Simulation of Urban Wet Weather Best Management Practices at the Watershed Scale

Myers, Dwayne; Maimone, Mark; Smullen, James T.; Marengo, Brian G.

doi:10.14796/jwmm.r220-12

Cited by 3 publications

(2 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…HEC-HMS and HEC-RAS for steady state simulations, SWMM for dynamic simulations) are appropriate for a more detailed evaluation on a community or sub-watershed basis. More detailed modeling methods for representing development practices are described in Myers et al, 2004. To apply the methodology, a linear relationship between the runoff coefficient and imperviousness was defined according to Equation 6.2. For example, 0% imperviousness represents a runoff coefficient of 0.2 and 100% imperviousness represents a runoff coefficient of 0.8.…”

Section: Hydrologic and Hydraulic Methodsmentioning

confidence: 99%

Evaluation of Imperviousness Impacts in Large, Developing Watersheds

Gregory¹,

Aldrich

Holtshouse³

et al. 2006

JWMM

View full text Add to dashboard Cite

Land use changes and development practices that increase imperviousness can significantly alter and disrupt the natural and water resources within watersheds. Evaluating impacts of imperviousness in large watersheds can be a labor-intensive and time-consuming task and there is a need for simplified, planning-level methods that are easy to use and apply. There is also a need to educate and communicate results at the community level. This chapter presents methods for estimating the increase in impervious cover from development and for quantifying the resulting impact of various development practices on imperviousness in large watersheds. A case study in northeast Ohio demonstrates the approaches and methodologies.

show abstract

Section: Hydrologic and Hydraulic Methodsmentioning

confidence: 99%

Evaluation of Imperviousness Impacts in Large, Developing Watersheds

Gregory¹,

Aldrich

Holtshouse³

et al. 2006

JWMM

View full text Add to dashboard Cite

show abstract

“…In addition to improving water quality, they have also been proven to reduce the stormwater runoff volume and peak flows which enter the sewer system during intense rainfall. Studies have noted that in various urban areas, they have also been used as recreational amenities and wildlife habitats [52,53,59].…”

Section: Wetlandsmentioning

confidence: 99%

Impacts of Extreme Rainfalls on Sewer Overflows and WSUD-Based Mitigation Strategies: A Review

Muttil

Nasrin

Sharma

2023

Water

View full text Add to dashboard Cite

Extreme rainfall events cause an increase in the flow into aging sewer networks, which can lead to Sanitary Sewer Overflows (SSOs). This literature review presents a complete assessment of the application of Water Sensitive Urban Design (WSUD) approaches as mitigation strategies for reducing rainfall-induced SSOs. The review highlights the various WSUD techniques identified in past studies for reducing sewer overflows. In these studies, it was identified that permeable pavements, green roofs, raingardens/bio-retention cells and rainwater tanks were the most popular WSUD strategies that have been extensively used in the past for the mitigation of sewer overflows. WSUD or “green” approaches also have enormous environmental, social and economic benefits when compared to the conventional “gray” approaches for sewer overflow mitigation. However, there have been limited studies conducted in the past that highlight and quantify the benefits of WSUD approaches for sewer overflow mitigation, particularly when such strategies are applied at a large scale (e.g., city scale). This review has identified the modelling software, SWMM, to be the most widely applied tool that has been used in the literature for WSUD modelling. It was also identified that with climate change-induced extreme rainfall events on the increase, WSUD-based “green” strategies alone may not be enough for the mitigation of sewer overflows. A suitable sewer overflow mitigation strategy could be green or a hybrid green-gray strategy, which would need to be identified based on a detailed context specific analysis.

show abstract