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OSM Water Layer Surface Waters in OpenStreetMap

OSM Water Layers is a global surface water data, generated by extracting surface water features from OpenStreetMap. The OSM water layer rasterized map is referenced to WGS84. The data is prepared as 5 degree x 5 degree tiles (6000 pixel x 6000 pixel). Filename represents the center of the lower left pixel of the data domain; e.g. the file "n30w120.tif" is for the domain N30-N35, W120-W115. (more accurately, N29.99958333-N34.99958333,W120.0004167-W115.0004167)

Scale: 90m

Raster Values

  • 1: Ocean
  • 2: Large Lake/River
  • 3: Major River
  • 4: Canal
  • 5: Small Stream


Yamazaki, Dai, Daiki Ikeshima, Jeison Sosa, Paul D. Bates, George H. Allen, and Tamlin M. Pavelsky. "MERIT Hydro: a high‐resolution global hydrography map based on latest topography dataset." Water Resources Research 55, no. 6 (2019): 5053-5073.

License: Creative Commons Attribution 4.0 International (CC BY 4.0)


Earth Engine Snippet

var mainlands = ee.ImageCollection("projects/sat-io/open-datasets/OSM_waterLayer");

Sample Code:

Extra Info: Go to the OSM Water Layer webpage

Curated by: Samapriya Roy and Erin Trochim

Keywords: Global water layer, Open Street Map, OSM

Last updated: 2020-04-28