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River Basin Management Part 1

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An examination of global fresh water resources and an introduction to river basin management.

An examination of global fresh water resources and an introduction to river basin management.

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  • Author's note: Water, water everywhere? Well not quite everywhere. Water is a finite resource. There are about 1360 billion cubic kilometres of water on our planet. You will need the notes on the download, I'm afraid, to hang on to the thread later on. (A box for notes from authors would be a good idea?)<br /><br/>
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    River Basin Management Part 1 River Basin Management Part 1 Presentation Transcript

    • RIVER BASIN MAN AGEMEN T Part 1 GLOBA L FRESH W A TER CRISIS? RESOU RCES W HAT CRISIS? AN EN VIRON MEN T A L IN T ERA CT ION
    • Water, water everywhere? But how much water have we got all together?
    • 97.5% of the water in our planet is in our oceans. Too salty for use by humans. The rest is fresh water though. All 37 million cubic kilometres of it! So, no problem then? Well…..
    • …most of it is locked up in icecaps and glaciers
    • The Hydrological Cycle A global model From MacLean and Thomson CORE HIGHER GEOGRAPHY
    • 725 mm per annum
    • RIVER REGIMES from River Basin Management Doherty & McDonald
    • RIVER REGIMES
    • An Alluvial Fan in the Karakorum
    • Total runoff? About 40,000 cubic kilometres
    • Total RELIABLE runoff? About 10,000 cubic kilometres
    • from River Basin Management (Doherty and McDonald)
    • DOMESTIC: 100 cubic kilometres n.b. we only need 10 to 30 litres for basic health standards Image: New Internationalist
    • INDUSTRIAL: 200 cubic kilometres
    • COOLING: 45 cubic kilometres
    • LIVESTOCK: 40 cubic kilometres
    • IRRIGATION: 3,300 cubic kilometres
    • MAJOR IRRIGATION SYSTEMS from G. Tyler Miller: Sustaining the Earth, (Thomson)
    • Major Irrigation Systems Gravity Flow Irrigation (Efficiency 60% to 80%)
    • Drip Irrigation (efficiency 90% - 95%)
    • Central Pivot Irrigation (efficiency 80% to 95%) 95
    • RESOURCES AND FURTHER READING Vital Water Graphics from UNEP at http://www.unep.org/dewa/assessments/ecosystems/water/vitalwater/freshwa World Water Vision from the World Water Council at http://www.worldwatercouncil.org/index.php?id=961 Sustaining the Earth, G.Tyler Miller,Jr., (2004), Thomson Learning Changemakers Library - Tools for Social Change - Water at http://proxied.changemakers.net/library/fieldlink.cfm-field=Water w w w .ge o juice .o rg