This map shows the amount of freshwater available per person in the year 2007. Orange and yellow regions depict water scarcity, while blue regions denote relative water abundance.

fishing quota

Matt McGrath

Scientists say the notoriously dry continent of Africa is sitting on a vast reservoir of groundwater.

They argue that the total volume of water in aquifers underground is 100 times the amount found on the surface.

JOANNA M. FOSTER

USGS Multiple Depth Well Locations 2011

Map of completed and planned multiple-depth well sites in the San Diego Hydrogeology project.

Map of reservoirs in San Diego

This map shows how water gets to San Diego from various sources near San Diego, and how electricity is involved in that process. Around the map via a chart, text, and graphs there is an explanation in more detail how water gets to San Diego, and how electricity and water are related through comparing information such as usage and conservation.

Service area for the Metropolitan Water District

Map of water management throughout San Diego County

USGS Multiple- depth well locations in San Diego