What is the boundary between groundwater and the soil above called?

The boundary between groundwater and the soil above is known as the water table. This term specifically refers to the level beneath which the soil and rock are saturated with water. Above the water table, the soil or rock may contain some moisture, but it isn’t fully saturated. The water table can fluctuate due to various factors such as rainfall, drought, and human activities like groundwater extraction. It serves as an important reference point in hydrology, as it separates the unsaturated zone (above) from the saturated zone (below). Understanding the water table is crucial for water management, environmental studies, and land-use planning, especially in rural areas where groundwater serves as a primary source of water.