Atmospheric Water Vapor Solar E Precipitation 100% Evaporation 30 Water Table Hydrologic Cycle in a River basin
Hydrologic Cycle in a River Basin Hydrologic Cycle in a River Basin
2. Annual Precipitation Uneven distribution of rainfall throughout the world-10800 mm/yr at Cherrapunji, India 8690 mm/yr at Buena Vista, Columbia, but 30 mm/yr at Cairo, Egypt, 80 mm/yr at riyadh, Saudi arabia Uneven distribution of rainfall throughout China -1600-2200 mm/yr at Guangzhou and Hong Kong, but less than 80 mm/yr at Kashi Xinjiang
2. Annual Precipitation 2. Annual Precipitation ¾ Uneven distribution of rainfall throughout the world – 10800 mm/yr at Cherrapunji, India, 8690 mm/yr at Buena Vista, Columbia, but 30 mm/yr at Cairo, Egypt, 80 mm/yr at Riyadh, Saudi Arabia. ¾ Uneven distribution of rainfall throughout China – 1600-2200 mm/yr at Guangzhou and Hong Kong, but less than 80 mm/yr at Kashi, Xinjiang
Tibet At。cama australia LEGEND Semi-arid to Arid zone Scale Extreme arid zone World Arid Zones
World Arid Zones World Arid Zones
3. Quantity of Water Available and Global Water Crisis esh Water Groundwater Surface Wat accessible All Surface Fresh Water 2.8% Water Sources As a Percentage of Total Supply
3. Quantity of Water Available and 3. Quantity of Water Available and Global Water Crisis Global Water Crisis Water Sources As a Percentage of Total Supply Water Sources As a Percentage of Total Supply
Reasons for Water Shortage Low percentage of accessible water Unequal distribution of accessible water Rapidly rising demand with population Increase Pollution of water supplies close to urban areas
Reasons for Water Shortage Reasons for Water Shortage ¾ Low percentage of accessible water ¾ Unequal distribution of accessible water ¾ Rapidly rising demand with population increase ¾ Pollution of water supplies close to urban areas