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835 acres 76% impervious Combined and separately sewered areas - - PowerPoint PPT Presentation
835 acres 76% impervious Combined and separately sewered areas - - PowerPoint PPT Presentation
835 acres 76% impervious Combined and separately sewered areas Two outfalls Downtown Stormwater Modeling Project, March 2017, CDM Smith Downtown Stormwater Modeling Project, March 2017, CDM Smith Route 34 and Union Ave 8.8-8.9 feet
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835 acres 76% impervious Combined and separately sewered areas Two outfalls
Downtown Stormwater Modeling Project, March 2017, CDM Smith
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Downtown Stormwater Modeling Project, March 2017, CDM Smith
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Higher High Tide about 4.4 feet (NAVD88) Brewery St Ext 5.45 feet (NAVD88) Route 34 and Union Ave 8.8-8.9 feet (NAVD88)
Downtown Stormwater Modeling Project, March 2017, CDM Smith
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Downtown Stormwater Modeling Project, March 2017, CDM Smith
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- 5-year, 1 hour storm (1.5 inches)
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Date Duration (hrs) Max 5 min volume (in) Max 30 min volume (in) Total volume (in) 4/6/2017 2.25 0.12 0.48 0.64
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2010 – Cardinal 2014 – PB 2016 – CDM Smith
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2010: Large Infrastructure Solution ($54-59 M 2012 dollars including pump station)
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2014: Diversion to West River ($25 M 2013 dollars)
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2016: Pump Station to Harbor ($37 M 2019 dollars- Phase 1)
Downtown Stormwater Modeling Project, March 2017, CDM Smith
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Downtown Stormwater Modeling Project, March 2017, CDM Smith
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Preliminary results of research by Gaboury Benoit, Yale F&ES
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