According to the NFPA 291 standard, what does a fire hydrant color-coded red indicate?

A fire hydrant that is color-coded red indicates that it has a flow capacity of less than 500 gallons per minute (gpm). This classification is important for firefighters when assessing the available water supply at the scene of a fire. Hydrants that flow at this level are typically deemed inadequate for fighting larger fires, thus informing firefighters about potential limitations in their water supply during emergency operations.

This color-coding system, as established by NFPA 291, helps ensure that first responders can quickly identify the adequacy of water sources in their area, facilitating better planning and strategy in firefighting efforts. A red hydrant signals caution and prompts operators to consider alternative water sources or additional measures if necessary to effectively combat a fire.