detention basin

• Bassin artificiel ou naturel conçu pour retenir temporairement les eaux de ruissellement ou de crue, puis les relâcher lentement afin de prévenir les inondations et de réguler le débit.

A man-made or natural area designed to temporarily store stormwater or floodwater, releasing it slowly to prevent flooding and control runoff.

1. Stormwater management structureC1formal

   A man-made or natural area designed to temporarily store stormwater runoff to prevent flooding and control water flow.

   bassin de rétention des eaux pluviales

   • The city built a detention basin near the river to reduce flood risk.
   • After heavy rain, the detention basin slowly releases water into the main channel.
   • Engineers designed the detention basin to hold excess runoff during storms.