A stream discharging more than 350 gpm is known as which type of stream?

A stream that discharges more than 350 gallons per minute (gpm) is classified as a master stream. This type of stream is typically used for large-scale firefighting operations and is capable of delivering a significant volume of water to effectively combat intense fires.

Master streams are often deployed using fixed monitors or aerial devices, allowing for a broader reach and the ability to cover larger areas or extinguish fires in challenging situations. Their high flow rate is particularly essential in dealing with large structures, hazardous materials, or when the fire is rapidly spreading, thus requiring a greater amount of water to be applied quickly and efficiently.

In contrast, handline streams refer to smaller lines that firefighters can operate manually, usually discharging less than 350 gpm. Primary streams and deluge streams are also related but do not necessarily fit the specific criteria of a flow rate exceeding 350 gpm as defined for master streams. A clear understanding of these classifications helps firefighters determine the appropriate equipment and tactics for various firefighting scenarios.