The article presents a method to predict the size of floods at a specific location using only flow data. By analyzing the flow data from a site, researchers can estimate the peak flow of a flood with a certain likelihood of occurring. This method can be applied to both sites with flow data available and those without, by using data from nearby sites. The researchers developed a way to create a standard flood pattern based on the flow data, which can then be adjusted to match the expected peak flow at a specific location. This approach allows for the estimation of flood volume as well.