https://www.floodhydrostats.com/home daily 1.0 2017-06-25 https://www.floodhydrostats.com/about daily 0.75 2023-09-11 https://www.floodhydrostats.com/howitworks daily 0.75 2023-08-14 https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/1498155197440-EKEOG6SR4630GMKV3UAT/formula1.PNG How it works (FEH volumes 2&3) https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/c113beb4-f986-4e35-a54f-2bc8469a8c9d/CopulaProcessSim.png How it works - Make it stand out Figure 8: Steps in the Gaussian copula modelling of bivariate GPD. Blue dots are simulated. The black dots are the observed temporally independent concurrent extremes (above 95th percentile). In the case of the probabilities the black dots are calculated using the GPD models which are fitted to the extracted POT for each variable. The central plot is the Gaussian copula with a Pearson correlation coefficient of 0.79. https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/1607618330345-JA4E4Z25GW0713SV8LDB/GEVDailyRain.jpeg How it works Figure 3: Comparison of sample size for the GEV distribution of daily AMAX rain https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/1607616463186-KB63JYCWWI82W6VDJE4U/CDFvPDF.jpeg How it works Figure 2: Comparison of CDF and PDF https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/1607685706481-8OZQBMZKPH9NGLHLDUWI/AMplot.jpeg How it works Figure 4: Bar plot of an annual maximum flow sample https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/1607766542194-INYXR8K0G4I5H4VGV7ON/BootstrappedEstimates2.jpeg How it works Figure 6: Histogram of 10,000 bootstrapped 100-year flow estimates at Kingston, with 68% intervals in red. https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/08da76cc-abf0-4582-8d47-5826c422de07/BivariateSimPlot.png How it works - Make it stand out Figure 7: Bivariate simulation of extremes (10,000) using a Gaussian copula (using daily mean flows) https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/1607616396255-U1VIU4VU93TTLHRTZH6T/HeightsHist.jpeg How it works Figure 1: Comparison of sample size for a normal distribution of adult male heights. https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/1607685760940-2B4ESZWM1IZY13F6OJ1Y/POTPlot.jpeg How it works Figure 5: Peaks (red circles) above a threshold (blue line). The green line is the daily mean flow (separating independent peaks). Arguably, the latter could be lowered in this case. https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/ba88f422-bcd8-4296-b286-5cb590fcd872/JointExceedance50.png How it works - Make it stand out Figure 9: Similar to figure 7 except 50,000 events have been simulated and a subset of 50-year joint exceedance events are highlighted in green, along with some events which make reasonable candidates for event modelling purposes (red dots). https://www.floodhydrostats.com/implementation daily 0.75 2025-11-17 https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/1ee6ad94-a03f-4e1d-8f68-4900409f942e/AM69041.png Implementation - Make it stand out Figure 1: Annual maximum peak flows on the River Tame at Broomstairs https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/cc6cbdd4-c039-4596-8662-19d93308941f/FrequencyCurve.png Implementation - Make it stand out Figure 2: Flood frequency curve for the River Tame at Broomstairs https://www.floodhydrostats.com/ukfe-package-feh-quick-guide daily 0.75 2025-11-17 https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/a5ddfe6e-9759-446b-ba53-0db593df8ccb/ResultsOutputQuickResults.jpg UKFE: FEH Quick Guide - Make it stand out Output from QuickResults function https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/d5c8c94a-fd23-466b-900d-2bdf8b79ef67/FunctionsTable.png UKFE: FEH Quick Guide - Make it stand out Table 1: Key UKFE functions for implementing the FEH methods https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/50020e94-329e-4d2a-a0b2-a9f5c21be643/PoolCurve55002_UG.jpg UKFE: FEH Quick Guide - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/a46c0282-a94c-492c-bc83-af42bc491853/Results55002Gauged.jpg UKFE: FEH Quick Guide - Make it stand out Results output for the pooled estimate for site 55002 https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/08f9f405-ea1e-4039-90e9-34f5f27e169c/PoolCurve55002.jpg UKFE: FEH Quick Guide - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/fbf633d8-ff53-4aac-81a2-6a19551bd084/ReFHRandomGamma55002_UG.jpg UKFE: FEH Quick Guide - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/fc151dc7-5bcb-4614-baad-9a1999719f30/AMPlot_WyeAtBelmont.jpg UKFE: FEH Quick Guide - Make it stand out Figure 5: AMAX histogram and bar plot for site 55002 https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/8f2475a9-e7c3-4262-a47b-4548aaa00eef/POTplot.jpeg UKFE: FEH Quick Guide - Make it stand out Figure 7: Peaks over threshold for the Thames at Kingson (2000 to 2015). The blue line is the threshold and the green is the mean flow line. Independent peaks are chosen above the threshold. If peaks are separated by a drop below the green line, they are considered independent. https://images.squarespace-cdn.com/content/v1/593bd03637c58172ed38baec/76462f4a-1ea1-4b65-851a-5bc9d69559cd/ReFHDefault55002_UG.jpg UKFE: FEH Quick Guide - Make it stand out Figure 3: Default ReFH output for catchment 55002