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Global Capture Fisheries and Aquaculture Production, 1950-1999
The global fisheries catch has leveled off, reflecting a growing decline in most major fishing areas. This graphic shows the amount of global aquaculture…
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Evolution of Water Supply and Wastewater Disposal
This graphic shows the changes in water supply and wastewater disposal that occur through four stages of growth of a settlement: early settlement; the…
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Freshwater Withdrawal by Sector in 2000
The agricultural sector is by far the biggest user of freshwater, primarily for irrigation of arable land. This graphic shows the relative percentages of…
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Freshwater Stress and Scarcity in Africa by 2025
According to Population Action International, based upon the UN medium population projections of 1998, more than 2.8 billion people in 48 countries will face…
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Global International Waters Assessment (GIWA) Case Studies
The Global International Waters Assessment (GIWA) is an example of a comprehensive strategic assessment designed to identify priorities for remedial and mitigatory actions in…
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Variations in River Runoff by Continent through most of the 20th Century
River runoff is cyclical in nature, with alternating cycles of wet and dry years. Significant deviations from average values differ in duration and magnitude.…
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Industrial and Domestic Consumption
Throughout the 20th century, global water use has increased in the agricultural, domestic and industrial sectors. Evaporation from reservoirs has increased at a slower…
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Global Freshwater Withdrawal
This graphic makes it possible to compare water use by the agricultural, industrial and domestic sectors at the national level. The graphic indicates which…
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Human Actions Leading to Coastal Degradation
Physical alteration and destruction of habitats are now considered one of the most important threats to coastal [and marine] areas. This graphic shows the…
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The DPSIR Framework
The DPSIR framework (Driving Forces-Pressures-State-Impacts-Responses) is used to assess and manage environmental problems. Driving forces are the socio-economic and socio-cultural forces driving human activities,…
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Water Supply and Sanitation Coverage
The graphic shows the amount of water supply versus sanitation coverage between the world and developing nations in percentage. It shows statistics from 1990…
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A World of Salt: Total Global Saltwater and Freshwater Estimates
Estimates of global water resources based on several different calculation methods have produced varied estimates. This graphic illustrates the proportions of saltwater and freshwater…