What is the purpose of a retention pond in earthwork?

The purpose of a retention pond in earthwork is primarily to manage stormwater runoff effectively. Retention ponds play a key role in controlling the quantity and quality of water that flows into local waterways after rainfall or melting snow. They are designed to hold a specific volume of water, allowing it to be slowed down, treated, and released more gradually. This reduces the risk of flooding, minimizes erosion, and helps to filter pollutants from the water before it enters natural water bodies.

By capturing and retaining stormwater, these ponds help ensure that water management practices comply with environmental regulations and contribute to the overall health of the aquatic ecosystems. This function is essential for maintaining sustainable land development and protecting against the negative impacts of urbanization and climate change.