Final answer:
The saturated thickness of the High Plains Aquifer refers to the vertical extent of the aquifer that is completely saturated with water. The data shows different ranges of saturated thickness, indicating the depth at which the aquifer is saturated with water.
Step-by-step explanation:
The saturated thickness of the High Plains Aquifer refers to the vertical extent of the aquifer that is completely saturated with water. In this case, the saturated thickness is measured in meters and feet. The provided data shows different ranges of saturated thickness, indicating the depth at which the aquifer is saturated with water.
For example, the range 0-15 meters/0-50 feet represents the saturated thickness from the surface to a depth of 15 meters/50 feet. Similarly, the range 30-61 meters/ 100-200 feet represents the saturated thickness from a depth of 30 meters/100 feet to 61 meters/200 feet.