View source for Methods/PFHA Tools

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page_type: tool_or_platform
page_id: TOOL_PFHA
canonical_hazard_id: N/A
related_hazard_ids: EH-HYD, EH-HYD-RIV, EH-HYD-PLV
authoritative: true
revision_date: 2026-05-07
status: placeholder_v1.0
summary: Stochastic event-based modeling tools (SEFM and RORB_MC) used to perform probabilistic flood hazard assessments for riverine and pluvial flooding at nuclear power plant sites.
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'''PFHA Tools — Stochastic Event Flood Models (SEFM / RORB_MC)'''

The Stochastic Event Flood Model and the Stochastic Runoff Routing Monte Carlo model are stochastic event-based simulation platforms used to develop probabilistic flood hazard assessments for nuclear power plant sites. These tools move beyond the traditional Probable Maximum Flood paradigm by estimating the full probability distribution of flood levels, including the likelihood of exceeding the PMF, and explicitly characterizing aleatory variability and epistemic uncertainty.

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''Return to [[Methods and Tools]].'' | ''EPRI technical point of contact: Chris Rochon ([mailto:CRochon@epri.com CRochon@epri.com])''

''Date last reviewed: 2026-05-07''