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21. Australasia: River Network, 30s resolution, 2008

2008. World Wildlife Fund. This river network (stream lines) map for Australasia is derived from the flow direction map for Australasia. The flow accumulation map for Austral... Geological Survey (U.S.).

22. Europe: Drainage Directions, 15s resolution, 2008

2008. World Wildlife Fund (WWF). This drainage direction map for Europe defines the direction of flow from each cell in the conditioned digital elevation model to its steepest down... U.S. Geological Survey.

23. Europe: Drainage Directions, 30s resolution, 2008

2008. World Wildlife Fund (WWF). This drainage direction map for Europe defines the direction of flow from each cell in the conditioned digital elevation model to its steepest down... U.S. Geological Survey.

24. Europe: Flow Accumulation, 15s resolution, 2008

2008. 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.

25. Europe: Flow Accumulation, 30s resolution, 2008

2008. 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.

26. Europe: River Network, 15s resolution, 2008

2008. World Wildlife Fund. This river network (stream lines) map for Europe is derived from the flow direction map for Europe. The flow accumulation map for Europe is used fo... Geological Survey (U.S.).

27. Europe: River Network, 30s resolution, 2008

2008. World Wildlife Fund. This river network (stream lines) map for Europe is derived from the flow direction map for Europe. The flow accumulation map for Europe is used fo... Geological Survey (U.S.).

28. Groundwater Elevation Change, California, Spring 2008 to Spring 2013

2008. California. Department of Water Resources. This point shapefile represents changes in groundwater levels in California. These data represent groundwater changes between spring 2008 and sprin... California. Department of Water Resources.

29. Groundwater Elevation Change Color Ramp, California, Spring 2008 to Spring 2013

2008. California. Department of Water Resources. This raster dataset (GeoTIFF) represents groundwater elevation in California using a color ramp. These data represent groundwater changes between s... California. Department of Water Resources.

30. Groundwater Elevation Change Contours, California, Spring 2008 to Spring 2013

2008. California. Department of Water Resources. This line shapefile represents changes in groundwater levels in California. These data represent groundwater changes between spring 2008 and spring... California. Department of Water Resources.