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Related Flashcards
Cards In This Set
| Front | Back |
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Nature's renewable freshwater is mainly the consequence of..
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MELTING GLACIERS
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Accessible runoff is defined (according to Postel et al.) is...
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The proporiton of total runoff that is geographically and temporally available for human use.
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Nonreplenishable (fossil) groundwater (according to Postel et al) is...
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Water that, when tapped, does not replenish for thousands even millions of years.
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Which one of these four is NOT a category of "accessible runoff" water use?
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A) RECREATIONAL ACTIVITIES LIKE SAILING OR SURFING
b) Withdrawls or astractions for human activities c) Consumption that yields non-reusable water d) Human instream flow needs (fish spawning) |
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Which industry uses the most "accessible runoff" worldwide?
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AGRICULTURE
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About how much of the world's reservoirs is lost to evaporation per year?
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5%
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Desalination supplies about 14% of world water use.
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FALSE
1% |
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According to Postel et al. and their references, about how many large dams are being completed each year?
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500
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The Amazon River accounts for 15% of global runoff.
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TRUE
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The distribution of global runoff is highly uneven and corresponds poorly to the distribution of world population.
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TRUE
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The principle means of expanding Acessible Runoff is
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To capture and store more flood runoff
Possibly-- desalination |
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Overall, it is assumed that _____ of accessible runoff is now consumed directly for human purposes.
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18%
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Lake Whatcom has rapidly "aged" due to human activities; more specifically, during that last 6-10 years it has become biologically productive equal to a lake naturally aging over
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Several 1,000 years
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Treating the water before it gets to our taps in the city of Bellingham is now less expensive and challenging.
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FALSE
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E. Coli contamination has continued to close public beaches to be closed for swimming at Lake Whatcom.
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TRUE
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