Tokyo

Sydney

Lima

Cairo

Seoul

DelhiDhaka

Lagos

Paris

Osaka

Manila

TehranLahore

Mumbai

Bogota

London

Moscow

Madras

Beijing

Bangkok

Karachi

Jakarta

Chicago

TianjinNew York Istanbul

Calcutta

Shanghai

Santiago

Kinshasa

Shenyang

Hyderabad

Sao Paulo

Hong Kong

Bangalore

Mexico City

Los Angeles

Buenos Aires

Rio de Janeiro

St. Petersburg

Groundwater Resources of the World

© BGR Hannover / UNESCO Paris 20080 1000 2000 3000 4000 5000 km

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Groundwater resources

in major groundwater basinsin areas withcomplex hydrogeological structurein areas with local and shallow aquifers

groundwater recharge (mm/a)very high high medium low very low

0220100300

180° 0° 30° 60° 90° 120° 150°30°60°90°120°150°

0°0°

30°30°

60°60°

30°30°

60°60°

Surface water & Geography

continuous ice sheet

large freshwater lakelarge saltwater lake

major river selected city!

country boundary