Regenwassermanagements

Regenwassermanagements, or stormwater management, is an integrated set of policies, designs, and practices intended to control rainfall runoff, protect water quality, reduce flood risks, and enhance water resources in both urban and rural settings.

Traditionally, management relied on rapid conveyance through drains; modern approaches aim to mimic natural hydrology by slowing and infiltrating runoff at its source and using captured water for reuse. Core goals include reducing peak discharge, minimizing pollutant loads, protecting aquatic ecosystems, and supporting climate resilience.

Key strategies fall into source-control measures, collection and conveyance systems, and treatment and reuse. Source-control includes green roofs, rain gardens, bioswales, and permeable pavements; collection and conveyance cover storm sewers and retention basins; treatment and reuse encompass detention/retention ponds, constructed wetlands, infiltration trenches, rainwater harvesting, and water reuse strategies.

Implementation requires collaboration among planners, engineers, property owners, and authorities; performance is measured by runoff volume reduction, peak discharge, and pollutant loads; maintenance is essential.

Global practice: in many regions, regulations guide stormwater management through design standards and permitting; funding models include public projects and private green infrastructure investments.

See also: green infrastructure, low impact development, water-sensitive urban design.