Yes. The main body of subsurface water is found in the saturated zone of aquifers. Aquifers can be only a few feet below the surface or more than a thousand feet deep.
Lake Okeechobee, which means “big water” in the Seminole Native American language, is the largest lake in the southeastern United States and the second largest lake within the contiguous United States.
Stream stage is an important concept when analyzing how much water is moving in a stream at any given moment.
Probably you've seen this when driving on a road that has been cut through a hill. You are really seeing an exposed portion of water-bearing subsoil and bedrock.
Each reach is a continuous piece of surface water with similar hydrologic characteristics, such as a stretch of stream between two confluences or a lake.