Final answer:
A fire stream that flows 40 to 350 gpm (160 L/min to 1 400 L/min) is categorized as a Handline stream, which firefighters manage using hose lines manually for different fire control applications.
Step-by-step explanation:
The size of fire stream that flows 40 to 350 gpm (160 L/min to 1 400 L/min) is known as a Handline stream. This range is typical for fire streams that are managed manually by firefighters using hose lines. These streams are versatile and can be used for various fire control tasks including direct fire attack and exposure protection. Handline streams are smaller than master streams, which are designed for higher flow rates and are typically supported by mechanical devices or mounted on fire trucks.