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4.14 Blue-Green Roofs page

Download summaries of this SMP and its maintenance guidance, with quick reference information for clients and developers: 4.14.1 Blue‑green roof introduction Blue‑green roofs are a hybrid system consisting of a green roof (moisture-interception layer/geotextile, drainage layer, engineered growing medium, and vegetation above the roofing system and its waterproofing membrane) and a blue roof, a portion of […]

content...release, and evapotranspiration of precipitation Enhance building aesthetics and market value Help regulate building temperature...

content...stormwater before it can either be used by plants through evapotranspiration or be released downstream...

'Invisible Flying Rivers': How Trees Help Manage Stormwater: It’s a pretty abstract concept, but Antonio Nobre, one of Brazil’s leading climate scientists, described the impact of e blog post

It’s a pretty abstract concept, but Antonio Nobre, one of Brazil’s leading climate scientists, described the impact of evapotranspiration in a very cool way while talking to NPR’s Lourdes Garcia-Navarro in early November:

content...one NPR source describes as “massive, invisible flying rivers.” Image Credit: Philadelphia Water Evapotranspiration. A...

content...the air. Antonio Nobre, one of Brazils leading climate scientists, described the impact of evapotranspiration...

content...also allow plants to soak it up. This is where evapotranspiration comes into play. The...

4.7 Ponds and Wet Basins page

Download summaries of this SMP and its maintenance guidance, with quick reference information for clients and developers: 4.7.1 Pond and wet basin introduction Ponds and wet basins are earthen depressions constructed with a substantial permanent water pool to provide both temporary and long-term storage of stormwater runoff, and they can be used to attenuate peak flows […]

content...physical, chemical, and biological processes. Wet basins can also achieve minimal volume reduction through evapotranspiration....

content...it can either evaporate, be used by plants through evapotranspiration, or be released downstream at...

content...through evapotranspiration, improves aesthetics, provides wildlife habitat, and helps to stabilize soil. Vegetation in and...

4.3 Green Roofs page

Download summaries of this SMP and its maintenance guidance, with quick reference information for clients and developers: 4.3.1 Green roof introduction Green roofs, also referred to as vegetated roofs, eco-roofs, and roof gardens, consist of a layer of vegetation that covers an otherwise conventional flat or moderately pitched roof. A green roof is composed of multiple […]

content...effectiveness can be improved by introducing measures to enhance evapotranspiration. Typical expedient measures include: Introducing...

content...temporarily hold stormwater before it can either be used by plants through evapotranspiration or be...

A. Glossary page

Applicant: A property owner, developer, or other person or entity who has submitted an application to the Philadelphia Water Department (PWD) for approval to engage in, or be exempt from, any Regulated Activity at a Development Site in the City of Philadelphia. Combined Sewer Overflows (CSO): A combined sewer overflow is an intermittent overflow or […]

content...requirements are described in Chapter 2 of this Manual. Evaporation and transpiration (evapotranspiration): Evaporation is the...

content...exterior surfaces. The sum of evaporation and transpiration are commonly referred to as evapotranspiration. Existing...

4.1 Bioinfiltration/Bioretention page

Download summaries of this SMP and its maintenance guidance, with quick reference information for clients and developers: 4.1.1 Bioinfiltration/bioretention introduction Bioinfiltration and bioretention stormwater management practices (SMPs), often referred to as rain gardens, are vegetated depressions or basins that use surface storage, vegetation, planting soil, outlet controls, and other components to treat, detain, and retain stormwater […]

3.2 Stormwater Management Design page

Section 3.2 contains a significant amount of design guidance that the designer should use to integrate robust and cost-effective stormwater management into site designs in ways that achieve the Philadelphia Water Department’s (PWD’s) key stormwater management goals of minimizing the harmful effects of flooding and maintaining the health of Philadelphia’s streams and rivers. Additionally, this section […]

content...EvapotranspirationThe SMPs ability to manage stormwater runoff via evapotranspiration (ET). Each SMP is evaluated based...

Stormwater Planters page

A stormwater planter is a specialized sidewalk system that captures runoff from streets and sidewalks. The planter is lined with permeable fabric, filled with gravel or stone, and topped off with vegetation.

content...by providing storage, infiltration, and evapotranspiration of runoff. Excess runoff is directed into an overflow...

Rain Gardens page

A rain garden is vegetation designed to collect runoff from impervious surfaces, allowing water to infiltrate the ground. Rain garden plants are generally robust native species that can thrive in extremely wet and dry weather.

content...After the water ponds on the surface, its used by the vegetation in evapotranspiration and...

B. Abbreviations page

content...propylene diene terpolymer ERSA Existing Resources and Site Analysis ET Evapotranspiration FLL German Landscape Research,...