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Casey brown hydrosystems research group revisieng

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Unformatted text preview: ystems Research Group How much water is there? •  Total freshwater resources = groundwater, surface water, polar caps and glaciers (10^3 km3) –  Groundwater = 23,400 –  Rivers = 45.5 (Flux) –  Glaciers and snow = 24,064 –  Lakes = 174 –  Soil Moisture = 17 –  Permafrost = 300 –  Wetlands = 17 Casey Brown - Hydrosystems Research Group How much water can we use? •  “Renewable and Accessible” •  Much of freshwater resources are not accessible –  Polar glaciers and permafrost –  ArEc rivers –  Much of Amazon flow •  Much groundwater nonrenewable (recharge rate = 0) •  Total renewable and accessible Runoff = 13,000 km3/yr Casey Brown - Hydrosystems Research Group Inaccessible Runoff Casey Brown - Hydrosystems Research Group Water use and consumpEon Casey Brown - Hydrosystems Research Group Casey Brown - Hydrosystems Research Group Casey Brown - Hydrosystems Research Group HOW MUCH SHOULD WE USE? Casey Brown - Hydrosystems Research Group How m...
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