Soil air trapped in the ground can slow down the movement of water through soil. This happens because the air pressure in the soil affects how fast water can soak in. When soil air is stuck, water infiltration decreases by about 16% after 120 minutes. The difference in water content between wet and dry areas is around 1.5% when infiltration reaches a steady state. The stable pressure of soil air can change how quickly moisture spreads in the soil, affecting the overall water movement.