Explore the fundamentals of groundwater in this 44-minute geology lecture. Delve into Earth's freshwater resources, groundwater usage, and soil moisture. Examine the distribution of groundwater and understand the concept of the water table. Learn about porosity and its impact on groundwater movement, as well as hydraulic gradients and artesian systems. Investigate city water systems and discuss related environmental problems. Gain valuable insights into this crucial component of Earth's hydrosphere and its significance in physical geology.