Certified Storm Water Operator Practice Exam

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What is the function of a detention basin?

To permanently store contaminated water

To convert stormwater into drinking water

To temporarily store stormwater and release it slowly to reduce flooding

The function of a detention basin primarily focuses on temporarily storing stormwater. It is designed to hold excess water from rainfall or storm events to mimic natural drainage patterns. By doing so, a detention basin reduces the immediate flow of runoff into nearby waterways, which helps to prevent flooding and erosion. After the stormwater is collected, it is gradually released into the drainage system or water body over time, allowing for controlled discharge. This process reduces peak flow rates and can significantly mitigate the risk of flooding downstream.

In the context of stormwater management, this strategy is crucial for protecting both infrastructure and the environment, as it allows for natural absorption and reduces the potential for water quality impairment due to rapid runoff.

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To allow for quick drainage of stormwater

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