What is the common flow rate of master streams used in firefighting operations?

The common flow rate of master streams used in firefighting operations is typically around 400 gallons per minute (GPM). Master streams are designed for significant firefighting efforts where larger amounts of water are needed to suppress fires effectively, especially in larger incidents or challenging conditions. At this flow rate, fire departments can deliver a powerful and sustained flow of water to combat fires in commercial or industrial structures, or to manage large wildfires, ensuring that sufficient force is applied to extinguish the flames and cool the surrounding area. This flow rate provides a balance between effective firefighting capabilities and the necessary amount of water supply typically available from fire hydrants or pump systems, making it a standard for many firefighting situations.