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Drawdown (Hydraulics) (Jbhvd)

Definition
The difference in elevation between the water surface elevation at a constriction in a stream or conduit and the elevation that would exist if the constriction were absent. (Source: AASHTO Glossary)
Broader Term
Water table (Jbhv)
Related Terms (Hierarchical)
Groundwater recharge (Jbhvr)