Water Resources
Hydrologic Cycle
Water available to drink for humans = 1%
,Aquifer – a permeable subsurface rock layer that can store, transmit, & supply water
Characteristics of an aquifer:
- porosity - storage
- permeability – transmits
, Human water use
US Trends in Population and Freshwater Withdrawals by Source
In general more water use over time and in the US we have become more conservative so it has
decreased a little
human activity that uses most water is AGRICULTURE
Hydrologic Cycle
Water available to drink for humans = 1%
,Aquifer – a permeable subsurface rock layer that can store, transmit, & supply water
Characteristics of an aquifer:
- porosity - storage
- permeability – transmits
, Human water use
US Trends in Population and Freshwater Withdrawals by Source
In general more water use over time and in the US we have become more conservative so it has
decreased a little
human activity that uses most water is AGRICULTURE
