Normal streams are streams that flow at a consistent rate and follow a predictable path. Although "normal stream" is a commonly used term, there are several synonyms that can be used to refer to this type of stream. These synonyms include perennial stream, steady stream, continuous stream, constant stream, and regulated stream. Perennial stream is often used to refer to streams that have a consistent flow rate throughout the year and are supported by a groundwater source. Steady stream refers to streams that flow consistently without interruption. Continuous stream denotes a stream that flows without significant variation in water level or flow rate. Constant stream refers to streams that have a stable flow rate in contrast to intermittent streams. Regulated stream refers to streams that are managed or manipulated to maintain a consistent flow rate.