MODIS Water Mask

Data Access
  • Download via FTP Server
  • Official archival copy of this product, called MOD44W, is available at the DAAC

GLCF editions of MODIS products differ from DAAC editions by coming in GeoTIFF format, geographic coordinates, WGS84 datum, and a tiling system designed to fit well with Landsat imagery.


The Global Raster Water Mask at 250 meter spatial resolution is a new product using the SWBD(SRTM Water Body Data) in combination with MODIS 250m data to create a complete global map of surface water at 250 m spatial resolution. This effort is intended to produce a dataset for use in processing of raster data (MODIS and future instruments) and for masking out water in final raster data products. Comments on this product are welcome.

Code Values
Values for the Water Mask layers
Value Label
0 Land
1 Water
255 Fill
How to Cite This Data Set

Citation Format: Author (Publication Date), Collection Name, Product Name {optional}, Version, Collection Publisher, Publisher Location, Product Coverage Date {optional}

Citation Parameters Example:

  • Author: Carroll, M., Townshend, J., DiMiceli, C., Noojipady, P., Sohlberg, R.
  • Publication Date: (2009)
  • Collection Name: MOD44W MODIS Water Mask
  • Product Name: Global Raster Water Mask at 250 meter Spatial Resolution
  • Version: Collection 5
  • Publisher: University of Maryland
  • Publisher Location: College Park, Maryland
  • Product Coverage Date: 2000-2002
Full Example Citation: Carroll, M.L., C.M. DiMiceli, R.A. Sohlberg, and J.R.G. Townshend (2004), 250m MODIS Normalized Difference Vegetation Index, 250ndvi28920033435, Collection 4, University of Maryland, College Park, Maryland, Day 289, 2003.

Full Example Citation: Carroll, M., Townshend, J., DiMiceli, C., Noojipady, P., Sohlberg, R. 2009. A New Global Raster Water Mask at 250 Meter Resolution. International Journal of Digital Earth. ( volume 2 number 4)

Intellectual Property Rights

University of Maryland, Department of Geography and NASA; use is free to all if acknowledgement is made. UMD holds ultimate copyright.


Source for this data set is the Global Land Cover Facility,

MODIS Watermask
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University of Maryland National Aeronautics and Space Administration GOFC_GOLD

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