What does an isohyet or isohyetal line represent on a map?

An isohyet, or isohyetal line, represents locations on a map that receive the same amount of precipitation. This type of line is used in meteorology and hydrology to visualize and analyze rainfall distribution across different geographical areas. By connecting points of equal rainfall, isohyets help to illustrate patterns of precipitation over a region, which can be crucial for various applications such as agriculture, water resource management, and understanding local climates. While other options deal with different hydrological concepts, they do not pertain to the specific representation of precipitation amounts.