Hyfran Plus Jun 2026

The story began with a fundamental problem in civil engineering: how do you build a bridge or a dam if you don't know how big the "100-year flood" will be? Engineers needed a way to fit statistical distributions to historical water-flow data to estimate the probability of rare, catastrophic events. The Development of Hyfran Initially, the software was known simply as

Even experienced crews make these errors with Hyfran Plus:

The sessions themselves were deceptively simple. The facilitator arrived early and arranged chairs in a rough circle. They set a bowl of water in the center — a symbol, some said, of reflection. They invited participants to leave their phones in a wooden box at the door and to choose a single question from a small set pinned to a board: What do you most want to say? When did you last change your mind about someone? If you could relive one hour, which would it be? People could also write their own. Each person would speak for up to three minutes, uninterrupted. After each speaker, two minutes of silence followed, then a community response — not advice, not interruption, but a single sentence of what the listener carried away. The ritual ended with a walk outside, in pairs, for five minutes, where people exchanged phone numbers only if they wanted to continue the work. hyfran plus

Researchers use Hyfran Plus to analyze historical maximum daily rainfall data, helping to update IDF curves and assess how climate change might affect the frequency and intensity of future extreme rainfall events. Integrating Hyfran Plus in Hydrological Modeling

Compare different statistical laws (such as Gumbel, Weibull, or Log-Pearson Type III) to see which best fit the local river data. The "Plus" Evolution The story began with a fundamental problem in

, primarily used to estimate the frequency and severity of extreme events like floods and heavy rainfall. Developed as an evolution of the original HYFRAN software, it integrates a powerful Decision Support System (DSS)

Hyfran Plus is the enabling technology for SCC: The facilitator arrived early and arranged chairs in

Hyfran Plus: A Comprehensive Guide to Statistical Hydrology Software

Hyfran-Plus specializes in analyzing data. In hydrology, this means each recorded event (such as annual peak river discharge) is treated as an isolated, random occurrence unaffected by previous events, originating from a stable climate system. Pre-Analysis Hypothesis Testing

The research team continues to develop the software, with ongoing work on sub-classes of distributions based on asymptotic behavior, discrimination tools, and the estimation of extreme events in stationary and non-stationary frameworks.