Morris, M. and Courivaud, J. (2025) Conclusions from the performance assessment of industry applicable internal erosion initiated breach prediction models. In: Protections 2025 (5th International Seminar on Dam Protections Against Overtopping), 29 April - 1 May 2025, Stillwater, USA.
Full text not available from this repository.Abstract
The EDF funded Performance Assessment of Industry Applicable IE Initiated Breach Prediction Models project was initiated with a workshop at HERU in Stillwater in October 2019. In the following 4 years a team of modelers comprising both model developers and industry model users analyzed the performance of 6 different breach modelling codes against a range of different data sets, including hypothetical, field and real dam failure case studies. Each of the data sets reflected a dam or levee failure initiated by internal erosion, and which subsequently developed into an open breach. Modelers were required to simulate breach formation from the initial ‘pipe’ flow through to open breach and the associated dam or levee failure. Four phases of modelling work were undertaken, with the initial Phase 0 focusing on hypothetical data to test the team approach. Phase 1 focused on assessing performance against sets of field data, whilst Phase 2 focused on assessing performance against observed Lawn Lake and Big Bay dam failure data. The final Phase 4 work took a different approach by focusing on data uncertainty (both case study and modelling data uncertainty) to see how the observed and predicted conditions potentially overlapped. This final stage of work allowed us to determine whether a model might recreate the observed conditions given the correct combination of modelling parameters. This paper presents a brief overview of the project, followed by a summary of findings from each of the model assessment phases, along with the overall project conclusions.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Uncontrolled Keywords: | Dam and Levee breach, breach modelling, internal erosion initiated breach |
| Subjects: | Floods > Dams and reservoirs |
| Divisions: | Floods |
| Depositing User: | Helen Stevenson |
| Date Deposited: | 29 Oct 2025 13:35 |
| Last Modified: | 29 Oct 2025 13:35 |
| URI: | http://eprints.hrwallingford.com/id/eprint/1705 |
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