Ground water
water that flows through naturally porous or fractured rocks and soils beneath the surface of the land; also, water trapped between dikes (vertical, underground sheets of volcanic rock) or floating on seawater within rocks (C3, R1)
water that flows through naturally porous or fractured rocks and soils beneath the surface of the land; also, water trapped between dikes (vertical, underground sheets of volcanic rock) or floating on seawater within rocks (C3, R1)