A wadi is a dry riverbed or valley that typically contains water only during periods of heavy rain. Found mainly in arid and semi-arid regions, wadis can be important for local ecosystems, providing a habitat for various plants and animals. They often serve as natural drainage channels, directing rainwater away from higher ground. During the rainy season, wadis can transform dramatically, flowing with water and creating temporary streams. This phenomenon can lead to flash floods, making them hazardous. In some cultures, wadis are also significant for agriculture, as they can support vegetation and crops in otherwise dry landscapes, contributing to local livelihoods.