GEOG 200 Lecture Notes - Lecture 7: Water Security, Food Security, Food Policy
7 Feb 2018
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Document Summary
Where: the amount of renewable water is very small, big body of water but if we drank it then it would be gone. Why is water important: drinking water, food (both agriculture and fisheries, hygiene/ sanitation, transportation (cost efficient and can transport lots of resources, more effective than highway, trains, air travel. Indirect vs. direct use of water: 6 gallons/ per flush of water, average: 2,000l per day per person, from a water resource perspective: better to drink beer than read a book. What are water withdrawals: total water withdrawals, refers to water that it takes from surface water (rivers, lakes) and groundwater sources. Main use water sectors: agriculture (70%, irrigation (evaporation, livestock, fisheries (aquaculture) Industry (20%: cooling (evaporation or warmer water is returned to the river, production (manufacturing, hydropower (water is not lost", mining, households (10%) [domestic use, outdoors watering your lawn (light irrigation, indoors, wastewater, others, recreation, navigation.
