Water Distribution Manager (WDM) Greenbook 2 Practice Exam

In the hydrant color/flow coding scheme, which option represents a hydrant with 1500 gpm?

Light blue hydrant with 1500 gpm Green hydrant with 1000-1499 gpm Orange hydrant with 500-999 gpm Red hydrant with less than 500 gpm

Correct Answer:

Light blue hydrant with 1500 gpm

Explanation:

In hydrant color/flow coding, colors quickly indicate how much water a hydrant can provide. The common scheme maps: red for under 500 gpm, orange for 500–999 gpm, green for 1000–1499 gpm, and light blue for 1500 gpm or more. Therefore, a light blue hydrant with 1500 gpm sits in the highest flow category, making it the correct choice. The other colors correspond to lower flow ranges (green, orange, red), not 1500 gpm.

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