What is the purpose of temporary storage systems in stormwater design?

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Temporary storage systems in stormwater design primarily aim to manage the volume and rate of stormwater runoff to prevent flooding. These systems are designed to temporarily hold stormwater during and immediately after rainfall events, allowing for controlled release of water over time. By delaying the discharge of stormwater into drainage systems or natural waterways, these systems help alleviate the risk of overwhelming infrastructure during heavy rain events, thus minimizing the likelihood of flooding in urban areas.

While options related to collecting stormwater, storing water for reuse, or treating water pollutants may encompass other functions or aspects of stormwater management, the central purpose of temporary storage is specifically oriented towards flood prevention.