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Precipitation moves down into the soil and becomes groundwater .Groundwater that travels into the saturated soil zone becomes part of The

User Brian Lacy
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-can be measured directly
-inject dye in one well and observe where dye appears in other wells
-determines velocity and direction of groundwater flow
-carbon - 14 can date groundwater at various wells
-determines how long since water entered groundwater system
User Brandon Slaght
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