HydroSHEDS is a mapping product that provides hydrographic
information for regional and global-scale applications in a consistent
format. It offers a suite of geo-referenced datasets (vector and
raster) at various scales, including river networks, watershed
boundaries, drainage directions, and flow accumulations. HydroSHEDS
is based on elevation data obtained in 2000 by NASA's Shuttle Radar
Topography Mission (SRTM).
This hydrologically conditioned elevation dataset is
the result of an iterative conditioning and correction process.
Note that the conditioning process alters the original DEM and
may render it incorrect for applications other than deriving drainage
directions. Endorheic basins (inland sinks) are ''seeded'' with
a no-data cell at their lowest point in order to terminate the
flow. Full details of the underlying digital elevation model are
available in the HydroSHEDS website and documentation.
This dataset is at 30 arc-second resolution. The datasets available
at 30 arc-seconds are the Hydrologically Conditioned DEM, Drainage
(Flow) Direction, and Flow Accumulation.
Note that the quality of the HydroSHEDS data is significantly lower for regions above
60 degrees northern latitude as there is no underlying SRTM elevation data available
and thus a coarser-resolution DEM was (HYDRO1k provided by USGS).
HydroSHEDS was developed by the World Wildlife Fund (WWF)
Conservation Science Program in partnership with the U.S. Geological
Survey, the International Centre for Tropical Agriculture, The
Nature Conservancy, and the Center for Environmental Systems Research
of the University of Kassel, Germany.
Bands
Pixel Size 927.67 meters
Bands
Name
Units
Min
Max
Pixel Size
Description
b1
m
-415*
8247*
meters
Elevation
* estimated min or max value
Terms of Use
Terms of Use
HydroSHEDS data are free for non-commercial and commercial
use. For more information, please refer to the License Agreement.
Citations
Citations:
Lehner, B., Verdin, K., Jarvis, A. (2008): New global hydrography
derived from spaceborne elevation data. Eos, Transactions, AGU,
89(10): 93-94.
HydroSHEDS is a mapping product that provides hydrographic information for regional and global-scale applications in a consistent format. It offers a suite of geo-referenced datasets (vector and raster) at various scales, including river networks, watershed boundaries, drainage directions, and flow accumulations. HydroSHEDS is based on elevation data obtained in 2000 …
[null,null,[],[[["\u003cp\u003eHydroSHEDS provides hydrographic information like river networks, watershed boundaries, and flow accumulations globally at various scales.\u003c/p\u003e\n"],["\u003cp\u003eIt's based on NASA's SRTM elevation data (from 2000) and has been hydrologically conditioned, making it suitable for drainage analysis.\u003c/p\u003e\n"],["\u003cp\u003eThe dataset is available at a 30 arc-second resolution (approximately 927 meters) and includes a hydrologically conditioned DEM.\u003c/p\u003e\n"],["\u003cp\u003eData quality is lower above 60 degrees northern latitude due to the reliance on coarser-resolution DEM in those areas.\u003c/p\u003e\n"],["\u003cp\u003eHydroSHEDS data is free for both non-commercial and commercial use under the specified license agreement.\u003c/p\u003e\n"]]],["The HydroSHEDS dataset, provided by WWF, offers hydrographic data, including river networks and watershed boundaries, from February 11-22, 2000. Derived from NASA's SRTM elevation data, the dataset is conditioned for drainage direction analysis, but is less reliable above 60 degrees north. It is accessible through Google Earth Engine using the snippet `ee.Image(\"WWF/HydroSHEDS/30CONDEM\")`. The hydrologically conditioned DEM (b1) has a 927.67-meter pixel size, with elevations ranging from -415 to 8247 meters. Data is free for both commercial and non-commercial use.\n"],null,["# WWF HydroSHEDS Hydrologically Conditioned DEM, 30 Arc-Seconds\n\nDataset Availability\n: 2000-02-11T00:00:00Z--2000-02-22T00:00:00Z\n\nDataset Provider\n:\n\n\n [WWF](https://www.hydrosheds.org/)\n\nTags\n:\n[conditioned](/earth-engine/datasets/tags/conditioned) [dem](/earth-engine/datasets/tags/dem) [elevation](/earth-engine/datasets/tags/elevation) [geophysical](/earth-engine/datasets/tags/geophysical) [hydrography](/earth-engine/datasets/tags/hydrography) [hydrology](/earth-engine/datasets/tags/hydrology) [hydrosheds](/earth-engine/datasets/tags/hydrosheds) [srtm](/earth-engine/datasets/tags/srtm) [surface-ground-water](/earth-engine/datasets/tags/surface-ground-water) [topography](/earth-engine/datasets/tags/topography) [water](/earth-engine/datasets/tags/water) [wwf](/earth-engine/datasets/tags/wwf) \n\n#### Description\n\nHydroSHEDS is a mapping product that provides hydrographic\ninformation for regional and global-scale applications in a consistent\nformat. It offers a suite of geo-referenced datasets (vector and\nraster) at various scales, including river networks, watershed\nboundaries, drainage directions, and flow accumulations. HydroSHEDS\nis based on elevation data obtained in 2000 by NASA's Shuttle Radar\nTopography Mission (SRTM).\n\nThis hydrologically conditioned elevation dataset is\nthe result of an iterative conditioning and correction process.\nNote that the conditioning process alters the original DEM and\nmay render it incorrect for applications other than deriving drainage\ndirections. Endorheic basins (inland sinks) are ''seeded'' with\na no-data cell at their lowest point in order to terminate the\nflow. Full details of the underlying digital elevation model are\navailable in the HydroSHEDS website and documentation.\n\nThis dataset is at 30 arc-second resolution. The datasets available\nat 30 arc-seconds are the Hydrologically Conditioned DEM, Drainage\n(Flow) Direction, and Flow Accumulation.\n\nNote that the quality of the HydroSHEDS data is significantly lower for regions above\n60 degrees northern latitude as there is no underlying SRTM elevation data available\nand thus a coarser-resolution DEM was (HYDRO1k provided by USGS).\n\nHydroSHEDS was developed by the World Wildlife Fund (WWF)\nConservation Science Program in partnership with the U.S. Geological\nSurvey, the International Centre for Tropical Agriculture, The\nNature Conservancy, and the Center for Environmental Systems Research\nof the University of Kassel, Germany.\n\n### Bands\n\n\n**Pixel Size**\n\n927.67 meters\n\n**Bands**\n\n| Name | Units | Min | Max | Pixel Size | Description |\n|------|-------|--------|--------|------------|-------------|\n| `b1` | m | -415\\* | 8247\\* | meters | Elevation |\n\n\\* estimated min or max value\n\n### Terms of Use\n\n**Terms of Use**\n\nHydroSHEDS data are free for non-commercial and commercial\nuse. For more information, please refer to the [License Agreement](https://www.hydrosheds.org/page/license).\n\n### Citations\n\nCitations:\n\n- Lehner, B., Verdin, K., Jarvis, A. (2008): New global hydrography\n derived from spaceborne elevation data. Eos, Transactions, AGU,\n 89(10): 93-94.\n\n### Explore with Earth Engine\n\n| **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\n### Code Editor (JavaScript)\n\n```javascript\nvar dataset = ee.Image('WWF/HydroSHEDS/30CONDEM');\nvar elevation = dataset.select('b1');\nvar elevationVis = {\n min: -50.0,\n max: 3000.0,\n gamma: 2.0,\n};\nMap.setCenter(-121.652, 38.022, 8);\nMap.addLayer(elevation, elevationVis, 'Elevation');\n```\n[Open in Code Editor](https://code.earthengine.google.com/?scriptPath=Examples:Datasets/WWF/WWF_HydroSHEDS_30CONDEM) \n[WWF HydroSHEDS Hydrologically Conditioned DEM, 30 Arc-Seconds](/earth-engine/datasets/catalog/WWF_HydroSHEDS_30CONDEM) \nHydroSHEDS is a mapping product that provides hydrographic information for regional and global-scale applications in a consistent format. It offers a suite of geo-referenced datasets (vector and raster) at various scales, including river networks, watershed boundaries, drainage directions, and flow accumulations. HydroSHEDS is based on elevation data obtained in 2000 ... \nWWF/HydroSHEDS/30CONDEM, conditioned,dem,elevation,geophysical,hydrography,hydrology,hydrosheds,srtm,surface-ground-water,topography,water,wwf \n2000-02-11T00:00:00Z/2000-02-22T00:00:00Z \n-67.3 -180 60 180 \nGoogle Earth Engine \nhttps://developers.google.com/earth-engine/datasets\n\n- [](https://doi.org/https://www.hydrosheds.org/)\n- [](https://doi.org/https://developers.google.com/earth-engine/datasets/catalog/WWF_HydroSHEDS_30CONDEM)"]]
