Slow-moving water that flows into the river channel. The vertical flow of water between soil and rock layers. Water that seeps laterally through soil below the surface but above the water table. Common when there is slow or steady rainfall. Water held in rocks (also known as aquifer). It is water captured by plants, buildings and hard surfaces.Īny water in surface water such as lakes, ponds and puddles. Temporary storage of water before reaching soil. Main hydrological processes in a drainage basin Surface runoff can flow over impermeable and saturated surfaces until it eventually reaches river channels and becomes streamflow. The percolation of surface water through the rocks underneath to become groundwater, stored in aquifers. Running off the surface as overland flow, also known as surface runoff.Īny pathway taken by the water can be delayed by: Reaching the land surface and then infiltrating the topsoil. When precipitation occurs, the water can follow three pathways: Hydrological processes in a drainage basin
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