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Open AccessArticle

The Projected Impact of a Neighborhood-Scaled Green-Infrastructure Retrofit

Department of Landscape Architecture and Urban Planning, Texas A&M University, College Station, TX 77843, USA
Author to whom correspondence should be addressed.
Sustainability 2018, 10(10), 3665;
Received: 12 September 2018 / Revised: 10 October 2018 / Accepted: 11 October 2018 / Published: 13 October 2018
(This article belongs to the Special Issue Urban Green Infrastructure and Climate Adaptation)
Climate change and its related factors are increasing the frequency of hurricanes, coastal storms, and urban flooding. Recovery from disasters can be slow, with jurisdictions failing to rebuild better, wasting time and money without improving resilience for the next disaster. To help attenuate floods and mitigate their impact, Low-Impact Development (LID) and the incorporation of green infrastructure (GI) is gaining in popularity. LID includes more natural methods of absorbing, redirecting, retaining, and filtering water through GI installations such as rain gardens, detention ponds, and the reduction of impervious surfaces. LID is, however, primarily implemented and evaluated only on a local scale; few studies have assessed the broader impact of GI on a larger scale. In fact, most performance calculators that evaluate the effects of GI are only useful at the site scale. Further, most GI advocates propose its use in new developments without much attention to retrofitting existing suburban development. This article seeks to determine what the potential effects of retrofitting an existing suburban neighborhood with GI for flood protection at a larger scale could be, using Sugar Land, Texas, United States as a case site. First, low-impact facilities are proposed and schematically designed at a site scale for a typical single-family lot. The volume of rainfall that can be retained on site, due to each incorporated feature, was then derived using the Green Values National Stormwater Management Calculator. Using these data, the total volume of rainfall that could be retained if all residential sites in Sugar Land incorporated similar facilities was then projected. The results show that Sugar Land has the capacity to annually capture 56 billion liters of stormwater if all residential properties use LID. Additional benefits of the use of GI include reduced heat (37%), improved aesthetics and property values (20%), increased recreational opportunities (18%), improved water quality (12%), improved air quality (5%), increased green collar jobs (4%), reduced damage from harmful gas emissions (3%), and increased energy savings (1%), thereby surpassing conventional stormwater management techniques. View Full-Text
Keywords: green infrastructure; low-impact development; resilience; stormwater management; landscape performance green infrastructure; low-impact development; resilience; stormwater management; landscape performance
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MDPI and ACS Style

Thiagarajan, M.; Newman, G.; Zandt, S.V. The Projected Impact of a Neighborhood-Scaled Green-Infrastructure Retrofit. Sustainability 2018, 10, 3665.

AMA Style

Thiagarajan M, Newman G, Zandt SV. The Projected Impact of a Neighborhood-Scaled Green-Infrastructure Retrofit. Sustainability. 2018; 10(10):3665.

Chicago/Turabian Style

Thiagarajan, Manasvini; Newman, Galen; Zandt, Shannon V. 2018. "The Projected Impact of a Neighborhood-Scaled Green-Infrastructure Retrofit" Sustainability 10, no. 10: 3665.

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