:00:00Z/2025-07-12T00:00:00Z \n-90 -180 90 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://earthengine.google.com)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/LANDSAT_COMPOSITES_C02_T1_L2_32DAY_NDWI)"]]
