Groundwater Flooding

What is Groundwater Flooding?


Only a few places in Pierce County experience groundwater flooding. Soils in these areas allow water to easily migrate to the surface. A significant amount of rain in the fall can sometimes lead to groundwater flooding the following spring. Groundwater flooding is very slow to arrive and leave. People have time to move items to higher ground when groundwater flooding occurs.

Did You Know?


Pumping or diverting groundwater flooding does not work to reduce the amount of water on the surface. Groundwater is part of the water table that is normally underground. The water table holds a huge volume of water. Pumping only replaces groundwater, as fast as its removed, with more water.
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Recent Events
In early spring 2017, groundwater flooding occurred in the Graham, Frederickson and Spanaway communities following a very wet fall. The flooding lasted several weeks.
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