HEC-ResSim Tutorials and Guides How-to articles Current: HOW TO Model Induced Surcharge Operations in a Daily Timestep Model PDF Download PDF Download page HOW TO Model Induced Surcharge Operations in a Daily Timestep Model. Current page All pages HOW TO Model Induced Surcharge Operations in a Daily Timestep Model ScenarioYou have a model that runs on a daily time step and you want to simulate an induced surcharge operation.BackgroundThe ResSim Induced Surcharge rule is designed to work for flood modeling, and requires a short timestep or adjustments to work The Process?? ×