Is there groundwater below lakes

There can be groundwater below lakes but it depends on whether that ground water a supply for the lake or it takes away the water in lake, and the amount that can keep the water in the lake.It also depends on the type of lakes that lake is decides the importance of groundwater.Lakes interact with groundwater in three ways: it can have groundwater in-flow that gives it water, or it can have seepage loss to groundwater, and most lakes have both.