The ESP product starts with trace plots, each from a particular year. In this example, each trace represents some type of historic meteorological condition. The spaghetti hydrograph plots show the overall distribution of simulated streamflows. For specific peaks such as the 1991 orange one shown here, each is tied to an individual year. Another example is the light green peak that is tied to 1974. But since the majority of simulations are lower than either of these peak flows, there is a greater chance that the future flow will be lower.