Skip to main content


Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

Wastewater agencies traditionally use a design storm approach to predict how wet weather influences flows and to define the system capacity required for avoiding CSOs and SSOs. When using the design storm approach, it is essential to understand the relationship between rainfall and wastewater flows. There are two important concepts in developing this understanding. The first is the return frequency of a storm as opposed to the return frequency of a flow in a sewer collection system as a result of the storm. The return period or frequency of a storm event may have little or no correlation to the return period of the peak flow in the wastewater system. The second concept is the distinction between a meteorological storm event and a storm event as it relates to generating peak flows in a sewer. Understanding these concepts enables the successful selection of design storm parameters including storm duration, rainfall depth, and rainfall pattern, as illustrated by experiences in Bremerton and Everett, Washington. Recommendations for how to select a design storm include carefully reviewing historical storm events and flow responses to determine system responses, verifying historical rainfall depths with a frequency analysis, and selecting storm patterns that have a higher intensity of rainfall toward the end of the storm.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Document Type: Research Article

Publication date: 2006-01-01

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more