Stormwater Management
Bioretention cells or rain gardens can attenuate stormwater peak runoff rates, infiltrate up to 90% of the annual rainfall, and greatly improves the quality of stormwater runoff. Ths factsheet describes how to properly develop a rain garden.
The Pennsylvania Stormwater Manual encourages the capture and reuse of stormwater runoff. A cistern is a storage tank located to collect runoff water from an impervious area, most likely a roof.
The Pennsylvania Stormwater manual recommends vegetated roofs (green roofs) as a stormwater low impact development (LID) practice. This fact sheet describes how green roofs can be constructed and how they can be expected to contribute to solving stormwater problems.
Infiltration is the process by which water ponded or flowing over the land surface moves into the soil. The Pennsylvania Stormwater Manual encourages the infiltration of stormwater runoff.
Across the country, public officials and others are focusing their pollution control efforts on stormwater management in both urban and rural areas. It is through stormwater that many pollutants, such as sediment, nutrients, bacteria, heavy metals, and others reach surface waters.
Over the past decade, much of the effort relating to stormwater management has focused on improving the quality of the runoff. Most common is the reduction of sediment.
During Construction. The skimmer is a sedimentation basin dewatering control device that withdraws water from near the basin’s water surface, thus removing the highest quality water from the basin for delivery to the uncontrolled environment.
During Construction. Sedimentation basins are impoundments placed on earth disturbance sites to capture and treat sediment-laden runoff.
