On standard hazard maps, the hydrant is depicted by which symbol?

On standard hazard maps, the hydrant is depicted by which symbol?

• A. Solid circle
• B. Hollow circle
• C. Triangle
• D. Diamond

Answer: (A)

In hazard maps, symbols for critical infrastructure are chosen for quick, at-a-glance recognition. A hydrant needs to stand out clearly at various map scales and from a distance, so it’s shown as a solid circle. The solid fill provides strong contrast and unambiguous visibility, which helps responders locate water sources rapidly during a call. Hollow circles, triangles, or diamonds are used for different features or hazards, so they wouldn’t reliably indicate a hydrant. Therefore, the hydrant is depicted by a solid circle.

In hazard maps, symbols for critical infrastructure are chosen for quick, at-a-glance recognition. A hydrant needs to stand out clearly at various map scales and from a distance, so it’s shown as a solid circle. The solid fill provides strong contrast and unambiguous visibility, which helps responders locate water sources rapidly during a call. Hollow circles, triangles, or diamonds are used for different features or hazards, so they wouldn’t reliably indicate a hydrant. Therefore, the hydrant is depicted by a solid circle.