UC Berkeley GeoData Repository

Start Over Year 2009 Publisher U.S. Geological Survey Bounding Box -180 -89.81531 180 89.456192

1. North America: Void-filled digital elevation model, 15s resolution, 2009

2009. World Wildlife Fund (WWF). This raster layer is a void-filled digital elevation model (DEM) of North America at 15 arc-seconds resolution. Elevation is expressed in meters an... U.S. Geological Survey.

2. North America: Drainage Directions, 15s resolution, 2009

2009. World Wildlife Fund (WWF). This drainage direction map for North America defines the direction of flow from each cell in the conditioned digital elevation model to its steepe... U.S. Geological Survey.

3. North America: Drainage Directions, 30s resolution, 2009

2009. World Wildlife Fund (WWF). This drainage direction map for North America defines the direction of flow from each cell in the conditioned digital elevation model to its steepe... U.S. Geological Survey.

4. North America: Flow Accumulation, 15s resolution, 2009

2009. World Wildlife Fund (WWF). HydroSHEDS (Hydrological data and maps based on SHuttle Elevation Derivatives at multiple Scales)flow accumulation maps define amount of upstream a... U.S. Geological Survey.

5. North America: Flow Accumulation, 30s resolution, 2009

2009. World Wildlife Fund (WWF). HydroSHEDS (Hydrological data and maps based on SHuttle Elevation Derivatives at multiple Scales)flow accumulation maps define amount of upstream a... U.S. Geological Survey.