This tutorial outlines the method for creating a Project with Custom Storm Event. The procedure for creating a Custom Storm Event project is the same as developing a HEC-1 project using the S-Graph. The only difference is that the rainfall uses a custom distribution and the rainfall event is not necessarily associated with any return period. The procedure allows the user to enter the Rainfall Distribution to use in the analysis as well as the total storm depth. The procedure applies only to the S-Graph and not to the Clark UH Method.