The LID approach protects the natural ability of the site to capture precipitation, keep it clean, and allow it to recharge the local water table. This is achieved by applying a suite of tools including:
- Planning: preserve the site's natural features such as wetlands, native vegetation, flood plains, woodlands and soils to the greatest extent possible;
- Landscaping: plant native vegetation in buffer strips and in rain gardens (small planted depressions that can trap and filter runoff);
- Prevention: use vegetated areas to slow down runoff; maximizing infiltration and reducing contact with paved surfaces;
- Innovating: reduce impervious surfaces wherever possible through alternative street design, such as omission of curbs and use of narrower streets, and through use of shared parking areas.