Interception is a crucial but often overlooked process in hydrology. It's the first thing that happens to raindrops when they hit the ground, and it affects all other water-related processes. Ignoring interception can mess up water models. Interception is when moisture evaporates back into the air after it rains, usually within a day. This evaporation happens on all wet surfaces like leaves, soil, and rocks. Depending on the climate, interception can be a big part of how water evaporates from the Earth. The way interception works changes over time, and there are formulas to figure out how much interception happens each day, month, or even shorter periods.