Stream restoration design using sediment transport modeling and risk assessment

Sue L. Niezgoda, Peggy Ann Johnson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

To achieve a successful stream restoration, it is helpful to understand the relationships between channel form and processes, the effect of infrastructure and hard points on channel processes, current and future stream channel conditions, and the uncertainty involved with project design and implementation. Field investigations and long-term alluvial channel modeling were used on a relocation design case study reach to evaluate the effect of rigid in-stream structures on channel processes and verify the current and future stream channel stability. Results were used to identify instances where rigid in-stream structures have a significant impact on channel form and adjustment. Though the use of stability verification methods, changes to initial design characteristics that would have resulted in a more stable, sustainable project are also presented. The use of sediment transport stability verification design alternatives, can involve considerable upfront time and effort; however, application can result in modifications that reduce project uncertainty, and risk. A risk based design approach using Design Failure Modes and Effects Analysis and risk quantification is an efficient means to include uncertainty and decision-making in design. The estimates of risk for several design alternatives for a case study reach are compared to provide justification for selecting a cost effective restoration design. Copyright ASCE 2005.

Original languageEnglish (US)
Title of host publicationWorld Water Congress 2005
Subtitle of host publicationImpacts of Global Climate Change - Proceedings of the 2005 World Water and Environmental Resources Congress
Number of pages1
DOIs
StatePublished - Dec 1 2005
Event2005 World Water and Environmental Resources Congress - Anchorage, AK, United States
Duration: May 15 2005May 19 2005

Other

Other2005 World Water and Environmental Resources Congress
CountryUnited States
CityAnchorage, AK
Period5/15/055/19/05

All Science Journal Classification (ASJC) codes

  • Water Science and Technology

Fingerprint Dive into the research topics of 'Stream restoration design using sediment transport modeling and risk assessment'. Together they form a unique fingerprint.

Cite this