This report reviews tasks accomplished during Phase I of the project and describes tasks accomplished during Phase II. Phase II tasks include: (1) Additional development of the HEC-Prescriptive Reservoir Model (HEC-PRM), (2) Development of new and enhancement of existing utility programs related to HEC- PRM, (3) Transfer of developed technology to the Missouri River Division, and (4) Preliminary review of procedures for developing system operating rules from HEC-PRM results. The model uses network-flow programming to allocate optimally the system water. In Phase II, the modeled system was extended to include navigation on the Mississippi River by including a node at St. Louis. The applications are performed using the best-currently-available estimates of flow data and penalty functions, both of which must be considered to be preliminary and are basically those used in the Phase I analysis. This report includes draft documentation which describes the current version of the program and selectively displays example input and output. Prescriptive Reservoir Model, Network Flow, Linear Programming, Penalty Functions, Depletions, Reservoir Releases, Reservoir Storage, Objective Function, Flood Damage, Navigation, Recreation, Hydropower, Water Supply, Fish and Wildlife.