Philippe Crochet (10/04/14)

Benedikt Magnússon, April 7, 2014

Statistics Colloquium

Speaker: Philippe Crochet, Research Specialist at the Icelandic Meteorological Office
Title: Estimating the flood frequency distribution at ungauged catchments using a regional flood frequency analysis

Location: V-157, VRII
Time: Thursday, April 10th, 12:00-13:00.


Extreme events such as floods may have serious societal and environmental consequences. It is therefore necessary to develop adequate models for the estimation of such events. Often, this information is required at sites where measured streamflow series are either too short to allow a robust estimation of extreme flood quantiles, or where no data is available at all. We explore the possibility of conducting a regional flood frequency analysis (RFFA) to reliably predict flood quantiles at both gauged and ungauged sites. The principle of the method is to transfer information from gauged sites to a target site (gauged or ungauged) within a homogeneous region. The principle of the method is first presented and then tested in Northern Iceland, using available streamflow observations and then streamflow simulations from a distributed hydrological model.