Arroyo (creek)
An arroyo (/əˈrɔɪoʊ/; ), a Spanish word translated as brook, and also called a wash is usually a dry creek or stream bed—gulch that temporarily or seasonally fills and flows after sufficient rain. Wadi is a similar term in Africa. In Spain, a rambla has a similar meaning to arroyo. In Hispanic America any small river might be called arroyo, even if it flows continually all year and is never dry.
Read more about Arroyo (creek): Types and Processes