Data on surface water bodies like rivers, dams, reservoirs, and related  flow characteristics, along with assessments for water risks, stress, and flood risk. 

freshwater

Freshwater

Information on water features such as rivers, lakes, and reservoirs.

surface-water-bodies

Surface Water Bodies

Esri/WWF

This tile layer of the world's hydrological features was created by ESRI and is designed to provide a hydrologically oriented set of features to use with the World Terrain Base Layer or other simple base maps. The map features a hydrocentric design based on the amount of water flowing within the drainage network such that symbols of the same size and color represent roughly the same amount of water. Surface water flow is shown as a linear phenomenon even over and through bodies of water. Using the best available, these data show relative flow accurately, so that if one river carries more water downstream than another river, the result will be that the first river will have a thicker symbol on the map. This map is used as an overlay for content such as elevation from the World Terrain Base service or thematic services such as soil units, vegetation, or ecoregions. Combined with a basemap and map services, this map provides a frame of reference for showing regional, national, and continental hydrologic phenomena such as drought, runoff, river-level monitoring, and flood forecasting. River names are collected in the UTF8 character set so river names are collected in their original language but are written in the Roman alphabet. Sources for all river names are from the open source geonames.org project, so they are international by nature. The map is compiled from several sources. The global scales (very small scales through 1:2,300,000) include content from HydroSHEDS, GTOPO30 Global Topographic Data, SRTM, GLWD, WorldClim, GRDC, and WWF Global 200 Terrestrial Eco Regions, with the latter 3 providing the inputs and basis for calculating flow. At medium scales (1:36,000 to 1:2,000,000) this service currently contains only U.S. data from the NHDPlusV2 that was jointly produced by the U.S. Geological Survey (USGS) and the Environmental Protection Agency (EPA). Resource Watch shows only a subset of the data set. For access to the full data set and additional information, see the Learn More link.  
  
### Additional Information  
  
Resource Watch shows only a subset of the dataset. For access to the full dataset and additional information, click on the “Learn more” button.  
  
### Disclaimer  
  
Excerpts of this description page were taken from the source metadata.

Esri Hydro Reference Overlay

wat-030-world-hydro-reference-rw

water-peace-security

Water, Peace & Security

World Hydro Reference

Reference overlay highlighting water features for use with layers related to the natural sciences