Detention Basins

A storage facility without permanent water, usually having a gravel base to ensure good drain down. Detention basins tend to be limited to larger developments, more than about 100 houses and for commercial/retail areas.

DEX Roundabout Detention Basin

- looking West

Detention Basin

A gently sloping, grassy detention basin built into the centre of a roundabout, with a shallow depression in the ground, a grated inlet and small drainage channel leading into it. Low shrubs and small trees grow on and around the grass banks, and a large industrial or warehouse‑style building is visible in the background beyond the road.

Detention Basin

A gently sloping, grassy detention basin with a shallow depression and low vegetation. The basin is surrounded by trimmed grass and low shrubs, in the distance are fields.

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