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| The City of Bowling Green, Ohio | |||||||||||||||||||||||||||||||||||||
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Bid Tabs | |
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Inspections | |
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Maps | |
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Specifications | |
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Standard Drawings | |
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Storm Design | |
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Surveying | |
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304 North Church Street Phone: (419) 354-6227 Email: bgpw@bgohio.org |
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Engineering Division (Home Page) |
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Storm Design
Storm Sewer - Storm Intensity / Duration Chart.
Storm sewers shall be designed to carry a 5 year storm event.
The Hydraulic Grade Line shall be checked for a 10 year storm event to ensure the HGL does not exceed the elevations of the catch basin or manhole rims.
Storm sewers shall not be flooded or hold water during dry conditions.
Storm Detention - Example storm detention calculation.
New development sites will provide storm detention for a 25 year storm event for a calculated weighted runoff coefficient.
The allowable discharge rate is a 2 year storm event at 20 minutes with a storm intensity of 2.31 in/hr. The site runoff coefficient for the allowable discharge is 0.10 for the predeveloped agricultural rate.
Water Quality Volume
Provide Water Quality Volumes for the site as required by the Ohio EPA and the Notice of Intent Permit. Water Quality Volumes are not required to be stacked or added to Storm Detention Volumes above.
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