Fire streams greater than 350 gpm are considered to be:

Fire streams greater than 350 gallons per minute (gpm) are classified as master streams. This classification is used in firefighting to denote large, powerful streams of water that are typically delivered through fixed or larger portable devices, such as aerial ladders or ground monitors. Master streams are capable of producing significant water flow and are crucial for combating large fires or fire conditions that cannot be controlled effectively with smaller hand lines, which generally deliver less than 350 gpm.

The distinction between master streams and other types of streams lies in their flow capacity and intended use. Master streams are designed to deliver substantial volumes of water quickly, addressing high-demand situations where intense heat and fire spread require immediate and extensive suppression efforts.

In contrast, hand lines are smaller hoses used for more manageable situations, and portable streams may refer to other tools used for delivering water but do not carry the same defined capacity. Surge streams is not a standard term recognized within the classification of fire streams. Understanding these classifications is essential for effective firefighting strategy and resource allocation during emergencies.