What does a green fire hydrant signify regarding its flow rate?

A green fire hydrant signifies a flow rate of 1,000 to 1,499 gallons per minute (gpm). This color coding system is designed to provide firefighters with a quick visual reference to help assess the capability of a hydrant during emergency responses. When a hydrant is green, it indicates that this flow rate from the hydrant should be sufficient for most firefighting operations, allowing crews to effectively manage various fire situations.

The flow rates defined by color coding help in determining the best hydrants to use in different situations. For example, hydrants that indicate a lower flow rate, such as those painted in red or blue, may not provide the necessary water volume for certain firefighting tasks. Fire departments utilize these color codes to train their personnel and ensure safe and effective operations during emergencies.