Table 1.13: Stormwater Management Practices
| Purpose |
Method |
Reason |
| Peak flow rate attenuation |
Storm monitoring
Detention/channel storage
Gravel surfaces
Rooftop/ parking lot storage
Disconnected impervious areas |
Flood prediction
Flood routing
Retardation
Flood routing and lag
Infiltration & attenuation |
| Runoff volume reduction |
Retention storage
Diversion
Soakaways
Basin recharge
Infiltration
French drains
Swales
Porous pavements
Contour ploughing |
Removal of flow
Subtraction of flow
Infiltration
Increase in groundwater
Flow reduction
Seepage
Flow retardation,
Infiltration
Infiltration |
| Provision for flooding |
Insurance
Flood zone building control regulation
Flood warning |
Compensation
Limitation of damage
Evacuation or diversion |
| Catastrophe aversion |
Evacuation
Sandbagging
Emergency overflows
Weir strengthening
Water tanks |
Structural failure
High water levels
Water flow control
Dangerous flood levels
Polluted water supplies |
| Erosion control |
Berms
Vegetation
Rockfill
Mulching
Fertilizing
Settling basins
Sediment removal
Screen
Centrifuge
Contour ploughing |
Settling
Stabilization, retardation
Flow control
Runoff control
Stimulation of vegetation
Catchment sediment
Basin renewal
Detritus
Separation
Surface storage |
| Pollution control |
Street sweeping
Street vacuuming
Street flushing
Catching first flush
Refuse removal
Storage
Aeration
Chemicals
Comminuters
Floatation
Legislation
Summons or fines
Waste dump isolation
Grass street verges
Fertilization methods
Land disposal |
Catching solids
Catching fines
Total removal
Most concentrated
Avoidance of pollution
Settling
Biochemical oxidation
Neutralization, precipitation
Grinding large solids
Scum, emulsion, oil
Enforcement of standards
Disincentive
Runoff detention
Catching fines, scums
Minimization of washoff
Removal of recoveries. |
