Once the basic model structure has been developed and calibrated using the Simulation controller, the operating policies can then be implemented using rules. The rules will compute the reservoir outflows and diversions to water users based on the state of the system and the operating policies. Described in this section is an overview of configuring the rulebased simulation model followed by a description of each USACE‑SWD policy: surcharge, regulation discharge, flood control, low-flow releases, reservoir diversions, hydropower releases, and fish releases. Described for each policy are the additional method selections and data needs. Then the implementation in RPL is described along with algorithm itself.